Measurement of crack opening stresses and crack closure stress profiles from heat generation in vibrating cracks | Zendy

Jeremy Renshaw | Zendy; Stephen D. Holland | Zendy; R. B. Thompson | Zendy

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Measurement of crack opening stresses and crack closure stress profiles from heat generation in vibrating cracks

Author(s) -

Jeremy Renshaw,

Stephen D. Holland,

R. B. Thompson

Publication year - 2008

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.2976310

Subject(s) - crack closure , materials science , crack tip opening displacement , rubbing , crack growth resistance curve , closure (psychology) , stress (linguistics) , heat generation , mechanics , composite material , structural engineering , fracture mechanics , thermodynamics , engineering , linguistics , philosophy , physics , economics , market economy

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.

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