StressCheck Tutorial: Computation of Kt and Crack Initiation Beta Factor for a 2D Notched Plate in Tension
Abstract: Modeling and analysis of a Planar specimen with a circular notch for a) stress concentration factor (Kt) computation and b) stress intensity factor (SIF) computation for an initial flaw size at the root of the circular notch. The SIF can then be converted to a beta factor for use in fatigue life calculations in other software tools.
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“Through the use of StressCheck® the A-10 Aircraft Structural Integrity Program’s (ASIP) Analysis Group is able to model more accurately the physics of fatigue crack propagation in critical aircraft structure. Through this tool we are able to model, analyze and predict failure of aircraft structure and then develop crucial inspection and maintenance planes to ensure the safety and sustainability of our nations warplanes. Without the analysis capability provided to us through StressCheck® we would not be able to provide accurate assessments of the A-10 structure to top USAF leadership.”
SWRI Research EngineerSouthwest Research Institute