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Southwest Research Institute, University of Texas at San Antonio, Mustard Seed Software, GE Aviation, Honeywell, Pratt & Whitney, Rolls-Royce Corporation (2008). Turbine Rotor Material Design, Phase 2 Final Report, FAA Grant 99-G-016, Federal Aviation Administration, Washington, DC.
McClung, R. C. (2005). "A Bibliography and Abstracts on the Stability of Residual Stresses and Their Influence on Fatigue."
Srivatsa, S. (2005). "Deformation Strain Needed to Crack Hard Alpha Anomalies."
Srivatsa, S. (2002). "Turbine Rotor Material Design Task 2: Effect of Forging on Defect Morphology Phase II Report."
Woodfield, A. (2002). "Sensitivity of Ti-17 to an Oxygen-Stabilized Hard Alpha."
Southwest Research Institute, Allied Signal, General Electric, Pratt & Whitney, Rolls-Royce Allison, Scientific Forming Technologies (2000). Turbine Rotor Material Design, Phase 1 Final Report, FAA Grant 95-G-041, Federal Aviation Administration, Washington, DC. Note: this file is very large (86 MB)
 

Articles and Presentations
Phase II Article List
Phase II Presentation List
Phase I Article List
Phase I Presentation List

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2013
Chan, K.S., Enright, M.P., and Moody, J.P. (2013). "Development of a probabilistic methodology for predicting hot corrosion fatigue crack growth life of gas turbine engine disks," paper GT2013-95057, Proceedings of the 58th ASME International Gas Turbine & Aeroengine Technical Congress, San Antonio, TX, June 3-7, 2013.
Chan, K.S., Enright, M.P., Moody, J.P., and Fitch, S. (2013). "A microstructure-based time-dependent crack growth model for life and reliability prediction of turbopropulsion systems," Proceedings of the TMS 2013 Annual Meeting & Exhibition, San Antonio, TX, March 3-7, 2013.
Enright, M.P., McFarland, J., McClung, R.C., Wu, W-T., and Shankar, R. (2013). “A probabilistic framework for incorporating material processing parameters into fracture risk computations,” Proceedings of the 11th International Conference on Structural Safety and Reliability (ICOSSAR), New York, NY, USA, June 16-20, 2013.
Enright, M.P., McFarland, J., McClung, R.C., Moody, J.P., Wu, W-T., and Shankar, R. (2013). "Probabilistic integration of material process modeling and fracture risk assessment using Gaussian Process models," chapter DOI 10.2514/6.2013-1851, Proceedings of the 15th AIAA Non-Deterministic Approaches Conference, Boston, MA, April 8-11, 2013.
Gorelik, M., Obayomi, J., Slovisky, J., Frias, D., Swanson, H., McFarland, J., Enright, M.P., and Riha, D. (2013). "Effect of manufacturing variability on turbine engine performance: a probabilistic study," paper GT2013-95145, Proceedings of the 58th ASME International Gas Turbine & Aeroengine Technical Congress, San Antonio, TX, June 3-7, 2013.
Moody, J.P., Enright, M.P., and Liang, W. (2013). "An optimal automated zone allocation approach for risk assessment of gas turbine engine components," paper GT2012-69968, Proceedings of the 58th ASME International Gas Turbine & Aeroengine Technical Congress, San Antonio, TX, June 3-7, 2013.

 

2012
Chan, K.S., Enright, M.P., Moody, J.P., Hocking, B., and Fitch, S. (2012). “Life prediction for turbopropulsion systems under dwell fatigue conditions,” Journal of Engineering for Gas Turbines and Power, ASME, 134 (12) pp. 122501-8. Award winning article (ASME Structures & Dynamics Committee Best Paper Award 2012).
Chan, K.S., Enright, M.P., Golden, P.J., Naboulsi, S., Chandra, R., and Pentz, A.C. (2012). "Probabilistic high-cycle fretting fatigue assessment of gas turbine engine materials,” Journal of Engineering for Gas Turbines and Power, ASME, 134 (6) pp. 062502:1-8.
Enright, M.P., McClung, R.C., Liang, W., Lee, Y-D., Moody, J.P., and Fitch, S. (2012). "A tool for probabilistic damage tolerance of hole features in turbine engine rotors," paper GT2012-69968, Proceedings of the 57th ASME International Gas Turbine & Aeroengine Technical Congress, Copenhagen, Denmark, June 11-15, 2012.
Enright, M.P., Moody, J.P., Chandra, R., and Pentz, A.C. (2012). "Influence of mission variability on fracture risk of gas turbine engine components," paper GT2012-69960, Proceedings of the 57th ASME International Gas Turbine & Aeroengine Technical Congress, Copenhagen, Denmark, June 11-15, 2012.
Liang, W. and Enright, M.P. (2012). "Estimating the probabilistic size and shape distributions of 3D anomalies from sectioning measurements using the stereological unfolding approach," Journal of Engineering for Gas Turbines and Power, ASME, 134 (5) pp. 1-7.
McClung, R.C., Lee, Y-D., Enright, M.P., and Liang, W. (2012). "New methods for automated fatigue crack growth and reliability analysis," paper GT2012-69121, Proceedings of the 57th ASME International Gas Turbine & Aeroengine Technical Congress, Copenhagen, Denmark, June 11-15, 2012.
McClung, R.C., Enright, M.P., Liang, Moody, J.P., Wu, W-T., Shankar, R., Luo, W., Oh, J, and Fitch, S. (2012). "Integration of manufacturing process simulation with probabilistic damage tolerance analysis of aircraft engine components," Proceedings of the 14th AIAA Non-Deterministic Approaches Conference, Honolulu, HI, April 23-26, 2012.

 

2011
Enright, M.P., and McClung, R.C. (2011). “A probabilistic framework for gas turbine engine materials with multiple types of anomalies,” Journal of Engineering for Gas Turbines and Power, ASME, 133 (8) pp. 082502:1-10.
Enright, M.P., Chan, K.S., Moody, J.P., Golden, P., Chandra, R., and Pentz, A. (2011). “Influence of random residual stress on fretting fatigue risk of engine disks,” AIAA Journal, 49 (5), pp. 881-889.
Enright, M.P., and McClung, R.C. (2011). "Estimating marginal densities of materials with multiple anomaly types," Proceedings of the 11th International Conference on Applications of Statistics and Probability in Civil Engineering (ICASP11), Zurich, Switzerland, Aug 1-4, 2011.
Chan, K.S., et al. (2011). "Probabilistic high-cycle fretting fatigue assessment of gas turbine engine materials," Paper GT2011-46686, Proceedings of the 56th ASME International Gas Turbine & Aeroengine Technical Congress, Vancouver, Canada, June 6-11, 2011.
Liang, W. and Enright, M.P. (2011). "Estimating the probabilistic size and shape distributions of 3d anomalies from sectioning measurements using the stereological unfolding approach," Paper GT2011-46653, Proceedings of the 56th ASME International Gas Turbine & Aeroengine Technical Congress, Vancouver, Canada, June 6-11, 2011.

 

2010
Chan, K.S., et al. (2010). “Toward developing a probabilistic methodology for predicting high-cycle fretting fatigue in aero-engines,” Paper GT2010-23007, Proceedings of the 55th ASME International Gas Turbine & Aeroengine Technical Congress, Glasgow, Scotland, June 14-18, 2010.
Enright, M.P., et al. (2010). “Development of risk contours for assessment of aircraft engine components,” Paper AIAA-2010-2846, Proceedings of the 12th AIAA Non-Deterministic Approaches Conference, Orlando, FL, April 12-15, 2010.
Enright, M.P., et al. (2010). “Probabilistic fretting fatigue assessment of aircraft engine disks,” Journal of Engineering for Gas Turbines and Power, ASME, 132 (7), pp. 072502:1-9.
Enright, M.P., et al. (2010). “Probabilistic treatment of crack formation and growth for gas turbine engine materials,” Journal of Engineering for Gas Turbines and Power, ASME, 132 (8), pp. 082106:1-8.
Enright, M.P., and McClung, R.C. (2010). “A probabilistic framework for gas turbine engine materials with multiple types of anomalies,” Paper GT2010-23618, Proceedings of the 55th ASME International Gas Turbine & Aeroengine Technical Congress, Glasgow, Scotland, June 14-18, 2010.
McClung, R. C., et al. (2010). “Automated Fatigue Crack Growth Analysis of Components,” Fatigue 2010, 10th International Fatigue Congress, Prague, Czech Republic, June 2010. Also published in Procedia Engineering, Vol. 2, 2010, pp. 629-637.
Momin, F.N. et al. (2010). “A non-intrusive method to add random variables to a probabilistic design code,” Journal of Finite Element Analysis and Design, 46, 280-287.

 

2009
Chan, K.S., et al. (2009). “Residual stress profiles for mitigating fretting fatigue in gas turbine engine disks,” International Journal of Fatigue, 32, pp. 815-823.
Gorelik, M., et al. (2009). “Role of quantitative NDE techniques in probabilistic design and life management of gas turbine components – part II,” Paper GT2009-60358, Proceedings of the 54th ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Orlando, FL, June 8-12, 2009.
McClung, R. C., et al. (2009). “A New Computational Framework for Fatigue Crack Growth Analysis of Components,” Proceedings of the 12th International Conference on Fracture (ICF12), Ottawa, Canada, July 2009.

 

                         

2008
Enright, M.P., et al. (2008). “Probabilistic treatment of aircraft engine usage,” Paper GT2008-51393, Proceedings of the 53rd ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Berlin, Germany, June 9-13, 2008.
Millwater, H.R. et al. (2008). “Simulation of recurring automated inspections on probability-of-fracture estimates,” Structural Health Monitoring, 7, pp. 293-307.
Moody, J.P., et al. (2008). “Adaptive risk refinement methodology for gas turbine engine rotor disks,” Paper AIAA-2008-2224, 49th AIAA Structures, Structural Dynamics, and Materials Conference, AIAA, Schaumburg, IL, April 7-10, 2008.

 

2007
Enright, M.P., and Hudak, S.J. (2007). “Probabilistic mission identification of aircraft engine usage using nonparametric density estimation techniques,” Paper GT2007-27176, Proceedings of the 52nd ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Montreal, Canada, May 14-17, 2007.
Enright, M.P., et al. (2007). “Efficient integration of sampling-based spatial conditional failure joint probability densities”, Paper AIAA-2007-1938, 48th AIAA Structures, Structural Dynamics, and Materials Conference, AIAA, Honolulu, HI, April 23-36, 2007.
Millwater, H.R., et al. (2007). “A convergent zone-refinement method for risk assessment of gas turbine disks subject to low-frequency metallurgical defects,” Journal of Engineering for Gas Turbines and Power, ASME, 129, pp. 827-835.
Moody, J.P., et al. (2007). “Automatic risk assessment methodology for gas turbine engines employing adaptive recursive triangulation,” Paper GT2007-27576, Proceedings of the 52nd ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Montreal, Canada, May 14-17, 2007.

 

 

 

2006
Enright, M.P., et al. (2006). “Application of nonparametric methods to rainflow stress density estimation of gas turbine engine usage,” Paper GT2006-90780, Proceedings of the 51st ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Barcelona, Spain, May 8-11, 2006.
Enright, M.P., et al. (2006). “Nonparametric risk assessment of gas turbine engine usage”, Paper AIAA-2006-49448, 47th AIAA Structures, Structural Dynamics, and Materials Conference, AIAA, Newport, RI, May 1-4, 2006.
Millwater, H.R. and Osborn, R.W. (2006).  "Probabilistic sensitivities for fatigue analysis of turbine engine disks," International Journal of Rotating Machinery, Volume 2006, pp. 1-12.
Enright, M.P. and Huyse, L. (2006). "Methodology for probabilistic life prediction of multiple anomaly materials," AIAA Journal, 44(4), pp. 787-793.
Enright, M.P. et al. (2006). "Adaptive optimal sampling methodology for reliability prediction of series systems," AIAA Journal, 44(3), pp. 523-528.
Enright, M.P., et al. (2006). “Application of probabilistic fracture mechanics to prognosis of aircraft engine components,” AIAA Journal, AIAA, 44 (2), pp. 311-316.
Huyse, L., and Enright, M.P. (2006). “Efficient conditional failure analysis - application to an aircraft engine component,” Structure and Infrastructure Engineering, Taylor & Francis, 2(3), pp. 221-230.
2005
Enright, M.P. et al. (2005). "Fracture mechanics-based probabilistic life prediction of components with large numbers of inherent material anomalies," Proceedings Ninth International Conference on Structural Safety and Reliability (ICOSSAR), Rome, Italy, June 19-23, pp. 601-607.
Enright, M.P. et al. (2005). "A probabilistic framework for risk prediction of engine components with inherent and induced material anomalies," Proceedings 50th ASME International Gas Turbine & Aeroengine Technical Congress, Reno, NV, June 6-9, Paper GT2005-68982.
Jameel, A. (2005). "Surface damage tolerance analysis of a gas turbine engine rotor", Proceedings 50th ASME International Gas Turbine & Aeroengine Technical Congress, Reno, NV, June 6-9, Paper GT2005-68760.
Enright, M.P. et al. (2005). "Methodology for probabilistic life prediction of multiple anomaly materials," Proceedings of the 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Austin, TX, April 18-21.
Momin, F.N. et al. (2005). "Application of the generalized conditional expectation method for enhancing probabilistic fatigue design code," Proceedings of the 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Austin, TX, April 18-21.
Osborn, W. et al. (2005). "Application of probabilistic sensitivities to probabilistic fatigue analysis of gas turbine engine disks," Proceedings of the 46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Austin, TX, April 18-21.
2004
Momin, F.N. et al. (2004). "Application of a Conditional Expectation Response Surface Approach to Probabilistic Fatigue," 9th ASCE Speciality Conference on Probabilistic Mechanics and Structural Reliability, ASCE, Albuquerque, NM, July, ASCE Paper PMC2004-204.
McClung, R.C. et al. (2004). "Efficient fracture design for complex turbine engine components," Proceedings, 49th ASME International Gas Turbine & Aeroengine Technical Congress, ASME, Vienna, Austria, June 14-17, ASME Paper GT2004-53323.
Enright, M.P. et al. (2004). "Adaptive Optimal Sampling Methodology for Zone-Based Probabilistic Life Prediction," Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, CA, April 19-22.
Millwater, H.R. et al. (2004). "Application of Parallel Processing to Probabilistic Fracture Mechanics Analysis of Gas Turbine Disks," Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, CA, April 19-22.
Waldhart, C. et al. (2004). "Methodology for Application of 3-D Stresses to Surface Damage-Based Risk Assessment,"Proceedings of the 45th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Palm Springs, CA, April 19-22.
Enright, M.P. et al. (2004). "Probabilistic methodology for life prediction of aircraft turbine rotors," Proceedings, 9th Biennial ASCE Aerospace Division International Conference (Earth and Space), Houston, TX, March 7-10.
Leverant, G.R. et al. (2004). "A new tool for design and certification of aircraft turbine rotors," Journal of Engineering of Gas Turbines and Power, Volume 126, pp. 155-159.
2003
McClung R.C. et al. (2003). "The DARWIN® Computer Program for Probabilistic Damage Tolerance Analysis of Engine Rotors," ADF Aircraft Engine Symposium, Melbourne, Australia, October 29-30, 2003.
Enright, M.P. et al. (2003). "Probabilistic surface damage tolerance assessment of aircraft turbine rotors," Proceedings of the 48th ASME International Gas Turbine & Aeroengine Technical Congress, Atlanta, GA, June 16-19.
Huyse, L. et al. (2003). "Efficient Statistical Analysis of Failure Risk in Engine Rotor Disks Using Importance Sampling Techniques," Proceedings of the 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Norfolk, VA, April 7-10.
Millwater, H.R. et al. (2003). "Application of an XML-Based Database for Probabilistic Analysis," Proceedings of the 44th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Norfolk, VA, April 7-10.
Jameel, A., Lehmann, D., Tschopp, J., and Dubke, J. (2003). "Application of DARWIN to evaluate risk of fracture due to material anomalies in gas turbine engines," 6th Annual FAA/Air Force NASA/Navy Workshop on the Application of Probabilistic Methods to Gas Turbine Engines, Solomon's Island, MD, March 16-20, 2003.
Enright, M.P. et al. (2003). "Summary of New DARWIN Capabilities for Surface Damage Tolerance Assessment and Related Enhancements," 6th Annual FAA/Air Force NASA/Navy Workshop on the Application of Probabilistic Methods to Gas Turbine Engines, Solomon's Island, MD, March 16-20, 2003.
Huyse, L. et al. (2003). "Recent Probabilistic Computational Efficiency Enhancements in DARWIN," 6th Annual FAA/Air Force NASA/Navy Workshop on the Application of Probabilistic Methods to Gas Turbine Engines, Solomon's Island, MD, March 16-20, 2003.
McClung, R.C (2003). "An Executive Update on the Turbine Rotor Material Design (TRMD) Program," 6th Annual FAA/Air Force NASA/Navy Workshop on the Application of Probabilistic Methods to Gas Turbine Engines, Solomon's Island, MD, March 16-20.
Laz, P.J. et al. (2003). "Effect of CTE-induced residual stresses around hard alpha particles on fatigue crack growth in Ti-6Al-4V," Fatigue and Fracture of Engineering Materials and Structures Vol. 26, No. 12, pp. 1145-1157.
2002
*Leverant, G.R. et al. (2002). "A new tool for design and certification of aircraft turbine titanium rotors," Proceedings of the 47th ASME International Gas Turbine & Aeroengine Technical Congress, Amsterdam, The Netherlands, June 3-6.
Wu, Y.-T. et al. (2002). "Probabilistic Methods for Design Assessment of Reliability with Inspection," AIAA Journal, Volume 40, Number 5, pages 937-946.
Enright, M.P. et al. (2002). "Optimal sampling techniques for zone-based probabilistic fatigue life prediction," Proceedings of the 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Non-Deterministic Approaches Forum, Denver, CO, April 22-25.
Millwater, H.R. et al. (2002). "A convergent probabilistic technique for risk assessment of gas turbine disks subject to metallurgical defects," Proceedings of the 43rd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, Non-Deterministic Approaches Forum, Denver, CO, April 22-25.
2001
Leverant, G.R. et al. (2001). "Update on the FAA turbine rotor material design program," 5th Annual FAA/Air Force/NASA/Navy Workshop on the Application of Probabilistic Methods for Gas Turbine Engines, Westlake, Ohio, June 11-13.
McClung, R.C. et al. (2001). "Crack nucleation and growth data and modeling," 5th Annual FAA/Air Force/NASA/Navy Workshop on the Application of Probabilistic Methods for Gas Turbine Engines, Westlake, Ohio, June 11-13.
Millwater, H.R. et al. (2001). "DARWIN enhancements for probabilistic risk assessment," 5th Annual FAA/Air Force/NASA/Navy Workshop on the Application of Probabilistic Methods for Gas Turbine Engines, Westlake, Ohio, June 11-13.
McClung, R.C. et al. (2001). "A probabilistic damage tolerance analysis computer program for engine rotor integrity," AHS Forum 57, Special Session on Engine Life Management: Addressing Fleet Risk With Innovative Approaches, Washington, DC, May 9-11.
2000
McKeighan, P.C. et al. (2000). "Sensing Crack Nucleation and Growth in Hard Alpha Defects Embedded in Ti-6AI-4V Alloy", Nontraditional Methods of Sensing Stress, Strain, and Damage in Materials and Structures: Second Volume, ASTM STP 1323, G.F. Lucas, P.C. McKeighan, and J.S. Ransom, Eds., American Society for Testing and Materials, West Conshohocken, PA, 2000.
Chan, K.S. et al. (2000). "Constitutive Properties of Hard-Alpha Titanium," Metallurgical and Materials Transactions, Volume 31A, December 2000. Note: this file is large (11.5 MB)
Wu, Y.-T. (Justin) et al. (2000). "Efficient and accurate methods for probabilistic analysis of titanium rotors," Proceedings of the 8th ASCE Joint Specialty Conference on Probabilistic Mechanics and Structural Reliability, Notre Dame, IN, July 24-26.
*Millwater, H.R. et al. (2000). "A probabilistically-based damage tolerance analysis computer program for hard alpha anomalies in titanium rotors," Proceedings of the 45th ASME International Gas Turbine & Aeroengine Technical Congress, Munich, Germany, May 8-10.
Wu, Y.-T. (Justin) et al. (2000). "Probabilistic methods for design assessment of reliability with inspection (DARWIN)," Proceedings, 41st Structures, Structural Dynamics, and Materials Conference, Atlanta, GA, April 3-6.
Enright, M.P. et al. (2000). "Probabilistic fatigue life sensitivity analysis of titanium rotors," Proceedings, 41st Structures, Structural Dynamics, and Materials Conference, Atlanta, GA, April 3-6.

 

 

1999
McClung, R.C. (1999). "Fracture mechanics analysis in DARWIN," 4th Annual FAA/USAF Workshop, Application of Probabilistic Methods to Gas Turbine Engines, Jacksonville, FL, December 7-8.
Wu, Y.-T. (Justin), et al. (1999). "Probabilistic methods for DARWIN," 4th Annual FAA/USAF Workshop, Application of Probabilistic Methods to Gas Turbine Engines, Jacksonville, FL, December 7-8.
Millwater, H.R. et al. (1999). "A probabilistically-based damage tolerance analysis computer program for hard alpha defects in titanium rotors," USAF Structural Integrity Program Conference, San Antonio, TX, Nov. 30.
McClung, R.C. et al. (1999). "Development of a probabilistic design system for gas turbine rotor inspection," Fatigue '99 The Seventh International Fatigue Conference, Beijing, China, June 8-12, 2655-2660.
McClung, R.C. et al. (1999). "Fatigue crack growth of titanium rotor alloys in vacuum and air", Fatigue Behavior of Titanium Alloys, R. Boyer, D. Eylon, G. Lutjering eds., The Minerals, Metals & Materials Society, 211-218.
McKeighan, P.C. et al. (1999). "Characterizing the cracking behavior of hard alpha defects in rotor grade Ti-6-4 Alloy", Fatigue Behavior of Titanium Alloys, R.R. Boyer, D. Eylon, and G. Lutjering, eds., The Minerals, Metals & Materials Society.

 

 

1997
*Leverant, G.R. et al. (1997). "A probabilistic approach to aircraft turbine rotor material design," ASME International Gas Turbine & Aeroengine Congress ,Paper 97-GT-22.
Aerospace Industries Association Rotor Integrity Sub-Committee(1997). " The development of anomaly distributions for aircraft engine titanium disk alloys", 38th AIAA/ASME/ASCE/AHS/ASC SDM Conference, 2543-2553.
RISC White Paper on AC33.14 *Copyright ASME. For further information on ASME publications, visit the ASME web site.
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