RICHARD PAUL GANGLOFF
Born:
Pittsburgh, Pennsylvania
August, 1948
Education:
B.S. in Metallurgy and Materials Science
Lehigh University, 1970
M.S. in Metallurgy and Materials Science
Lehigh University, 1972
Ph.D. in Metallurgy and Materials Science
Lehigh University, 1974
Professional Experience:
Department of Metallurgy and Materials Science, Lehigh University,
Bethlehem, PA
Graduate Instructor, 1970-1972
Graduate Research Assistant, 1972-1974
Corporate Research and Development Center, General Electric Co.,
Schenectady, NY
Metallurgist, 1974-1980
Corporate Research Science Laboratories, Exxon Research and Engineering,
Annandale, NJ
Staff Metallurgist, 1980-1982
Senior Staff Metallurgist, 1982-1986
School of Engineering and Applied Science, University of Virginia,
Charlottesville, VA
Associate Professor of Materials Science, 1986-1990
Professor of Materials Science and Engineering, 1990-present
Ferman W. Perry Professor of Engineering, 2005-present
Chair, Department of Materials Science and Engineering, 2003-2008
Director, NASA-UVa Light Aerospace Alloy and Structures Technology
Program, 1987-2000
Visiting Distinguished Professor, Center for Aircraft Structural Life
Extension, Department of Engineering Mechanics, United States Air Force
Academy, 2009; 2011
Visiting Research Affiliate, National Institute of Standards and Technology,
Boulder Laboratories, 2009
Honors and Awards:
BS Degree with Highest Honors
Member, Tau Beta Pi and Sigma Xi
Undergraduate Research Paper Award (National), TMS-AIME; 1969
Henry Marion Howe Medal, ASM International; 1986
Award of Merit, ASTM, 1991
Fellow of the Society, ASTM, 1991
Fellow of the Society, ASM International; 1996
ASTM E08 Fatigue Lecturer; 1996
Albert Sauveur Award, Philadelphia Chapter of ASM International; 2013
Professional Development:
Management Development Program, Harvard School of Higher Education,
2004
Professional Societies and Committees:
ASM International
Chairman, Metals Handbook Committee on Environmental Effects in
Fatigue; 1984
Organizer, International Conference on Environmental Cracking; 1988
Member, International Materials Review Committee; 1985-1992
Member, Awards Policy Committee; 1997-2001
Member, Technical Books Committee; 1998-2001
The Minerals, Metals & Materials Society of AIME
Chairman, Hudson-Mohawk Chapter; 1978-1980
Member, Environmental Effects Committee; 1983-1989
Organizer, International Conference on Crack Chemistry, 1983
Member, Board of Review for Metallurgical Transactions, 1983-1993
ASTM Committee E08 on Fatigue & Fracture
Chairman, Task Group on Elevated Temperature Cracking; 1982-83
Chairman, Task Group on Small Cracks; 1983-85
Chairman, Subcommittee on Subcritical Crack Growth; 1985-91
Member, Executive Committee on Fracture Mechanics; 1985-92
Organizer, 3 International Conferences on Fracture; 1984, 1987, 1995
National Association of Corrosion Engineers
Board of Editors, Corrosion Journal; 1993-1996
University
Chair, Virginia Polytechnic Institute and State
Department Program Evaluation Committee; 2007.
University
MSE
Member, Virginia Polytechnic Institute and State University MSE
Department Advisory Committee; 2004-2008.
Chairman, Gordon Research Conference on Physical Metallurgy; 1994
Board of Editors, Fatigue and Fracture of Engineering Materials and
Structures; 1996-2011
Board of Editors, Engineering Fracture Mechanics; 1996-2012
Primary Research Achievements
The overarching achievement of the research cited in the ensuing lists of
publications and dissertations/theses consistently centers on precision
measurements of the kinetics of environment-assisted crack growth in
complex high performance metallic alloys, supplemented by electron-beam
characterization of the underling damage mechanism characteristics. These
observations are explained by interdisciplinary integration of crack tip
micromechanics, H trapping, and occluded crack electrochemistry. The intent
is to: (a) develop quantitative data bases and fundamental models of
cracking properties through crack tip damage modeling, and (b) incorporate
this understanding to manage environmental cracking through alloy
development, chemical inhibition, and cracking-life prediction.
Specific
achievements are as follows.
Lehigh University
Produced the definitive characterization of the interactive effects of
temperature and H2 pressure on the kinetics of subcritical hydrogen
cracking in ultra-high strength steel, and assessed rate limiting
processes.
General Electric Corporate R&D Center
Lead laboratory characterizations of stress corrosion cracking and solid
metal embrittlement in Zr-barrier fuel cladding at the forefront of
commercial nuclear reactor performance.
Developed a quantitative small-fatigue crack test method and fracture
mechanics analysis to enable powder metallurgy Ni superalloy
development for jet engine disk application.
Exxon Corporate Research Science Laboratories
With others, lead international focus on the small crack problem in
fatigue;
Proposed (electro)chemical similitude as a key factor in
environmental cracking life prediction; Provided the first-definitive
demonstration of the role of small crack geometry in affecting
hydrogen-environment assisted subcritical crack growth.
Established the inhibiting effect of unsaturated hydrocarbon molecules
on gaseous hydrogen embrittlement of steel, relevant to next generation
processing of polyethylene in high pressure H2.
University of Virginia
Established understanding of the temperature dependence of aluminum
alloy fracture toughness, based on validated crack tip micromechanical
modeling, and the fundamental roles of intravoid strain localization and
microstructure-scale constraint.
Quantified the kinetics of environmental fatigue crack growth in
aerospace aluminum alloys, including effects of loading frequency,
temperature, gaseous environment composition/partial pressure, and
ionic inhibition for chloride solutions; Modeled each effect based on
crack tip hydrogen embrittlement governed by processes such as
molecular diffusion for water vapor, crack tip process zone H diffusion
for chloride solution, and passive film competition with H uptake for ioninhibited chloride solution.
Provided the most detailed quantification available for the
crystallographic orientation of micron-scale facets on Al alloy fatigue
crack surfaces through combined EBSD and SEM-stereology;
Demonstrated crack tip dislocation cell structure, formed by dynamic
recovery and acting as a preferred path for H trapping and fatiguedamage accumulation through combined FIB, TEM and EBSD
measurements at the sub-micron scale.
Quantified fatigue crack formation and microstructure-scale growth
associated with constituent particles and corrosion topography in
aerospace alloys; Resulting multi-dimensional growth rate data provide
a gold standard for assessing competing models of fatigue propagation.
Advanced the capability for multi-scale cracking prediction based on
mechanistic understanding of hydrogen embrittlement in ultra-high
strength steels and nickel-based superalloys through integration of H
trapping with models of threshold stress intensity and H diffusion
limited crack growth rate.
Formalized a fracture mechanics based life prediction code, SCCrack, for
probabilistic simulation of component stress corrosion cracking and
hydrogen embrittlement; Developed an accelerated laboratory test
method to provide quantitative cracking data inputs to this code.
Identified the dominant roles of slow-rising stress intensity and
temperature on precharged hydrogen cracking in moderate strength CrMo steels in petrochemical service; Behavior was correlated with crack
tip H concentration, which provided a similitude concept for pressure
vessel fitness-for-service and minimum pressurization temperature
modeling.
Produced detailed review papers centered on environmental fatigue and
hydrogen cracking, edited 6 books in these fields, founded a major
international conference on Environment Induced Cracking of Metals,
and lead a Gordon Research Conference on Time-Dependent Material
Degradation.
Several PhD students are now leading researchers in the fields of
environmental fatigue and fracture.
Publications
Archival peer-reviewed papers
103
Conference proceedings
26
Books edited
Google Scholar
h-index
Total citations
6
26
1878
17 since 2009
819 since 2009
Published Reports
General Electric
12
University of Virginia
45
Technical Presentations
Exxon
14
Invited
Contributed
Advised
132
86
PhD Dissertations
18
MS Theses
11
Consultancies
28
Important Publications
J.T. Burns, J.M. Larsen and R.P. Gangloff, “Effect of Initiation Feature on
Microstructure-scale Fatigue Crack Propagation in Al-Zn-Mg-Cu”,
International Journal of Fatigue, Vol. 42, pp. 104-121 (2012). (Recognized
as 1 of top 25 papers published in this journal in 2012.)
Yunjo Ro, S.R. Agnew and R.P. Gangloff, “Effect of Environment on Fatigue
Crack Wake Dislocation Structure in Al-Cu-Mg”, Metallurgical and Materials
Transactions, A, Vol. 43A, pp. 2275-2292 (2012).
J.S. Warner and R.P. Gangloff, “Molybdate Inhibition of Corrosion Fatigue
Crack Propagation in Precipitation Hardened Al-Cu-Li”, Corrosion Science,
Vol. 62, pp. 11-21 (2012).
Uday Komaragiri, S.R. Agnew, R.P. Gangloff and M.R. Begley, “The Role of
Macroscopic Hardening and Individual Length Scales on Crack Tip Stress
Elevation from Phenomenological Strain Gradient Plasticity”, Journal of
Mechanics and Physics of Solids, vol. 56, pp. 3527-3540 (2008).
Yongwon Lee and R.P. Gangloff, “Measurement and Modeling of Hydrogen
Environment Assisted Cracking of Ultra-High Strength Steel”, Metallurgical
and Materials Transactions, A, vol. 38, pp. 2174-2190 (2007).
D. Li, R.P. Gangloff, and J.R. Scully, “Hydrogen Trap States in UltrahighStrength AerMet® 100 Steel”, Metallurgical and Materials Transactions, A,
Vol. 35A, pp. 849-864 (2004).
B.P. Somerday, L.M. Young and R.P. Gangloff, “Crack Tip Mechanics Effects
on Environment-Assisted Cracking of Beta-Titanium Alloys in Aqueous
NaCl”, Fatigue and Fracture of Engineering Materials and Structures, Vol.
23, pp. 39-58 (2000).
M.J. Haynes and R.P. Gangloff, "Temperature-Dependent Void-Sheet
Fracture in Al-Cu-Mg-Ag", Metallurgical and Materials Transactions, A,
Vol. 29A, pp. 1599-1613 (1998).
D.C. Slavik and R.P. Gangloff, "Environment and Microstructure Effects on
Fatigue Crack Facet Orientation in an Al-Li-Cu-Zr Alloy", Acta Metallurgica
et Materialia, Vol. 44, pp. 3515-3534 (1996).
R.S. Piascik and R.P. Gangloff, "Environmental Fatigue of an Al-Li-Cu Alloy:
Part I - Intrinsic Crack Propagation Kinetics in Hydrogenous Environments",
Metallurgical Transactions, A, Vol. 22A, pp. 2415-2428 (1991).
R.P. Gangloff, "Crack Size Effects on the Chemical Driving Force for
Aqueous Corrosion Fatigue", Metallurgical Transactions, A, Vol. 16A, pp.
953-969 (1985).
Henry Marion Howe Medal
Paper
R.P. Gangloff and R.P. Wei, "Gaseous Hydrogen Embrittlement of High
Strength Steels", Metallurgical Transactions, A, Vol. 8A, pp. 1043-1053
(1977).
Important Review Papers
R.P. Gangloff, “Hydrogen Assisted Cracking of High Strength Alloys”, in
Comprehensive Structural Integrity, I. Milne, R.O. Ritchie and B. Karihaloo,
Editors-in-Chief, J. Petit and P. Scott, Volume Editors, Vol. 6, Elsevier
Science, New York, NY, pp. 31-101 (2003).
R.P. Gangloff, D.C. Slavik, R.S. Piascik and R.H. Van Stone, "Direct Current
Electrical Potential Measurement of the Growth of Small Fatigue Cracks", in
Small Crack Test Methods, ASTM STP 1149, J.M. Larsen and J.E. Allison,
eds., ASTM, Philadelphia, PA, pp. 116-168 (1992).
R.P. Gangloff, "Corrosion Fatigue Crack Propagation in Metals", in
Environment Induced Cracking of Metals, R.P. Gangloff and M.B. Ives, eds.,
NACE, Houston, TX, pp. 55-109 (1990).
Important Book
Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: The
Problem, Its Characterization, and Effects on Particular Alloy Classes,
Volumes 1 and 2, eds., R.P. Gangloff and B.P. Somerday, Woodhead
Publishing Limited, Cambridge, UK, 1340 pages (2012).
Important Presentations
“Hydrogen Embrittlement Matters”, Liberty Bell Chapter, ASM International
(2014)
Albert Sauveur Award Lecture
“Environmental Effects on Intrinsic Fatigue Crack Propagation in AL Alloys”,
R.O. Ritchie Honorary Symposium, TMS Annual Meeting, Orlando, FL
(2012).
Keynote
“Science-Based Prognosis to Manage Structural Alloy Performance in
Hydrogen”, Hydrogen Effects on Materials, Jackson Lake, WY (2008).
Plenary
“Modeling Environment Sensitive Fatigue Crack Propagation at Low Growth
Rates”, 4th International Conference on Very High Cycle Fatigue, TMS, Ann
Arbor, MI (2007).
Keynote
“Modeling Hydrogen Assisted Crack Propagation in Complex Alloys”, 10th
International Conference on Mechanical Behavior of Materials, Busan, Korea
(2007).
Keynote
“Water Vapor Effects on Fatigue Crack Growth Kinetics for Al-Cu-Mg/Li”,
A.J. McEvily Honorary Symposium, TMS Annual Meeting, San Antonio, TX
(2006).
Invited
“Critical Issue in Hydrogen Assisted Cracking of Structural Alloys”, 2nd
International Conference on Environment Induced Cracking in Metals,
Banff, Canada (2004).
Keynote
“Crack Tip Processes in Environmental Cracking”, Gordon Research
Conference, New London, NH (2000).
Invited
“Environmental Fatigue”, ASTM E08 Fatigue Lecture, Orlando, FL (1996).
Award
“Micromechanical and Chemical Processes at the Environmental Crack Tip”,
Gordon Research Conference, Plymouth, NH (1992).
Invited
Most Important Consultancies
Lawrence Livermore National Laboratory
(1984)
Member of the 1st
external scientific review team charged to assess federal research and
engineering aimed at guaranteeing ultra-long term storage of nuclear
waste.
Chevron Research and Technology Company
(1995-97)
Critically
assessed the state-of-the art in guaranteeing the fitness-for-service of
welded steel piping and pressure vessels in wet H2S service in
petrochemical refinery operations. Focus was on the causes of a major
failure of an MEA-adsorber vessel in the Union Oil Company Refinery in
Lemont, IL. The results of this work are captured in a major-final report.
Rogers, Joseph, O’Donnell & Quinn
(1999-2001)
Conducted a
detailed analysis of the causes of prestressing-steel wire fractures which
compromised the structural integrity of the Hayden-Rhodes Aqueduct.
The technical case strongly impacted the outcome of litigation.
International Consortium of 14 Petrochemical and Steel Companies
(2000-2006)
Led a Joint Industry Project to characterize the interactive
effects of temper embrittlement and hydrogen embrittlement on the
structural integrity of legacy Cr-Mo steel thick-wall pressure vessels
during start-up and shutdown.
Work included development of a
quantitative fracture mechanics measurement procedure, its application in
two Japanese and one French laboratory, data analysis, and a final report.
S&K Technologies and the U.S. Air Force
(2002-2005)
Participated
as a member of the team charged with developing quantitative methods to
predict the impact of base corrosion on fatigue during aircraft flight. My
focus was on development of an experimental method to measure the
effect of precorrosion topography on fatigue life for Al-Zn-Mg-Cu alloys
used in wing structures.
American Petroleum Institute
(2008-present)
Leading two projects
aimed at guaranteeing the safe operation of legacy Cr-Mo and modern CrMo-V steel thick-wall pressure vessels during near-ambient temperature
start-up and shutdown. The first project developed a quantitative model
to predict minimum pressurization temperature based on a new crack tip H
concentration similitude parameter. The second project is extending this
work to V-modified Cr-Mo steel; including experimental planning and
analysis of data provided by commercial laboratories.
Publications:
S. Pillot, K.A. Nibur and R.P. Gangloff, “Hydrogen Cracking of Cr-Mo-V
Steel from High Pressure H2 Service”, Proceedings, 2nd International
Conference on Metals and Hydrogen”, OCAS, Ghent, Belgium, in press
(2014).
R.P. Gangloff, H. Ha, J.T. Burns and J.R. Scully, “Measurement and Modeling
of Hydrogen Environment Assisted Cracking in Monel K-500”, Metallurgical
and Materials Transactions, A, in press (2014).
Abdullah Al-Rumaih and R.P. Gangloff, “Measurement and Modeling of
Temperature Dependent Internal Hydrogen Assisted Cracking in Cr-Mo
Steel”, in Hydrogen-Materials Interactions, B.P. Somerday and P. Sofronis
eds., ASME, New York, NY, pp. 33-48 (2014).
C.B. Crane and R.P. Gangloff, “Dissolution and Hydrogen Diffusion Control
of IGSCC in Sensitized Al-Mg. Alloys”, in Hydrogen-Materials Interactions,
B.P. Somerday and P. Sofronis eds., ASME, New York, NY, pp. 439-449
(2014).
R.P. Gangloff, “Fracture Mechanics Prediction of Component SCC Using
Accelerated Laboratory Testing”, Department of Defense 2013 Corrosion
Conference, NACE International, Houston, TX, in press (2013).
C.B. Crane and R.P. Gangloff, “The Effect of Applied Polarization on Stress
Corrosion Cracking in Sensitized 5083”, Department of Defense 2013
Corrosion Conference, NACE International, Houston, TX, in press (2013).
J.T. Burns, V.K. Gupta, S.R. Agnew and R.P. Gangloff, “Effect of Low
Temperature on Fatigue Crack Formation and Microstructure-Scale
Propagation in Legacy and Modern Al-Zn-Mg-Cu Alloys”, International
Journal of Fatigue, vol. 55, pp. 268-275 (2013).
Jiahe Ai, Hung Ha, R.P. Gangloff and J.R. Scully, “Hydrogen Diffusion,
Trapping and Thermal Desorption Energies for Precipitation Hardened NiCu-Al Alloy: UNS N05500 (Monel Alloy K-500)”, Acta Metallurgica et
Materialia, vol. 61, pp. 3186-3199 (2013).
J.T. Burns and R.P. Gangloff, “Effect of Low Temperature on Fatigue Crack
Formation and Microstructure-scale Growth from Corrosion Damage in AlZn-Mg-Cu”, Metallurgical and Materials Transactions A, Vol. 44, pp. 20832105 (2013).
Yunjo Ro, S.R. Agnew and R.P. Gangloff, “Effect of Environment on Fatigue
Crack Wake Dislocation Structure in Al-Cu-Mg”, Metallurgical and Materials
Transactions, A, Vol. 43A, pp. 2275-2292 (2012).
G.L. Pioszak, Yongwon Lee, W.M. Garrison, and R.P. Gangloff, “Effect of
Liquid Nitrogen Chill on SCC of AerMet® 100 Ultra-High Strength Steel”,
Department of Defense 2011 Corrosion Conference, CorrDefense, NACE,
Houston, TX, www.corrdefense.org (2012).
C.B. Crane and R.P. Gangloff, “Stress Corrosion Cracking of Low
Temperature Sensitized AA5083”, Department of Defense 2011 Corrosion
Conference, CorrDefense, NACE, Houston, TX, www.corrdefense.org
(2012).
J.S. Warner and R.P. Gangloff, “Molybdate Inhibition of Fatigue Crack
Propagation in Precipitation Hardened Al-Cu-Li Under Full Immersion
Exposure”, Department of Defense 2011 Corrosion Conference,
CorrDefense, NACE, Houston, TX, www.corrdefense.org (2012).
J.T. Burns, R.W. Bush and R.P. Gangloff, “Effect of Environment on
Corrosion Induced Fatigue Crack Formation and Early Propagation in
Aluminum Alloy 7075-T651”, Department of Defense 2011 Corrosion
Conference, CorrDefense, NACE, Houston, TX, www.corrdefense.org
(2012).
J.S. Warner and R.P. Gangloff, “Molybdate Inhibition of Corrosion Fatigue
Crack Propagation in Precipitation Hardened Al-Cu-Li”, Corrosion Science,
Vol. 62, pp. 11-21 (2012).
J.S. Warner and R.P. Gangloff, “Alloy Induced Inhibition of Fatigue Crack
Growth in Age-hardenable Al-Cu Alloys”, International Journal of Fatigue,
Vol. 42, pp. 35-44 (2012).
V.K. Gupta, R.P. Gangloff and S.R. Agnew, “Diffraction Characterization of
Microstructure Scale Fatigue Crack Growth in a Modern Al-Zn-Mg-Cu
Alloy”, International Journal of Fatigue, Vol. 42, pp. 131-146 (2012).
J.T. Burns, J.M. Larsen and R.P. Gangloff, “Effect of Initiation Feature on
Microstructure-scale Fatigue Crack Propagation in Al-Zn-Mg-Cu”,
International Journal of Fatigue, Vol. 42, pp. 104-121 (2012). (Recognized
as 1 of top 25 papers published in this journal in 2012.)
J.T. Burns, J.M. Larsen and R.P. Gangloff, “Driving Forces for Localized
Corrosion-to-Fatigue Crack Transition in Al-Zn-Mg-Cu”, Fatigue and
Fracture of Engineering Materials and Structures, Vol. 34, pp. 745-773
(2011).
J.T. Burns and R.P. Gangloff, “Scientific Advances Enabling Next Generation
Management of Corrosion Induced Fatigue”, Procedia Engineering, Vol. 10,
pp. 362-369 (2011).
J.T. Burns, Sangshik Kim and R.P. Gangloff, “Effect of Corrosion Severity on
Fatigue Evolution in Al-Zn-Mg-Cu”, Corrosion Science, Vol. 52 pp. 498508 (2010).
J.S. Warner, G.H. Bray and R.P. Gangloff, “Environment-Enhanced Fatigue
Crack Propagation and Inhibition in Aluminum Alloys under Full Immersion
and Atmospheric Exposure”, Department of Defense 2009 Corrosion
Conference, CorrDefense, NACE, Houston, TX, www.corrdefense.org
(2009).
R.P. Gangloff, “Science-Based Prognosis to Manage Structural Alloy
Performance in Hydrogen”, in Hydrogen Effects on Materials, B.P.
Somerday, P. Sofronis, and R.H. Jones, eds., ASM International, Materials
Park, OH, pp. 1-21 (2009).
J.S. Warner, Sangshik Kim and R.P. Gangloff, “Molybdate Inhibition of
Environmental Fatigue Crack Propagation in Al-Zn-Mg-Cu”, International
Journal of Fatigue, Vol. 31, pp. 1952-1965 (2009).
Thorsten Michler, Yongwon Lee, R.P. Gangloff, and Joerg Naumann,
“Influence of Macro Segregation on Hydrogen Environment Embrittlement
of SUS 316L Stainless Steel”, International Journal of Hydrogen Energy, Vol.
34, pp. 3201-3209 (2009).
Sangshik Kim, J.T. Burns, and R.P. Gangloff, “Fatigue Crack Formation and
Growth from Localized Corrosion in Al-Zn-Mg-Cu”, Journal of Engineering
Fracture Mechanics, Vol. 76, pp. 651-667 (2009).
Uday Komaragiri, S.R. Agnew, R.P. Gangloff and M.R. Begley, “The Role of
Macroscopic Hardening and Individual Length Scales on Crack Tip Stress
Elevation from Phenomenological Strain Gradient Plasticity”, Journal of
Mechanics and Physics of Solids, vol. 56, pp. 3527-3540 (2008).
Yunjo Ro, S.R. Agnew and R.P. Gangloff, “Environmental Fatigue Crack
Surface Crystallography for Al-Zn-Cu-Mg-Mn/Zr”, Metallurgical and
Materials Transactions, A, vol. 39A, pp. 1449-1465 (2008).
Yunjo Ro, S.R. Agnew and R.P. Gangloff, “Fatigue Crack Surface
Crystallography of Precipitation Hardened Al-Cu-Mg/Li”, Metallurgical and
Materials Transactions, A, vol. 38, pp. 3042-3062 (2007).
R.P. Gangloff, “Critical Issues in Hydrogen Assisted Cracking of Structural
Alloys”, in Environment Induced Cracking of Materials (EICM-2), Sergei
Shipilov, R.H. Jones, J.-M Olive, and R.B. Rebak, eds., Elsevier Science,
Oxford, UK, pp. 141-166 (2007).
Yongwon Lee and R.P. Gangloff, “Measurement and Modeling of Hydrogen
Environment Assisted Cracking of Ultra-High Strength Steel”, Metallurgical
and Materials Transactions, A, vol. 38, pp. 2174-2190 (2007).
Yunjo Ro, S.R. Agnew, G.H. Bray and R.P. Gangloff, “Environment Exposure
Dependent Fatigue Crack Growth Kinetics for Al-Cu-Mg/Li”, Materials
Science and Engineering, vol. 468-470, pp. 88-97 (2007).
R.P. Gangloff, “Prognosis of Ferrous Alloy Performance in H2 Service”, in
Proceedings International Hydrogen Energy Development Forum, Yukitaka
Murakami, ed., Research Center for Hydrogen Industrial Use and Storage,
Fukuoka, Japan, pp. 69-82 (2007).
Y.J. Ro, S.R. Agnew, and R.P. Gangloff, “Environmental Exposure
Dependence of Low Growth Rate Fatigue Crack Damage in Al-Cu-Li/Mg
Alloys”, in 4th International Conference on Very High Cycle Fatigue, J.E.
Allison, J.W. Jones, J.M. Larsen and R.O. Ritchie, eds., TMS-AIME,
Warrendale, PA, pp. 409-420 (2007).
J.S. Warner, Sangshik Kim, and R.P. Gangloff, “Ionic Inhibition of
Environmental Fatigue Crack Growth in 7075-T6”, Materials Science Forum,
Vol. 345-346, pp. 989-994 (2007).
S.S. Kim, J. Burns, and R.P. Gangloff, “Fracture Mechanics Modeling of
Fatigue Life for Precorroded 7075-T6511 Aluminum Alloy”, in Fatigue 06,
W. S. Johnson, ed., Elsevier Ltd., London, UK (CD), Paper FT-405, 11 pages
(2006).
Y.J. Ro, S.R. Agnew and R.P. Gangloff, “Fatigue Crack Surface
Crystallography of Precipitation Hardened Aluminum Alloys”, in Fatigue 06,
W. S. Johnson, ed., Elsevier Ltd., London, UK (CD), Paper FT-404, 10 pages
(2006).
Y.J. Ro, M.R. Begley, R.P. Gangloff and S.R. Agnew, “Effect of Aging on
Scale-Dependent Plasticity in Aluminum Alloy 2024 and Implications for
Crack Tip Damage”, Materials Science and Engineering, A, Vol. 435-436,
pp. 333-334 (2006).
J.R. Scully, B.A. Kehler, Y. Lee and R.P. Gangloff, “Strategies for Mitigation
of Hydrogen Environment Assisted Cracking of High Strength Steels”, TriService Corrosion Conference, NACE, Houston, TX, Paper No. 06T019
(2005).
M.R. Begley, S.R. Agnew, U. Komaragiri, and R.P. Gangloff, “Hydrogen
Damage in the Crack Tip Environment”, in Proceedings, 11th International
Conference on Fracture, Paper 5505, A. Carpinteri et al., eds., Politecnico
de Torino, Turin, Italy, 6 pages (2005).
A.M. Al-Rumaih and R.P. Gangloff, “New Fracture Mechanics Approach to
Characterize Internal Hydrogen Embrittlement of Steel for Fitness-forService Modeling”, in Proceedings, 11th International Conference on
Fracture, Paper 5044, A. Carpinteri et al., eds., Politecnico de Torino,
Turin, Italy, 6 pages (2005).
S.R. Agnew, Y.J. Ro, M.R. Begley, and R.P. Gangloff, “Fatigue Crack Tip
Damage-Based Models in Structural Prognosis”, in Proceedings, 11th
International Conference on Fracture, Paper 5097, A. Carpinteri et al., eds.,
Politecnico de Torino, Turin, Italy, 6 pages (2005).
M.P. Ciccone, R.P. Gangloff, and R.G. Kelly, “Test Environment Selection for
Corrosion Fatigue Testing of AA7075-T6”, Corrosion, Vol. 61, pp. 571-578
(2005).
D. Li, J. Burns, R. Bush, M. Garratt, A. Hinkle, T. Mills, C. Marks, J. Moran, J.
Scully and R.P. Gangloff, “Characterization of Corrosion-Fatigue Interaction
for Aluminum Alloy Substitution”, in Proceedings of the 8th Joint
NASA/FAA/DoD Conference on Aging Aircraft, R. D. Young, Editor, web site
publication: www. JCAA.US/AA_Conference2005 (2005).
R.P. Gangloff, "Corrosion Fatigue Cracking", in Corrosion Tests and
Standards: Application and Interpretation, 2nd Edition, R. Baboian, ed.,
ASTM International, West Conshohocken, PA, pp. 302-321 (2005).
Y.J. Ro, S.R. Agnew and R.P. Gangloff, “Uncertainty in the Determination of
Fatigue Crack Facet Crystallography”, Scripta Materialia, Vol. 52, pp. 531536 (2005).
J.R. Scully, H. Dogan, D. Li, and R.P. Gangloff, “Controlling Hydrogen
Embrittlement in Ultra-high Strength Steels”, in Paper No. 04563,
CORROSION/2004, NACE, Houston, TX (2004).
D. Li, R.P. Gangloff, and J.R. Scully, “Hydrogen Trap States in UltrahighStrength AerMet® 100 Steel”, Metallurgical and Materials Transactions, A,
Vol. 35A, pp. 849-864 (2004).
R.P. Gangloff, “Hydrogen Assisted Cracking of High Strength Alloys”, in
Comprehensive Structural Integrity, I. Milne, R.O. Ritchie and B. Karihaloo,
Editors-in-Chief, J. Petit and P. Scott, Volume Editors, Vol. 6, Elsevier
Science, New York, NY, pp. 31-101 (2003).
R.P. Gangloff, “Diffusion Control of Hydrogen Environment Embrittlement
in High Strength Alloys”, in Hydrogen Effects on Material Behavior and
Corrosion Deformation Interactions, N.R. Moody, A.W. Thompson, R.E.
Ricker, G.S. Was and R.H. Jones, eds., The Minerals, Metals & Materials
Society, Warrendale, PA, pp. 477-497 (2003).
R.L.S. Thomas, J.R. Scully and R.P. Gangloff, “Internal Hydrogen
Embrittlement of Ultrahigh-Strength AerMet®100 Steel”, Metallurgical and
Materials Transactions, A, Vol. 34A, pp. 327-344 (2003).
R.L.S. Thomas, D. Li, R.P. Gangloff and J.R. Scully, “Trap-Governed
Hydrogen Diffusivity and Uptake Capacity in Ultrahigh-Strength
AerMet®100 Steel”, Metallurgical and Materials Transactions, A, Vol. 33A,
pp. 1991-2004 (2002).
R.P. Gangloff, “Environment Sensitive Fatigue Crack Tip Processes and
Propagation in Aerospace Aluminum Alloys”, in Fatigue ’02, Anders Blom,
Editor, Engineering Materials Advisory Services, West Midlands, UK, pp.
3401-3433 (2002).
G.H. Bray, M. Glazov, R.J. Rioja, D. Li, and R.P. Gangloff, “Effect of Artificial
Aging on the Fatigue Crack Propagation Resistance of 2000 Series
Aluminum Alloys”, International Journal of Fatigue, Vol. 23, pp. S265-S276
(2002).
L.M. Young and R.P. Gangloff, “S-Phase Effect On Environmental Cracking
in AA7050”, in Advances in the Metallurgy of Aluminum Alloys, M.
Tiryakioglu, ed., ASM International, Materials Park, OH, pp. 135-140
(2001).
R.P. Gangloff, “Embrittlement of High Strength -Ti Alloys”, in Advances in
Fracture Research, Proceedings of ICF10, K. Ravi-Chandar, B.L. Karihaloo,
T. Kishi, R.O. Ritchie, A.T. Yokobori, Jr. and T. Yokobori, eds., Paper No.
ICF108920R, CD version, Elsevier Science, Oxford, UK, (2001).
D. Li, R.P. Gangloff, G.H. Bray, M.V. Glazov and R.J. Rioja, “Aging Dependent
Intrinsic Fatigue Crack Propagation In AA2024”, in Advances in the
Metallurgy of Aluminum Alloys, M. Tiryakioglu, ed., ASM International,
Materials Park, OH, pp.105-118 (2001).
Z. Gasem and R.P. Gangloff, “Rate-Limiting Processes in Environmental
Fatigue Crack Propagation in 7000-Series Aluminum Alloys”, in Chemistry
and Electrochemistry of Corrosion and Stress Corrosion Cracking: A
Symposium Honoring the Contributions of R.W. Staehle, R.H. Jones, ed.,
TMS-AIME, Warrendale, PA, pp. 501-521 (2001).
R.L.S. Thomas, R.P. Gangloff and J.R. Scully, “Effect of Diffusible Hydrogen
Concentration on Internal Hydrogen Embrittlement of AerMet 100”, CD
file S08p1c.pdf, in Proceedings of the Tri-Service Conference on Corrosion,
J.V. Kelley and B. Placzankis, eds., Army Research Laboratory, Aberdeen,
MD (2000).
E. Richey, III and R.P. Gangloff, “Strain Rate Dependent Environment
Assisted Cracking of /-Ti Alloys in Chloride Solution”, in Environmentally
Assisted Cracking: Predictive Methods for Risk Assessment and Evaluation
of Materials, Equipment, and Structures, ASTM STP 1401, R.D. Kane, Ed.,
American Society for Testing and Materials, West Conshohocken, PA,
pp.104-127 (2000).
K.R. Cooper, L.M. Young, R.P. Gangloff, and R.G. Kelly, “The Electrode
Potential Dependence of Environment-Assisted Cracking of AA7050”,
Materials Science Forum, Vols. 331-337, pp. 1625-1634 (2000).
Z.M. Gasem and R.P. Gangloff, “Effect of Temper on Environment-Assisted
Fatigue Crack Propagation in 7000-Series Aluminum Alloys”, Materials
Science Forum, Vols. 331-337, pp. 1479-1488 (2000).
B.P. Somerday, L.M. Young and R.P. Gangloff, “Crack Tip Mechanics Effects
on Environment-Assisted Cracking of Beta-Titanium Alloys in Aqueous
NaCl”, Fatigue and Fracture of Engineering Materials and Structures, Vol.
23, pp. 39-58 (2000).
B.P. Somerday and R.P. Gangloff, “Effect of Strength on EnvironmentAssisted Cracking of Ti-8V-6Cr-4Mo-4Zr-3Al in Aqueous Chloride: Age
Hardening vs Work Hardening”, Materials Science and Engineering A, Vol.
A254, pp. 166-178 (1998).
B.P. Somerday and R.P. Gangloff, “Effect of Strength on EnvironmentAssisted Cracking of Ti-8V-6Cr-4Mo-4Zr-3Al in Aqueous Chloride: Crack
Tip Strain Rate”, Materials Science and Engineering A, Vol. A254, pp. 179188 (1998).
R.P. Gangloff, “Fracture Mechanics Characterization of Hydrogen
Embrittlement in Cr-Mo Steel”, in Present Situation on Steels for Hydrogen
Pressure Vessels, Creusot-Loire Industrie, Le Creusot, France (1998).
M.J. Haynes and R.P. Gangloff, "Temperature-Dependent Void-Sheet
Fracture in Al-Cu-Mg-Ag", Metallurgical and Materials Transactions, A,
Vol. 29A, pp. 1599-1613 (1998).
B.P. Somerday, N.R. Moody, J.E. Costa and R.P. Gangloff, “EnvironmentInduced Cracking in Structural Titanium Alloys”, Paper No. 27, Corrosion
‘98, NACE, Houston, TX, (1998).
B.P. Somerday and R.P. Gangloff, “Environmental Cracking Limitations to
the Application of High Strength Beta-Titanium Alloys in the Marine
Environment”, in Proc. of the Tri-Service Conference on Corrosion, Vol. I,
D.A. Shifler, ed., LaQue Corrosion Services, Wrightsville Beach, NC, pp. 1-1
to 1-21 (1997).
M.J. Haynes and R.P. Gangloff, "Elevated Temperature Fracture Toughness
of Al-Cu-Mg-Ag Sheet: Characterization and Modeling", Metallurgical and
Materials Transactions, A, Vol. 28A, pp. 1815-1829 (1997).
L.M. Young, G.A. Young, J.R. Scully and R.P. Gangloff, “The Effects of
Electrode Potential and Temper on Environment Assisted Cracking in
AA7050", in Light Weight Alloys for Aerospace Applications IV, E. Lee, W.E.
Frazier, N.J. Kim and K. Jata, eds., TMS-AIME, Warrendale, PA, pp. 3-18
(1997).
J.A. Lillard, R.G. Kelly and R.P. Gangloff, “Effect of Electrode Potential on
Stress Corrosion Cracking and Crack Chemistry of a Nickel-Base
Superalloy”, Corrosion ‘97, Paper No. 197, NACE, Houston, TX (1997).
M.J. Haynes and R.P. Gangloff, "High Resolution R-Curve Characterization
of the Fracture Toughness of Thin Sheet Aluminum Alloys", Journal of
Testing and Evaluation, Vol. 25, pp. 82-98 (1997).
M.J. Haynes, B.P. Somerday, C.L. Lach and R.P. Gangloff, "Micromechanical
Modeling of Temperature-Dependent Initiation Fracture Toughness in
Advanced Aluminum Alloys", in Elevated Temperature Effects on Fatigue
and Fracture, ASTM STP 1297, R.S. Piascik, R.P. Gangloff and A. Saxena,
eds., ASTM, Philadelphia, PA, pp. 165-190 (1997).
R.P. Gangloff, B.P. Somerday and D.L. Cooke, "Understanding Crack Tip
Strain Rate Effects in Hydrogen Embrittlement for Improved Fitness-forService Modeling", in Life Prediction of Structures Subject to Environmental
Degradation, P.L. Andresen and R.N. Parkins, eds., NACE, Houston, TX, pp.
161-175 (1996).
D.C. Slavik and R.P. Gangloff, "Environment and Microstructure Effects on
Fatigue Crack Facet Orientation in an Al-Li-Cu-Zr Alloy", Acta Metallurgica
et Materialia, Vol. 44, pp. 3515-3534 (1996).
R.S. Piascik and R.P. Gangloff, "Modeling Environment-Enhanced Fatigue
Crack Growth in Al-Li-Cu-Zr", in Hydrogen Effects on Material Behavior,
A.W. Thompson and N.R. Moody, eds., TMS-AIME, Warrendale, PA, pp.
409-433 (1996).
S.S. Kim, M.J. Haynes and R.P. Gangloff, "Localized Deformation Control of
Elevated Temperature Fracture in Submicron Grain Aluminum with
Dispersoids", Materials Science and Engineering A, Vol. 203, pp. 256-271
(1995).
B.P. Somerday, Yang Leng and R.P. Gangloff, "Elevated Temperature
Fracture Toughness of a Particulate Reinforced Aluminum Alloy
Composite--Part II: Micromechanical Modeling", Fatigue and Fracture of
Engineering Materials and Structures, Vol. 18, pp. 1031-1050 (1995).
B.P. Somerday, Yang Leng and R.P. Gangloff, "Elevated Temperature
Fracture Toughness of a Particulate Reinforced Aluminum Alloy
Composite--Part I:
Fracture Toughness", Fatigue and Fracture of
Engineering Materials and Structures, Vol. 18, pp. 565-582 (1995).
R.P. Gangloff, "Corrosion Fatigue Cracking", in Corrosion Tests and
Standards: Application and Interpretation, R. Baboian, ed., ASTM,
Philadelphia, PA, pp. 253-271 (1995).
L.M. Young, G.A. Young, Jr., J.R. Scully, and R.P. Gangloff, "Aqueous
Environment Enhanced Crack Propagation in High Strength Beta Titanium
Alloys", Metallurgical and Materials Transactions, A, Vol. 26A, pp. 12571271 (1995).
J.A. Grandle, B.P. Somerday and R.P. Gangloff, "Yield Strength and Solution
Composition Effects on Aqueous Environmental Cracking of Ti-8V-6Cr4Zr-4Mo-3Al (Beta C)", in Proc. of the Tri-Service Conference on Corrosion,
T. Naguy, ed., USAF Wright-Patterson Air Force Base, OH, pp. 375-392
(1994).
M.E. Mason and R.P. Gangloff, "Modeling Time-Dependent Corrosion
Fatigue Crack Propagation in 7000 Series Aluminum Alloys", in FAA/NASA
International Symposium on Advanced Structural Integrity Methods for
Airframe Durability and Damage Tolerance, C.E. Harris, ed., NASA
Conference Publication 3274, Part 1, NASA-Langley Research Center,
Hampton, VA, pp. 441-462 (1994).
B.P. Somerday and R.P. Gangloff, "Global Constraint Insensitive Fracture in
a Metal Matrix Composite", Metallurgical and Materials Transactions, A,
Vol. 25A, pp. 1471-1479 (1994).
R.P. Gangloff, R.S. Piascik, D.L. Dicus and J.C. Newman, "Fatigue Crack
Propagation in Aerospace Aluminum Alloys", Journal of Aircraft, Vol. 31,
pp. 720-729 (1994).
R.P. Gangloff and R.G. Kelly, "Microbe Enhanced Environmental Fatigue
Crack Propagation in HY130 Steel", Corrosion, Vol. 50, pp. 345-354
(1994).
W.C. Porr, Jr. and R.P. Gangloff, "Elevated Temperature Fracture of RS/PM
Alloy 8009: Part I -- Fracture Mechanics Behavior", Metallurgical and
Materials Transactions, A, Vol. 25A, pp. 365-379 (1994).
L.M. Young and R.P. Gangloff, "Hydrogen Environment Embrittlement of
Beta Titanium Alloys", in Titanium '92, Science and Technology, Vol. 3, F.H.
Froes and I.L. Caplan, eds., TMS-AIME, Warrendale, PA, pp. 2209-2216
(1993).
R.S. Piascik and R.P. Gangloff, "Environmental Fatigue of an Al-Li-Cu Alloy:
Part II - Microscopic Hydrogen Cracking Processes", Metallurgical
Transactions, A, Vol. 24A, pp. 2751-2762 (1993).
D.C. Slavik, J.A. Wert and R.P. Gangloff, "Determining Fracture Facet
Crystallography Using Electron Back Scatter Patterns and Quantitative Tilt
Fractography", Journal of Materials Research, Vol. 8, pp. 2482-2491
(1993).
D.C. Slavik, C.P. Blankenship, Jr., E.A. Starke, Jr. and R.P. Gangloff, "Intrinsic
Fatigue Crack Growth Rates for Al-Li-Cu-Mg Alloys in Vacuum",
Metallurgical Transactions A, Vol. 24A, pp. 1807-1817 (1993).
D.C. Slavik and R.P. Gangloff, "Microscopic Processes of Environmental
Fatigue Crack Propagation in Al-Li-Cu Alloy 2090", in Fatigue '93, Vol. II,
J.-P. Bailon and J.I. Dickson, eds., EMAS, West Midlands, UK, pp. 757-765
(1993).
R.P. Gangloff, D.C. Slavik, R.S. Piascik and R.H. Van Stone, "Direct Current
Electrical Potential Measurement of the Growth of Small Fatigue Cracks", in
Small Crack Test Methods, ASTM STP 1149, J.M. Larsen and J.E. Allison,
eds., ASTM, Philadelphia, PA, pp. 116-168 (1992).
J.A. Wagner and R.P. Gangloff, "Fracture Toughness of Al-Li-Cu-In Alloys",
Scripta Metallurgica et Materialia, Vol. 26, pp. 1779-1784 (1992).
B.P. Somerday, Yang Leng, F.E. Wawner and R.P. Gangloff, "Elevated
Temperature Fracture Toughness of a SiC Particulate Reinforced 2009
Aluminum Composite", in Advanced Metal Matrix Composites for Elevated
Temperatures, M.N. Gungor, ed., ASM International, Metals Park, OH, pp.
167-182 (1992).
W.C. Porr, Jr., Anthony Reynolds, Yang Leng and R.P. Gangloff, "Elevated
Temperature Cracking of RSP Aluminum Alloy 8009: Characterization of
the Environmental Effect", Scripta Metallurgica et Materialia, Vol. 25, pp.
2627-2632 (1991).
R.S. Piascik and R.P. Gangloff, "Environmental Fatigue of an Al-Li-Cu Alloy:
Part I - Intrinsic Crack Propagation Kinetics in Hydrogenous Environments",
Metallurgical Transactions, A, Vol. 22A, pp. 2415-2428 (1991).
W.C. Porr, Jr., Y. Leng, and R.P. Gangloff, "Elevated Temperature Fracture
Toughness of P/M Al-Fe-V-Si", in Low Density, High Temperature Powder
Metallurgy Alloys, W.E. Frazier, M.J. Koczak, and P.W. Lee, eds., TMS-AIME,
Warrendale, PA, pp. 129-155 (1991).
Yang Leng, W.C. Porr, Jr. and R.P. Gangloff, "Time Dependent Crack Growth
in P/M Al-Fe-V-Si at Elevated Temperatures", Scripta Metallurgica et
Materialia, Vol. 25, pp. 895-900 (1991).
R.P. Gangloff, "Hydrogen Environment Enhanced Fatigue Crack Propagation
in Metals", in Advanced Earth-To-Orbit Propulsion Technology, R.J.
Richmond and S.T. Wu, eds., NASA CP 3092, Vol. III, Washington, DC, pp.
483-510 (1990).
Y. Leng, W.C. Porr, Jr. and R.P. Gangloff, "Tensile Deformation of 2618 and
Al-Fe-Si-V Aluminum Alloys at Elevated Temperatures", Scripta
Metallurgica et Materialia, Vol. 24, pp. 2163-2168 (1990).
R. Krishnamurthy, C.N. Marzinsky and R.P. Gangloff, "Microstructure and
Yield Strength Effects on Hydrogen Environment Enhanced Fatigue of
Steels", in Hydrogen Effects on Material Behavior, N.R. Moody and A.W.
Thompson, eds., TMS-AIME, Warrendale, PA, pp. 891-908 (1990).
R.P. Gangloff, "Corrosion Fatigue Crack Propagation in Metals", in
Environment Induced Cracking of Metals, R.P. Gangloff and M.B. Ives, eds.,
NACE, Houston, TX, pp. 55-109 (1990).
R.S. Piascik and R.P. Gangloff, "Aqueous Environment Effects on Intrinsic
Corrosion Fatigue Crack Propagation in an Al-Li-Cu Alloy", in Environment
Induced Cracking of Metals, R.P. Gangloff and M.B. Ives, eds., NACE,
Houston, TX, pp. 233-239 (1990).
K.T. Venkateswara Rao, R.S. Piascik, R.P. Gangloff and R.O. Ritchie, "Fatigue
Crack Propagation in Aluminum-Lithium Alloys",in Proc. Fifth Intl. Al-Li
Conf., T.H. Sanders, Jr. and E.A. Starke, Jr., eds., Materials and Component
Engineering Publications Ltd., Birmingham, UK, pp. 955-971 (1989).
R.P. Wei and R.P. Gangloff, "Environmentally Assisted Crack Growth in
Structural Alloys: Perspectives and New Directions", in Fracture Mechanics:
Perspectives and Directions, ASTM STP 1020, R.P. Wei and R.P. Gangloff,
eds., ASTM, Philadelphia, PA, pp. 233-264 (1989).
R.S. Piascik and R.P. Gangloff, "Intrinsic Fatigue Crack Propagation in
Aluminum-Lithium Alloys: The Effect of Gaseous Environments", in
Advances in Fracture Research, K. Salama, K. Ravi-Chandar, D.M.R. Taplin
and P. Rama Rao, eds., Pergamon Press, London, UK, pp. 907-918 (1989).
R.P. Gangloff, "Crack Tip Models of Hydrogen Environment Embrittlement:
Applications to Fracture Mechanics Life Prediction", Materials Science and
Engineering, Vol. A103, pp. 157-166 (1988).
R.P. Gangloff, "Ethylene Inhibition of Gaseous Hydrogen Embrittlement in
High Strength Steel", in Basic Questions in Fatigue, Vol. 2, ASTM STP 924,
R.P. Wei and R.P. Gangloff, eds., ASTM, Philadelphia, PA, pp. 230-251
(1988).
P.L. Andresen, R.P. Gangloff, L.F. Coffin and F.P. Ford, "Applications of
Fatigue Analyses: Energy Systems", in Fatigue 87, Vol. III-A, R.O. Ritchie
and E.A. Starke, Jr., eds., EMAS, West Midlands, UK, pp. 1723-1751 (1987).
R.P. Gangloff and D.J. Duquette, "Corrosion Fatigue of Metals: A Survey of
Recent Advances and Issues", in Chemistry and Physics of Fracture, R.M.
Latanision and R.H. Jones, eds., Martinus Nijhoff Publishers BV,
Netherlands, pp. 612-645 (1987).
R.P. Gangloff, "A Review and Analysis of the Threshold for Hydrogen
Environment Embrittlement of Steel", in Corrosion Prevention and Control,
33rd Sagamore Army Materials Research Conference, M. Levy and S.
Isserow, eds., US Army Laboratory Command, Watertown, MA, pp. 64-111
(1986).
R.P. Gangloff and R.P. Wei, "Small Crack-Environment Interactions: The
Hydrogen Embrittlement Perspective", in Small Fatigue Cracks, R.O. Ritchie
and J. Lankford, eds., TMS-AIME, Warrendale, PA., pp. 239-264 (1986).
R.P. Gangloff and A. Turnbull, "Crack Electrochemistry Modeling and
Fracture Mechanics Measurement of the Hydrogen Embrittlement
Threshold", in Modeling Environmental Effects on Crack Initiation and
Propagation, R.H. Jones and W.W. Gerberich, eds., TMS-AIME, Warrendale,
PA., pp. 55-81 (1986).
R.P. Gangloff, "Inhibition of Aqueous Chloride Corrosion Fatigue by Control
of Crack Hydrogen Production", in Critical Issues in Reducing the Corrosion
of Steel, H. Leidheiser, Jr. and S. Haruyama, eds., NSF/JSPS, Tokyo, Japan,
pp. 28-50 (1985).
R.P. Gangloff, "The Environmental Effect on Fatigue Crack Propagation", in
Metals Handbook: Mechanical Testing, 9th edition, Vol. 8, ASM, Metals
Park, OH, pp. 403-410 (1985).
R.P. Gangloff, "Crack Size Effects on the Chemical Driving Force for
Aqueous Corrosion Fatigue", Metallurgical Transactions, A, Vol. 16A, pp.
953-969 (1985).
R.P. Gangloff and R.O. Ritchie, "Environmental Effects Novel to the
Propagation of Short Fatigue Cracks", in Fundamentals of Deformation and
Fracture, B.A. Bilby, K.J. Miller and J.R. Willis, eds., Cambridge University
Press, Cambridge, UK, pp. 529-558 (1985).
R.P. Gangloff, "Oxygen Inhibition Model of the Chemical Crack Size Effect
in Corrosion Fatigue", in Embrittlement by the Localized Crack
Environment, R.P. Gangloff, ed., TMS-AIME, Warrendale, PA, pp 265-290
(1984).
R.P. Gangloff, "Solid Cadmium Embrittlement of Textured Zircaloy-2", in
Embrittlement by Liquid and Solid Metals, M.H. Kamdar, ed., TMS-AIME,
Warrendale, PA, pp. 485-505 (1984).
R.P. Gangloff, "Electrical Potential Monitoring of the Formation and Growth
of Small Fatigue Cracks in Embrittling Environments", in Advances in Crack
Length Measurement, C.J. Beevers, ed., EMAS, UK, pp. 175-231 (1982).
R.P. Gangloff, "The Criticality of Crack Size in Aqueous Corrosion Fatigue",
Res Mechanica Letters, Vol. 1, pp. 299-306 (1981).
R.P. Gangloff, "Quantitative Measurements of the Growth Kinetics of Small
Fatigue Cracks in 10Ni Steel", Fatigue Crack Growth Measurement and Data
Analysis, ASTM STP 738, S.J. Hudak, Jr. and R.J. Bucci, eds., ASTM,
Philadelphia, PA, pp. 120-138 (1981).
R.P. Gangloff, "Electrical Potential Monitoring of Crack Formation and
Subcritical Growth from Small Defects", Fatigue of Engineering Materials
and Structures, Vol. 4, No. 1, pp. 15-33 (1981).
R.H. Van Stone and R.P. Gangloff, "The Effect of Processing Parameters on
the Microstructure and Mechanical Properties of Rene 95 Consolidated
from Gas Atomized Powders", in Rapid Solidification Processing, Principles
and Technology II, Claitors Press, Baton Rouge, LA, pp. 317-330 (1980).
R.P. Gangloff, D.E. Graham and A.W. Funkenbusch, "The Influence of
Environment Purity on Gaseous Iodine Embrittlement of Zircaloy-2 and
High Purity Zirconium", Corrosion, Vol. 35, No. 7, pp. 316-325 (1979).
D.S. Tomalin, R.B. Adamson and R.P. Gangloff, "The Performance of
Irradiated Copper and Zirconium Barrier Modified Zircaloy Cladding Under
Simulated PCI Conditions", Zirconium in the Nuclear Industry, ASTM STP
681, ASTM, Philadelphia, PA, pp. 122-144 (1979).
R.P. Gangloff and R.P. Wei, "Fractographic Analysis of Gaseous Hydrogen
Induced Cracking in 18Ni Maraging Steels", Fractography in Failure
Analysis, ASTM STP 645, ASTM, Philadelphia, PA, pp. 87-106 (1978).
R.P. Gangloff and R.P. Wei, "Gaseous Hydrogen Embrittlement of High
Strength Steels", Metallurgical Transactions, A, Vol. 8A, pp. 1043-1053
(1977).
L.F. Coffin and R.P. Gangloff, "Integrated Laboratory Methods for Evaluating
PCI in Zircaloy-2 Fuel Cladding", Proc. Conference Water Reactor Fuel
Performance, Amer. Nuc. Soc., Chicago, IL, pp. 346-355 (1977).
R.P. Gangloff and R.P. Wei, "Gaseous Hydrogen Assisted Crack Growth in
18Ni Maraging Steels", Scripta Metallurgica, Vol. 8, pp. 661-667 (1974).
R.P. Gangloff and R.W. Hertzberg, "Elevated Temperature Tensile and Creep
Rupture Behavior of the Unidirectionally Solidified Ni-Ni3Nb Eutectic
Composite", Proc. Conf. on In-Situ Composites, Vol. 2, NMAB, Washington,
DC, pp. 83-103 (1972).
R.P. Gangloff, R.W. Kraft and J.D. Wood, "Fiberless Region Defects in
Unidirectionally Solidified Al-Al3Ni", Metallurgical Transactions, Vol. 3, pp.
348-350 (1972).
Major Published Reports:
V. Ogarevic, M. Oja, R. Tryon and R.P. Gangloff, “SCCrack User Manual”,
Ver. 2.2, Navmar Applied Sciences Corporation, Warminster, PA (2013).
J. Waldman, R.P. Gangloff and W.E. Garrison, “Development of CorrosionHydrogen Crack Resistant Aircraft Alloys from Mechanistic Understanding”,
Final Report, STTR Topic No. N08-T010 (Phase II), Navmar Applied Sciences
Corporation, Warminster, PA (2011).
R.P. Gangloff, “Impact of Hydrogen Embrittlement on Minimum
Pressurization Temperature for Thick-wall Cr-Mo Steel Reactors in High
Pressure Hydrogen Service”, Final Report, API, Washington, DC (2011).
“DARPA/NGC Structural Integrity Prognosis System”, Contract number
HR0011-04-C-0003, John Papazian, editor, Northrop Grumman Aerospace
Systems, Bethpage, NY (2008).
R.P. Gangloff, J.T. Burns and Sangshik Kim, “Laboratory Characterization
and Fracture Mechanics Modeling of Corrosion-Fatigue Interaction for
Aluminum Alloy Substitution”, Final Report, Contract F09650-03-D-0001,
Aging Aircraft Systems Squadron, WPAFB, OH (2005).
R.P. Gangloff, “Laboratory Studies of Hydrogen Embrittlement in Aging CrMo Steel for Thick-Wall Reactors”, Joint Industry Program on
Hydroprocessing Reactors, A.J. Bagdasarian, Chair, Chevron Research and
Technology Company, Richmond, CA (2001).
R.P. Gangloff and D.L. Cooke, “Failure Analyses and Laboratory
Experimentation for Improved Fracture Mechanics Modeling of Fitness-forService of Welded C-Mn Steel Pressure Vessels in Wet H2S”, Chevron
Research and Technology Company Report, Richmond, CA (1997).
R.P. Gangloff, “Laboratory Methods to Characterize Hydrogen-Enhanced
Crack Propagation in Cr-Mo Steel from Retired Hydroprocessing Reactors”,
Chevron Research and Technology Company Report, Richmond, CA (1997).
Edward Richey, III, Allen W. Wilson, and R.P. Gangloff, "University of Virginia
Fatigue Analysis Software (UVAFAS)”, University of Virginia, Charlottesville,
VA (1995).
Edward Richey, III, A.W. Wilson, J.M. Pope, and R.P. Gangloff, "Computer
Modeling the Fatigue Crack Growth Rate Behavior of Metals in Corrosive
Environments", NASA CR-194982, NASA-Langley Research Center (1994).
R.P. Gangloff and Sang Shik Kim, "Environment Enhanced Fatigue Crack
Propagation in Metals: Inputs to Fracture Mechanics Life Prediction", NASA
CR-191538, NASA-Langley Research Center, Hampton, VA (1993).
R.P. Gangloff, "Critical Assessment of Hydrogen Embrittlement in Pressure
Vessel Steels", Report HPV-59, Materials Properties Council, New York, New
York (1991).
R.P. Gangloff, "Corrosion Fatigue Crack Propagation in Metals", NASA CR4301, NASA-Langley Research Center, Hampton, VA (1990).
R.P. Gangloff, "The Behavior of Unirradiated Zirconium-Lined and
Copper-Plated Zircaloy-2 Tubing Under Simulated PCI Conditions", General
Electric Company Report, GEAP-25093 (1979).
Books edited:
Embrittlement by the Localized Crack Environment, ed., R.P. Gangloff,
TMS-AIME, Warrendale, PA (1984).
Basic Questions in Fatigue, Vol. II, ASTM STP 924, eds., R.P. Wei and R.P.
Gangloff, ASTM, Philadelphia, PA (1988).
Fracture Mechanics: Perspectives and Directions, ASTM STP 1020, eds., R.P.
Wei and R.P. Gangloff, ASTM, Philadelphia, PA (1989).
Environment Induced Cracking of Metals, eds., R.P. Gangloff and M.B. Ives,
NACE, Houston, TX (1990).
Elevated Temperature Effects on Fatigue and Fracture, ASTM STP 1297,
eds., R.S. Piascik, R.P. Gangloff and A. Saxena, ASTM, Philadelphia, PA
(1997).
Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: The
Problem, Its Characterization, and Effects on Particular Alloy Classes,
Volume 1, eds., R.P. Gangloff and B.P. Somerday, Woodhead Publishing
Limited, Cambridge, UK, 840 pages (2012).
Gaseous Hydrogen Embrittlement of Materials in Energy Technologies:
Mechanisms, Modelling and Future Developments, Volume 2, eds., R.P.
Gangloff and B.P. Somerday, Woodhead Publishing Limited, Cambridge,
UK, 500 pages (2012).
PhD Dissertations Advised:
Mechanisms of Intrinsic Damage Localization During Corrosion Fatigue:
Al-Li-Cu System, Robert S. Piascik, University of Virginia, Charlottesville, VA
(1990).
Microstructure and Yield Strength Effects on Hydrogen Environment
Fatigue of Steels, Ravi Krishnamurthy, University of Virginia, Charlottesville,
VA (1991).
Elevated Temperature Fracture of Advanced Powder Metallurgy Aluminum
Alloy 8009, William C. Porr, Jr., University of Virginia, Charlottesville, VA
(1992).
Environmental Fatigue Crack Growth and Microscopic Damage Mechanisms
in AA2090, Donald C. Slavik, University of Virginia, Charlottesville, VA
(1993).
Elevated Temperature Fracture of Advanced Aluminum Alloys, Michael J.
Haynes, University of Virginia, Charlottesville, VA (1997).
Metallurgical and Crack-Tip Mechanics Effects on Environment-Assisted
Cracking of Beta-Titanium Alloys in Aqueous Chloride, Brian P. Somerday,
University of Virginia, Charlottesville, VA (1998).
Environment Assisted Cracking of a Nickel-Based Superalloy in HydrogenProducing Solutions, Jennifer A. Lillard, University of Virginia,
Charlottesville, VA (1998).
with R.G. Kelly
Frequency Dependent Environmental Fatigue Crack Propagation in the
7XXX Alloy/Aqueous Chloride System, Zuhair M. Gasem, University of
Virginia, Charlottesville, VA (1999).
Microstructural Dependence of Aqueous-Environment Assisted Crack
Growth and Hydrogen Uptake in AA7050, Lisa M. Young, University of
Virginia, Charlottesville, VA (1999).
Microstructure and Strain Rate Effects on the Environment Assisted
Cracking of /-Ti Alloys in Aqueous Chloride, Edward Richey, III, University
of Virginia, Charlottesville, VA (2000).
Internal Hydrogen Embrittlement of High-Strength Beta-Alpha Titanium
Alloys, Sean P. Hayes, University of Virginia, Charlottesville, VA (2000)
Measurement and Modeling of Temperature Dependent Hydrogen
Embrittlement of Cr-Mo Steel to Enable Fitness-for-Service Modeling,
Abdullah M. Al-Rumaih, University of Virginia, Charlottesville, VA (2004).
Characterization of Exposure Dependent Fatigue Crack Growth Kinetics and
Damage Mechanisms for Aluminum Alloys, Yunjo Ro, University of Virginia,
Charlottesville, VA (2008).
Effect of Aqueous Phase Inhibitors on Mitigating Potential-Dependent
Hydrogen Environment Assisted Cracking of an Ultra-high Strength Steel,
Sami M. Al-Ghamdi, University of Virginia, Charlottesville, VA (2010).
with J.R. Scully
Effect of Initiation Feature and Environment on Fatigue Crack Formation
and Early Propagation in Al-Zn-Mg-Cu, James T. Burns, University of
Virginia, Charlottesville, VA (2010).
Inhibition of Environmental Fatigue Crack Propagation in Age-Hardenable
Aluminum Alloys, Jenifer S. Warner, University of Virginia, Charlottesville,
VA (2010).
Intergranular Stress Corrosion Cracking of Low-Temperature Sensitized AlMg Alloys, Cortney B. Crane, University of Virginia, Charlottesville, VA
(2014).
Metallurgical Control of Stress Corrosion Cracking in Ultra-High Strength
Stainless Steel, Greger L. Pioszak, University of Virginia, Charlottesville,
VA, in progress (2015).
MS Theses Advised:
Elevated Temperature Fracture Toughness of a SiC Particulate-Reinforced
2009 Aluminum Composite, Brian P. Somerday, University of Virginia,
Charlottesville, VA (1993).
Environment-Assisted Cracking in Beta Titanium Alloys, Lisa M. Young,
University of Virginia, Charlottesville, VA (1993).
Time-Dependent Corrosion Fatigue Crack Propagation in 7000 Series
Aluminum Alloys, Mark E. Mason, University of Virginia, Charlottesville, VA
(1994).
Empirical Modeling of Environment-Enhanced Fatigue Crack Propagation in
Structural Alloys for Component Life Prediction,
Edward Richey III,
University of Virginia, Charlottesville, VA (1995).
Internal Hydrogen Embrittlement of a Trap-Rich Ultrahigh-Strength Steel,
AerMet100, Richard L.S. Thomas, University of Virginia, Charlottesville, VA
(2000).
with J.R. Scully
Post Overload Fatigue Crack Growth Retardation in AA7050 in Aqueous
Chloride-Chromate Environments, Chelsey L. Gallik, University of Virginia,
Charlottesville, VA (2002).
Residual, Diffusible and Total Hydrogen Concentrations and Embrittlement
after Baking in Cadmium Plated AerMet100, Hakan Dogan, University of
Virginia, Charlottesville, VA (2004).
with J.R. Scully
Fatigue Crack Surface Crystallography of Precipitation Hardened
Aluminum Alloys, Yunjo Ro, University of Virginia, Charlottesville, VA
(2004).
The Effect of Corrosion Product Formation on Fatigue Crack Closure of
AA7075-T6511 and AA7055-T74511, Marco P. Ciccone, University of
Virginia, Charlottesville, VA (2005).
with R.G. Kelly
Modeling Fatigue Behavior of Pre-Corroded Aluminum Alloys Using Linear
Elastic Fracture Mechanics, James T. Burns, University of Virginia,
Charlottesville, VA (2006).
Measurement and Modeling of Hydrogen Assisted Cracking of Ultra-High
Strength Steel, Yongwon Lee, University of Virginia, Charlottesville, VA
(2007).
Consulting:
Naval Research Laboratory
Exxon Research and Engineering Company
Crouse-Hinds
Infilco Degremont
Stephenson and Balthrop, Ltd.
Lawrence Livermore National Laboratory
Sharples Incorporated
NASA-Johnson Space Flight Center
United Technologies - Pratt & Whitney
Southwest Research Institute
Allied Signal, Inc.
Carson Associates/U.S. Internal Revenue Service
General Electric Corporate Research and Development
McGuire, Woods, Battle & Boothe
Chevron Research and Technology Company
International Consortium of 14 Petrochemical and Steel Companies
Christian and Barton
ALCOA Technical Center
Structural Reliability Technology
Century Aluminum
Rogers, Joseph, O’Donnell & Quinn
S&KT/U.S. Air Force
NASA-Langley Research Center
Questek Innovations, LLC
General Motors
American Petroleum Institute
Columbus McKinnon Corporation
Navmar Applied Sciences Corporation
Courses Developed:
Fracture Mechanics of Engineering Materials (graduate; televised)
Physical Metallurgy of Transition Element Alloys (graduate; televised)
Deformation and Fracture Mechanics of Structural Materials
undergraduate and graduate; televised)
(advanced
Engineering Materials: Properties and Applications (undergraduate)
Aerospace Materials: Properties and Applications (undergraduate)
Origins of Mechanical Behavior of Materials
(undergraduate/graduate)
Short Course Participation:
Modern View of Fatigue; Union College, Schenectady, NY; 18 years, 1976 to
1993.
Aircraft Design and Development; NAVAIR, Alexandria, VA; 13 years, 1986
to 1998.
Electrochemical Techniques in Corrosion Engineering; UVa Center for
Electrochemical Science and Engineering; 1 year, 1994.
Revised January, 2014