Neville Sachs, P.E.
Applied Technical Services, Inc.,
Syracuse, NY

This technical paper, presented at the 2014 EASA Convention, will help you understand how and why shafts and fasteners fail. This paper covers:

• Discussion of material properties typically found in motor shafts, machine shafts and common fasteners
• Differentiating between overload and fatigue failures
• Understanding and identifying the difference between ductile and brittle materials, and how their fracture appearances differ
• A detailed explanation of how to identify fatigue failures, including the rate and direction of force application and the effect of stress concentrations
• Examples of several failure analyses

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