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Fatigue crack growth rate in thick plates of 7010
1999 (English)In: Fatigue '99: proceedings of the Seventh International Fatigue Congress, 8-12 June 1999, Beijing, China, Beijing: Higher Education Press , 1999, p. 445-450Conference paper, Published paper (Other academic)
Abstract [en]

A mapping of fatigue crack growth rates in thick plates of a high strength aluminium alloy has been done. The plate thicknesses investigated was 100, 150 and 200 mm. In this work, material from near edge at near surface and mid-thickness has been investigated. Measurements of crack length has been performed using DC potential drop. Cyclic condensation is used in order to reveal crack growth behaviour for stage I and the earlier part of stage II crack growth. Influence of crack closure, crack branching and slow growing side cracks on fatigue crack growth rate of S-L and L-T oriented specimens are discussed. Variation of difference in growth rate in the upper part of the stage II growth between near surface and mid thickness positioned L-T specimens are found to vary with plate thickness.

Place, publisher, year, edition, pages
Beijing: Higher Education Press , 1999. p. 445-450
Keywords [en]
Aluminum base alloys; Mechanical properties; Fatigue failure; Crack propagation; Al Zn Mg Cu alloys
Identifiers
URN: urn:nbn:se:hj:diva-5198ISBN: 9787040075823 (print)OAI: oai:DiVA.org:hj-5198DiVA, id: diva2:36018
Available from: 2008-01-09 Created: 2008-01-09 Last updated: 2017-12-12Bibliographically approved

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Andersson, Nils-Eric

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