Experiment system for testing super-high temperature fatigue S-N curve of engine material

Abstract

The invention discloses an experiment system for testing a super-high temperature fatigue S-N curve of an engine material. The experiment system consists of a fatigue experiment machine, an upper test sample clamp, a lower test sample clamp, a cooling machine, a high-temperature furnace and a test sample, wherein the upper test sample clamp and the lower test sample clamp are in threaded connection with the test sample, and then uniform axial loading of the test sample is ensured; the upper test sample clamp and the lower test sample clamp are connected with the experiment machine; the cooling machine is connected with the upper test sample clamp and the lower test sample clamp through a water inlet tube and a water outlet tube; after being moved to a corresponding position, the high-temperature furnace mounted on the fatigue experiment machine wraps the test sample; after the equipment and the devices are integrally abutted, the fatigue experiment testing system of the engine material in a super-high temperature environment is formed. The experiment system is simple in structure, is convenient to operate and is applied to S-N testing on the engine material in the super-high temperature environment, and the testing result has significant engineering application values for structure fatigue service life evaluation.

Description

technical field [0001] The invention relates to a test system for testing the extremely high-temperature fatigue S-N curve of engine materials, which belongs to the technical field of test and test. Background technique [0002] Engineering materials and structures are subjected to alternating loads during use, and fatigue damage may occur. In order to ensure their safety, it is necessary to test their fatigue performance. After years of technological development, a complete fatigue performance testing standard has been formed; however, aviation Engine materials are often used in extremely high-temperature environments. Therefore, it is necessary to determine their fatigue S-N curves in extremely high-temperature environments for evaluating fatigue life. At present, the high-temperature fatigue performance testing of materials at home and abroad is mainly aimed at the creep performance and low-cycle fatigue performance testing at high temperatures of 350°-650°C, but for extr...

AI Technical Summary

Problems solved by technology

At present, the high-temperature fatigue performance test of materials at home and abroad is mainly aimed at the creep performance and low-cycle fatigue performance at high temperatures of 350° to 650°C, but for extremely high-temperature environments above 1000°C, there is still a lack of effective testing methods. Long-life fatigue performance test system

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