fatigue test

Fatigue test            The metal fatigue test is to determine the fatigue performance criterion of metal samples or simulated parts under various environments and to study the fracture process.            There are many kinds of metal fatigue tests, which can be divided into high cycle fatigue, low cycle fatigue, thermal fatigue, impact fatigue, corrosion fatigue, contact fatigue, acoustic fatigue, vacuum fatigue, high temperature fatigue, normal temperature fatigue, low temperature fatigue, rotating bending fatigue, plane bending fatigue, axial loading fatigue, torsion fatigue, composite stress fatigue, etc. The appropriate fatigue test method should be selected according to the service (working) conditions of metal parts, and the test conditions should be as close to the service conditions as possible. The purpose of metal fatigue test is to determine the fatigue strength (resistance) of metal. Due to different test conditions, the criteria (indicators) to characterize the fatigue strength of metal are also different.