Greg Thorwald uses FEA for structural, fracture, and fatigue crack growth assessments in a variety of fitness-for-service consulting projects. He is the lead developer of the FEACrack software, an automated parametric 3D crack mesh generation program that creases FEA input files used to compute crack front stress intensity and J-integral values needed for assessments. Greg earned a Ph.D. in aerospace engineering from the University of Colorado.