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Failure due to semielliptical surface cracks under arbitrary stress distributions
Author(s) -
Fett
Publication year - 2000
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1046/j.1460-2695.2000.00277.x
Subject(s) - stress intensity factor , thermal shock , exponential function , materials science , stress (linguistics) , constant (computer programming) , weight function , shock (circulatory) , mechanics , structural engineering , thermal , fracture mechanics , composite material , mathematics , mathematical analysis , thermodynamics , physics , engineering , medicine , linguistics , philosophy , computer science , programming language
A procedure is described that is based on the two‐dimensional weight function equation of Rice. This enables one to determine the equilibrium semiellipses characterized by a constant stress intensity factor along the crack‐tip line for any stress distribution. The applicability is explained for the special case of thermal stresses caused by a thermal shock. Local stress intensity factors are estimated for the same stresses by using solutions for exponential stress distributions. A comparison of the two methods showed good agreement.