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Media type:
E-Article
Title:
Observations on acoustic emissions from a line contact compressed into the plastic region
Contributor:
Fuentes, Ramon;
Howard, Thomas P;
Marshall, Matthew B;
Cross, Elizabeth J;
Dwyer-Joyce, Rob S
imprint:
SAGE Publications, 2016
Published in:Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
Language:
English
DOI:
10.1177/1350650116638590
ISSN:
1350-6501;
2041-305X
Origination:
Footnote:
Description:
<jats:p> Some observations from acoustic emissions recorded during a yield test of a bearing raceway compressed into plasticity using a rolling element are presented. The general objective of the study is to establish whether there is enough evidence of the onset of sub-surface plasticity in the acoustic emissions signature. It is discussed here how acoustic emissions monitoring during compression could indicate the onset of subsurface plasticity as a precursor to damage propagation to the surface. Some comparisons are drawn between the acoustic emissions activity levels and time-frequency response during elastic deformation and at yield loads. </jats:p>