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R. Craig McClung
Program Director
Email: cmcclung@swri.org
Phone: (210) 522-2422
Fax: (210) 522-6965
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Dr. McClung has over twenty years of research and program management experience in fatigue and fracture, including both detailed scientific studies of basic phenomena and the development of robust engineering models for structural life prediction. His interests are focused on the intersection between materials and mechanics, with particular implications for the structural reliability of components.
Dr. McClung manages a large Federal Aviation Administration program to develop the DARWIN® probabilistic design system for gas turbine engine rotor lifing, and he also manages a large industrial consortium for development and support of the NASGRO® fracture mechanics computer code. NASGRO has received the prestigious NASA Software of the Year Award (2003), and both DARWIN (2000) and NASGRO (2003) have won the R&D100 award as one of the 100 most technologically significant new products of the year. Dr. McClung has provided significant leadership for other programs involving spectrum fatigue crack growth in military aircraft structures, high cycle fatigue in military gas turbine engines, fracture mechanics proof test logic and elastic-plastic fracture mechanics methods for space propulsion systems, microstructure-based probabilistic fatigue life models for naval steels, stress and thermal fatigue analysis of anodized aluminum coatings for the International Space Station, and fatigue and reliability analyses of critical Space Shuttle hardware.
The characterization of fatigue crack growth and crack closure has been Dr. McClung's primary personal field of technical specialty. Topics of particular interest include elastic-plastic fatigue crack behavior, small crack behavior, and life prediction methods. He is internationally known for his research in elastic-plastic finite element simulations of fatigue cracks, including both detailed characterization of near-tip behavior and the correlation of fatigue crack growth rates.
Dr. McClung has authored or co-authored more than eighty publications, including invited keynote lectures at the Sixth and Seventh International Fatigue Congresses. Currently Dr. McClung serves as the USA Associate Editor of the international journal Fatigue and Fracture of Engineering Materials and Structures, Associate Editor of the ASME Journal of Engineering Materials and Technology, and Chairman of the Task Group on Small Cracks in ASTM Committee E08 on Fatigue and Fracture. He formerly served a three-year term on the Young Investigators Advisory Committee of the Institute for Mechanics and Materials, University of California, San Diego. He has taught advanced undergraduate courses on the structure and mechanical behavior of engineering materials as well as fatigue design short courses for industrial clients.
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Professional Chronology
Union Carbide Corporation, Nuclear Division, Oak Ridge, Tennessee: cooperative engineering student, 1978-80; University of Illinois: graduate research assistant and graduate teaching assistant, 1982-8; Southwest Research Institute: 1988-[senior research engineer, 1988-94; group leader, 1994; manager, 1994-2003; senior program manager, 2003-6; program director, 2006-present].
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Honors & Awards
L. R. Shobe Award – Outstanding Student in Engineering Mechanics, University of Tennessee, 1979; Outstanding Senior in Engineering, University of Tennessee, 1981; J. O. Smith Award – Outstanding Graduate Teaching Assistant in Theoretical and Applied Mechanics, University of Illinois, 1984; R&D100 Award, 2000, 2003; NASA Software of the Year Award, 2003.
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Memberships
ASTM International, Tau Beta Pi
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Publications/Presentations
2009
McClung, R.C. and M.P. Enright. A Probabilistic Analysis Framework for Bimodal Fatigue Life Behavior.
Presented at the Propulsion-Safety and Affordable Readiness (P-SAR) Conference, Myrtle Beach, South Carolina, March 2009.
McClung, R.C., Y.-D. Lee, M.P. Enright, and S.K. Fitch. A New Computational Framework for Fatigue Crack Growth Analysis of Components.
Presented at the 12th International Conference on Fracture (ICF12), Ottawa, Canada, July 2009.
Riha, D.S., R.C. McClung, and J.M. Mcfarland. Probabilistic Fracture Mechanics Guidelines and Templates.
Presented at the International Conference on Structural Safety and Reliability (ICOSSAR), Osaka, Japan, September 2009.
2008
Enright, M.P., S.J. Hudak Jr., and R.C. McClung. Probabilistic Treatment of Aircraft Engine Usage.
Presented at the 53rd American Society of Mechanical Engineers (ASME) International Gas Turbine and Aeroengine Technical Congress, Paper GT2008-15393, Berlin, Germany, June 2008.
Hudak Jr., S.J., M.P. Enright, H.R. Millwater, and R.C. McClung. Enabling Life Prediction, Sensor, and Probabilistic Analysis Technologies for Enhanced Turbine Engine Health Management.
Presented at the Propulsion Safety and Affordable Reliability Conference, Myrtle Beach, South Carolina, March 2008.
View All Publications
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Recent Projects
Probabilistic Fracture Mechanics Analysis of Space Shuttle Flowliner
Develop deterministic and probabilistic fracture mechanics models to quantify the reliability of the space shuttle main engine flowliner.
Turbine Rotor Material Design
Develop a probabilistic-based damage tolerance design code to augment the current safe-life philosophy for life management of commercial aircraft gas turbine rotors and disks.
Probabilistic Structural Analysis Methods for Space Propulsion Components
Develop probabilistic structural analysis methods and computational tools to evaluate the reliability and risk of space propulsion system components such as turbine blades, transfer ducts, and liquid oxygen posts.
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Contact Information |
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Carl F. Popelar, Ph.D.
Mechanics and Materials
(210) 522-4213
cpopelar@swri.org |
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Related Terminology |
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probabilistic analysis
reliability analysis
uncertainty quantification
life prediction
materials integrity
risk of failure
risk assessment
biomechanics
biomaterials
NESSUS
DARWIN
NASGRO
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