Non-contact thermal shock high-temperature mechanical test device

Abstract

The invention discloses a non-contact thermal shock high-temperature mechanical test device, and belongs to the field of high-temperature mechanical performance test. The device comprises a base, a mechanical test module, a middle cross beam, an out-cavity upper clamp and a spherical cavity, wherein the spherical cavity is fixed on a guiderail through a cavity bracket; an upper pull rod, an uppervacuum corrugated pipe, a vacuum gauge, an infrared lamp heating module, a laser heating module, a sample injection door with an observation window, an infrared temperature measurement module, a dynamic test module, a vacuum air exhaust module, an air intake module, a lower pull rod and a lower vacuum corrugated pipe are arranged on the spherical cavity; and an extensometer, an in-cavity upper clamp, an in-cavity lower clamp and a test piece are arranged in the spherical cavity. The device is capable of providing freely switched thermal load environment, vacuum or inert gas environment and laser thermal shock environment, is convenient to mount / dismount, has high flexibility and sealing property, and is capable of realizing dynamic and multi-angle observation.

Description

technical field [0001] The invention belongs to the field of experimental equipment for high-temperature materials, and specifically relates to a non-contact thermal shock high-temperature mechanical testing device, which can realize testing environments such as laser shock, high temperature, vacuum, and inert gas. Background technique [0002] With the development of strategic technologies such as hypersonic spacecraft and high thrust-to-weight ratio engines, the study of mechanical problems of material structures in extreme high-temperature environments (especially high-temperature oxidation environments above 2000 °C) has raised a series of challenging problems that need to be urgently solved. The high-temperature three-dimensional stress state, micro-nano structure evolution, and dynamic behavior of the atom-electronic system of materials under extreme high-temperature conditions all have a crucial impact on the service performance of the structure and the damage resistan...

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Problems solved by technology

[0004] Comprehensive analysis of the above-mentioned devices, the above existing detection devices have the following deficiencies: 1) the above-mentioned devices are heated by resistance furnaces, graphite furnaces, etc., the heating area is large, and the power consumption is high, and the experimental fixture is arranged in the high-temperature zone, so material selection and design are difficult ;Using high-temperature induction furnace heating can only heat high-conductivity samples, and the interchangeability and adaptability of induction parts are poor, so it is not suitable for application on some specimens and composite materials with complex shapes; 2) It is difficult to carry out simultaneous mechanical testing Test experiments such as thermal shock, thermal fatigue, and laser damage; 3) For experiments such as fracture, only incisions and prefabricated cracks can only be pre-processed, and local controllable damage cannot be introduced into the test; 4) The cavity of the heating part is large and sealed, so that the observation window Small, difficult to achieve multi-angle real-time observation

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