metal fatigueDeterioration and progressive cracking of metal parts caused by repeated and relatively low stresses. Imperfections in crystal grains, which often occur at notches, screw threads, welding defects, etc., accumulate after numerous cycles in which a small inelastic strain is applied, often leading to eventual failure. Fatigue failure is guarded against by careful design. Related category PROPERTIES OF MATTERAlso on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |