Metals Fatigue Testing at High Temperatures

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Metals Fatigue Testing at High Temperatures

Applications in which materials in structures undergo large changes in temperatures, which results in larges forces between the components should be tested to determine high temperature low cycle fatigue characteristics. Historically load and strain controlled fatigue tests require servo hydraulic test machine technology. Recent test machine innovations make it possible to perform high force static tensile and compression tests and fatigue testing with all electric dynamic actuators. All electric machines are not only less expensive to purchase but also to operate in the long term. They are especially productive in applications that are 15 hz and lower and load more than 50 kN (11250 lb). Both ASTM and ISO have standard test methods for strain and load control fatigue testing. For load control refer to ASTM E466 or ISO 1099.