ASTM D7791 Test Guide: Fatigue Testing for Plastics
FatigueAlways adjust the cyclic frequency downward if the infrared sensor tracks a surface temperature increase exceeding 2°C over the ambient…
Testing Applications
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ASTM E466 Test Guide: Fatigue Testing for Metals
FatigueThe active gauge area must be polished longitudinally to a mirror finish (down to 0.2-micron roughness) to eliminate circumferential machining…