Residual stress effect on fatigue striation spacing in a cold-worked rivet hole

• Author(s): Matos, P. F. P. de ; Moreira, P. M. G. P. ; Pina, J. C. P. ; Dias, A. M. ; Castro, P. M. S. T. de
• Date: 2004
• Persistent ID: http://hdl.handle.net/10316/4437
• Origin: Estudo Geral - Universidade de Coimbra
• Subject(s): X-ray diffraction; Residual stress; Finite element analysis; Scanning electron microscopy; Striation spacing
• Document Type: Article
• Language: English

Description

The residual stress effect due to cold-working is studied in relation to fatigue striation spacing. Cold-working introduces a compressive stress field around the hole reducing the tendency for fatigue cracks to initiate and grow under cyclic mechanical loading. It is known that fatigue lifetime assessment requires a detailed knowledge of the residual stress profile. X-ray diffraction and 3D finite element analysis (FEA) can be used to determine the residual stress profile. Scanning electron microscopy (SEM) measurements were performed for measuring the striation spacing. http://www.sciencedirect.com/science/article/B6V55-4DCMMB3-1/1/1026db3943b96c7003d55ee5540509f3