Greg W. Brown, Ph.D., the Chief Engineer for TEAM Quest Integrity in the Advanced Engineering group based in Boulder Colorado. Dr. Brown joined Dr. Ted Anderson in 2001 at Structural Reliability Technology, which later became part of the Quest Integrity Group. Previously, 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. He currently performs computational mechanics and CFD analyses, specializing in litigation and failure analysis. His group performs Fitness-For-Service assessments for a variety of industries using API 579. He also develops specialized software and methodologies for structural analysis and life assessment.
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.