A critique on evaluating fatigue crack propagation properties using miniature specimens
Journal
Advanced Materials Research
Journal Volume
146-147
Pages
646-649
Date Issued
2011
Author(s)
Shin, C.-S.
Abstract
There are situations where baseline fatigue crack propagation (FCP) data are needed but the available material for its evaluation is far from enough to fabricate full sized standard specimens. Miniature specimen testing techniques have been proposed but published data seems to be slightly but consistently slower under the same stress intensity than that from standard specimen results. In this work, an aluminum alloy and a steel, which have vastly different mechanical behaviors, are used to generate different stress states and premature crack closure to allow the validity of miniature specimen FCP data to be critically examined.
Type
conference paper