Strength criterion

In solid mechanics , a strength criterion (see also breakage criterion ; for fiber-plastic composites : failure criterion ) indicates when and under what conditions the strength of a solid is exceeded and it fails .

A strength criterion is in the engineering evaluation of the mechanical load limit of a material represents This evaluation formulas are used:. Either be multi-axial loads each in relation to mechanical strength characteristics set or first on a single-axis reference value ( reference voltage ) is reduced. A strength criterion is closely related to the associated strength hypothesis .

A reserve factor is usually obtained from a strength criterion .