High Cycle Fatigue (HCF)

Fatigue occurs when a material is subjected to repeated loading and unloading. It causes progressive localised structural damage, resulting in the material fracturing prematurely, below the expected ultimate tensile stress or yield stress limits. Fatigue lives of greater than 100,000 cycles are defined as High Cycle Fatigue.
High cycle fatigue testing at SMaRT is primarily conducted on Vibrophore test machines, which use magnetic resonance to deliver low amplitude, high frequency testing within the elastic region of the material. Typically, testing is conducted between ambient and 900°C, although some capacity for higher temperatures is available. SMaRT currently uses a suite of test machines that provide operation across loads ranging from 1kN to 100kN.