The investigation of internal stress fields by stress reduction experiments

The decomposition of stress applied on a material into two distinct parts called effective and internal stresses is often assumed but rarely experimentally measured. The strain-dip test technique, used occasionally in creep testing, is employed here for the investigation of the two stress components...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2004-12, Vol.387, p.72-75
Main Authors: Kruml, T., Coddet, O., Martin, J.L.
Format: Article
Language:English
Subjects:
Compression test
Cottrell–Stokes law
Dip test
Effective stress
Internal stress
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Summary:The decomposition of stress applied on a material into two distinct parts called effective and internal stresses is often assumed but rarely experimentally measured. The strain-dip test technique, used occasionally in creep testing, is employed here for the investigation of the two stress components under conditions of constant strain-rate compression tests for four different single crystalline materials. The Cottrell–Stokes law, i.e. the linear dependence between applied and effective stresses, is verified in the case of metallic specimens while the effective stress depends only slightly on the applied stress in the case of germanium.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2004.01.066