George Antaki, P.E., Becht Engineering, is a Fellow of ASME, with over 45 years of experience in pressure equipment. He is an ASME Fellow, internationally recognized for his expertise in design, analysis, and fitness-for-service evaluation of pressure equipment and piping systems. He is past vice –chair of the joint API-ASME Committee on Fitness-for-Service, member and past-chair of ASME B31 Mechanical Design Committee, Chairman of ASME III Working Group Piping Design, member of the ASME III Subgroup Component Design, and ASME Operation and Maintenance Subgroup Piping, and past member of the ASME PCC-2 Repair Committee. He is the author of three textbooks on the subject of pressure equipment design and integrity evaluation, including Fitness-for-Service for Piping, Vessels, and Tanks. Mr. Antaki earned his degree in Nuclear Engineering from the University of Liege, Belgium in 1975, and his Master’s degree in Mechanical Engineering from Carnegie Mellon University in 1985.
Gregory Brown, Ph.D., is the principal and owner of Blue Ring Engineering. He is a current voting member of the ASME/API Joint Committee on Fitness-For-Service (API 579/ASME FFS-1). Dr. Brown currently performs computational mechanics and fitness-for-service assessments for a variety of industries using API 579, as well as supporting litigation and failure analysis. He also develops specialized software and methodologies for structural analysis and life assessment. Previously Dr. Brown was the Chief Engineer for TEAM/Quest Integrity.
Dr. Brown joined Dr. Ted Anderson in 2001 at Structural Reliability Technology, which later became part of the Quest Integrity Group. Prior to SRT, he developed algorithms to update industrial finite element models using experimental measurements and performed flutter analyses of F16 and F18 fighter aircraft. Dr. Anderson, Dr. Brown, and the engineers at Structural Reliability Technology performed much of the work that was incorporated into API 579.
Greg Thorwald, Ph.D., is a Principal Engineer in the Advanced Engineering Group at Quest Integrity in Boulder, Colorado. He joined Dr. Ted Anderson in 1996 at Structural Reliability Technology, which later became part of Quest Integrity. He earned a Ph.D. in aerospace engineering from the University of Colorado.
Dr. Thorwald helped contribute stress intensity solutions to the API 579/ASME FFS-1 Standard that are used in fracture mechanics assessments, and he is a member of the API/ASME joint committee. His consulting work focuses on structural analysis using finite element models, Fitness-for-Service assessments, software development, and training.
Dr. Thorwald helps develop and support the Signal Fitness-for-Service (FFS) software that performs the API 579 Fitness-for-Service calculations and assessments. He is the lead developer of the FEACrack software: a parametric 3D crack mesh generator and post processor used with finite element analysis solvers to compute stress intensity and J-integral solutions needed in fracture mechanics and fatigue crack propagation assessments.