Friction and wearing test device with tension and compression mechanisms and test method

Abstract

The present invention discloses a friction and wearing test device with tension and compression mechanisms and a test method, the friction and wearing test device includes a frame, a linear guide platform, a sample stage, a tensile base, a workpiece clamping mechanism, a reverse observation mechanism and a friction pair-ball fixture. Stress field is introduced into friction and wearing tests of a workpiece, the practicability and the reliability of the device can be verified by mechanical simulation and experimental simulation, and the friction and wearing test device has special significance to the problem of wear-out failure of a study material under the working condition of special tension and compression stress. At the same time, the reverse observation mechanism in the device can be used for on-line real-time monitoring of the wear of a transparent material in order to accurately grasp the dynamic process of the wear of the material. In addition, the device can obtain accurate deformation parameters of the experimental material, and quantitatively calculate the wear volume of the material on the basis of the deformation parameters. In friction and wear tests, the device and the test method can provide powerful theoretical and experimental support for analyzing and revealing the relevant quantitative relationship between material wear and damage evolution.

Description

technical field [0001] The invention relates to the field of friction and wear tests of materials, in particular to a friction and wear test device and a test method with a pulling and pressing mechanism. Background technique [0002] Evaluating the wear resistance of materials and judging their damage behavior through friction and wear testing machines are the basic means of tribology research. A large number of studies have shown that changes in the external environment during material wear will directly affect its damage behavior. The external environment covers many external factors including temperature, humidity, atmosphere, electric field, magnetic field, and stress field. Traditional friction and wear testing machines usually do not consider the influence of environmental factors on material wear. If active control of the external environment is required, additional devices must be added to the testing machine to achieve it. For example, the humidity and atmosphere...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this analysis method is that it cannot dynamically observe the changes in the state of the wear area in real time, for example, it cannot observe and judge the wear type of the sample in the test process, the way of surface damage and its transformation process, etc.

For transparent brittle materials, the process of material wear is usually accompanied by the formation of cracks. If only the wear morphology is observed after wear, the moment and size of crack initiation in the material cannot be accurately grasped, so that the material The damage mechanism is fairly limited

However, the existing wear testing machines are basically unable to solve such problems.

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