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A STATISTICAL MULTI‐SITE FATIGUE DAMAGE ANALYSIS MODEL
Author(s) -
Wang G. s.
Publication year - 1995
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 - 10.1111/j.1460-2695.1995.tb00160.x
Subject(s) - structural engineering , fatigue testing , forensic engineering , materials science , engineering
A statistical model has been developed to evaluate fatigue damage at multi‐sites in complex joints based on coupon test data and fracture mechanics methods. The model is similar to the USAF model, but modified by introducing a failure criterion and a probability of fatal crack occurrence to account for the multiple site damage phenomenon. The involvement of NDI techniques has been included in the model which can be used to evaluate the structural reliability, the detectability of fatigue damage (cracks), and the risk of failure based on NDI results taken from samples. A practical example is provided for rivet fasteners and bolted fasteners. It is shown that the model can he used even if it is based on conventional S‐N coupon experiments should further fractographic inspections be made for cracks on the broken surfaces of specimens.