Experimental Study on Heat Production Mechanism during Fatigue Process

The traditional method of determining the fatigue test of pilot fatigue limit at the long cycle, the need for more samples, the high cost of a fatigue test pilot in a difficult issues. The use of text with accurate, rapid and convenient, low-cost advantages of the thermal imager Determination of a wide range of load condition of fatigue limit of Q235, and different sticky and / or plastic effects of heat-led mechanism. Materials in the course of fatigue, fatigue limit under the load caused by temperature fluctuations from Heat elastic effect, the temperature rise from non-bomb material, plastic effect (such as the stickiness effect), and fatigue limit on the total load from plastic work, have led to fatigue damage, making a downward adjustment mechanism of temperature rise. Through the test data The analysis calculated the stickiness of the material factor, given the use of plastic determine the starting point of energy consumption