Inert strength

In fracture mechanics, the breaking strength of a material under inert conditions and with neglected subcritical crack growth is referred to as inert strength (inert = Latin for inert, uninvolved) . ${\ displaystyle \ sigma _ {IC}}$

It represents an upper limit of the breaking strength depending on the loading speed , at which subcritical crack growth can be excluded, since the breaking process takes place faster than the crack growth. ${\ displaystyle \ sigma _ {B}}$

On the other hand, at low loading speeds (“the tension is slowly exerted and / or increased on the material ”) due to inhomogeneities and structural defects in the material, the said cracks form, the growth of which limits the strength to values below . ${\ displaystyle \ sigma}$ ${\ displaystyle \ sigma _ {IC}}$

In order to determine the service life dependency of the fracture probability, the inert strength is also used in the form of the Weibull distribution of the same.

Individual evidence

↑ Joachim Rösler, Harald Harders, Martin Bäker: Mechanical behavior of the materials . Springer DE, 2012, ISBN 3-8348-1818-6 , pp. 235 ( limited preview in Google Book Search).
↑ Horst-Dieter Tietz: Technical ceramics .: Structure, properties, production, processing, testing. Springer DE, 1997, ISBN 3-642-57902-7 , pp. 50 ( limited preview in Google Book search).

[Joachim_Rösler,_Harald_Harders,_Martin_Bäker-1] Joachim Rösler, Harald Harders, Martin Bäker: Mechanical behavior of the materials . Springer DE, 2012, ISBN 3-8348-1818-6 , pp. 235 ( limited preview in Google Book Search).

[Horst-Dieter_Tietz-2] Horst-Dieter Tietz: Technical ceramics .: Structure, properties, production, processing, testing. Springer DE, 1997, ISBN 3-642-57902-7 , pp. 50 ( limited preview in Google Book search).