Environmental simulation device for high/low temperature fatigue property testing

Abstract

An environmental simulation device for high / low temperature fatigue property testing is composed of a high-temperature-resisting multi-step circular shaft adapter, a temperature control water cooler, a high-temperature-resisting five-hole slot type clamp, a positioning pin, a bolt, an environment box and a liquid nitrogen container, wherein the high-temperature-resisting multi-step circular shaft adapter is connected with the temperature control water cooler through a water inlet pipe and a water outlet pipe, one end of the high-temperature-resisting five-hole slot type clamp is installed on the adapter, and the other end of the high-temperature-resisting five-hole slot type clamp positions a sample through the positioning pin and is fixedly connected with the sample through the bolt with threads; the high-temperature-resisting five-hole slot type clamp and the sample clamped by the high-temperature-resisting five-hole slot type clamp are wrapped in the environment box, and the liquid nitrogen container is connected with the environment box. Through reasonable and ingenious matching and connection of sub-systems, high / low temperature environment simulation for fatigue property testing can be achieved easily, practically and accurately, and technical support and means are provided for high / low temperature fatigue property testing.

Description

technical field [0001] The invention relates to an environment simulation device for high / low temperature fatigue performance testing, which belongs to the technical field of testing and testing. Background technique [0002] During the use of engineering materials or structures, fatigue cracks will occur due to alternating loads, and damage will occur when the damage accumulation exceeds the allowable limit, which will affect the safety of materials or structures. Engineering materials and structures are often used in cold or hot environments. High / low temperature environments will affect the fatigue properties of materials. Therefore, in order to ensure safety, it is necessary to measure the fatigue properties of high / low temperature environments. The difficulty of high / low temperature fatigue performance testing technology lies in environmental simulation. At present, the environmental simulation technology that meets the requirements of high / low temperature fatigue perfo...

AI Technical Summary

Problems solved by technology

The difficulty of high / low temperature fatigue performance testing technology lies in environmental simulation. At present, the environmental simulation technology that meets the requirements of high / low temperature fatigue performance testing is not yet mature at home and abroad. Therefore, a method for high / low temperature fatigue performance testing has been invented. The environmental simulation device consists of a high-temperature-resistant multi-step circular shaft conversion joint, a temperature-controlled water chiller, a high-temperature-resistant five-hole groove fixture, positioning pins and bolts, an environmental box and a liquid nitrogen tank, etc., which can be easily, practically and accurately Realized the simulation of fatigue performance test environment, and provided technical support and means for high / low temperature fatigue performance test

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