Stress overview, Glossary and nomenclature – Spicer Drive Axles Failure Analysis Service Manual User Manual
Page 10
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Glossary and Nomenclature
9
Stress Overview
Most failures involve some form of mechanical stress. Even when the initial or basic cause of the failure results from a problem
such as excessive heat or improper lubrication, the part becomes weakened and more subject to stress failure.
This page illustrates four basic forms of mechanical stress: torsion, tensile, shear, and compression. In the Failure Analysis sec-
tion, parts photographs show the resulting failures and the patterns characteristic of the different stresses.
Torsion Stress:
Tensile Stress:
Shear Stress:
Compression Stress:
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