Analysis of the effect of cold-working of rivet holes on the fatigue life of an aluminum alloy

• Type: Article in International Scientific Journal
• Date: 2007

Authors

Paulo Matos (Author) FEUP; A J McEvily (Author) Other; Pedro Moreira (Author) FEUP; Paulo Tavares De Castro (Author) FEUP

Journal

Title: International Journal of Fatigue

Vol. 29 No. 3

Pages: 575-586

ISSN: 0142-1123

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 42 Citations

Scopus - 69 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

CORDIS: Technological sciences > Engineering > Aerospace engineering

Other information

Authenticus ID: P-004-BG2

DOI: 10.1016/j.ijfatigue.2006.04.004

Abstract (EN): An experimental and analytical program was carried out to assess the effect of cold-working by hole expansion on the fatigue life of Alclad 2024-T3 aluminium alloy. The magnitude of the residual stresses introduced into the specimens due to cold expansion was evaluated by an X-ray diffraction procedure. Specimens containing non-cold-worked and cold-worked holes were tested under cyclic loading at an R-ratio of 0.1. The rates of fatigue crack propagation were determined by measurement of striation spacing. A main outcome of the present work was the determination of the crack-opening stress intensity as a function of the range of the stress intensity factor. For the cold-worked specimens an inverse methodology was adopted to estimate the crack-opening stress intensity as influenced by the residual stress field. Finally, a crack growth model was used to provide a correlation with the experimental fatigue lifetimes.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12