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

• Autor(es): Matos, P. F. P. de ; Moreira, P. M. G. P. ; Pina, J. C. P. ; Dias, A. M. ; Castro, P. M. S. T. de
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/10316/4437
• Origem: Estudo Geral - Universidade de Coimbra
• Assunto(s): X-ray diffraction; Residual stress; Finite element analysis; Scanning electron microscopy; Striation spacing
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

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