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Fatigue Failure

Sheet Metal Fatigue Failure: Root Causes and Prevention

Sheet metal fatigue failure is the progressive cracking of a thin metal part caused by repeated cyclic loading or vibration, even when stresses remain well below the material’s yield strength. Cracks almost exclusively initiate at manufactured stress concentrations like cut edges, tight bends, or weld toes.

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Sheet Metal Bending Tolerances

Sheet Metal Bending Tolerances: Engineering Guide

A bending tolerance specifies how much deviation is acceptable in a bend angle or flange length after forming. For instance, a 90° design may result in 89° or 91° once formed. That ±1° difference is the tolerance range. Well-defined tolerances prevent costly mismatches between parts.

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