Fatigue crack growth testing using varying R-ratios
Paper i proceeding, 2010

A method to generate high temperature fatigue crack growth data for multiple R-ratios during a single or only a few tests for surface crack specimens was developed. Two tests were performed; one with 0≤R≤0.8 and one with -1≤R≤0. The crack growth was monitored using the potential drop method. It was shown that the results from tests with varying R-ratio gave very similar results to test with constant R. Fatigue crack growth predictions with data from varying R-test were generally slightly more conservative compared to predictions using data obtained from conventional testing. © 2010 Published by Elsevier Ltd.

Fatigue crack growth

Experimental techniques

R-ratio

Författare

Magnus Hörnqvist

T. Hansson

O. Clevfors

Procedia Engineering

1877-7058 (ISSN)

Vol. 2 1 155-161

Ämneskategorier

Maskinteknik

Materialteknik

DOI

10.1016/j.proeng.2010.03.017

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Senast uppdaterat

2018-10-15