Journal or Book Title
Applied Physics Letters
A method is described to measure crack opening stresses and closure stress profiles of a surface-breaking crack. Vibration is used to generate frictional heat by rubbing crack face asperities. Heat is generated at regions of contacting crack asperities under low, but nonzero, closure stress. Increasing force is applied to incrementally open the crack and measure the locations of crack heating as a function of applied load. Surface crack closure stresses are approximated from the heating locations as the load is varied and the crack opening stress is measured from the load required to fully open the crack and terminate heat generation
Copyright 2008 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
American Institute of Physics
November 14, 2012
Renshaw, Jeremy Blake; Holland, Stephen D.; and Thompson, R. Bruce, "Measurement of crack opening stresses and crack closure stress profiles from heat generation in vibrating cracks" (2008). Aerospace Engineering Publications. 3.