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High cycle fatigue testing

Material testing where fatigue resistance is determined by rotating the material with a large number of cycles, in a machine while it is loaded with a small force.

Illustration of High cycle fatigue testing

The process

The material [1] to be tested is placed in a chuck and rotated usually at 10,000 cycles. This is done while the material is loaded with a load [2], which causes the material to eventually elastically deform and the occurrence of failure is inevitable. The material fatigue strength can then be determined by performing several tests and analyzing the SN curve created.