A Surface Roughness Analysis Method for Studying the Fatigue Resistance of Parts

A surface roughness and analysis method technology, applied in the direction of measuring devices, instruments, etc., can solve problems such as the inability to accurately study and evaluate the anti-fatigue performance of parts, and the inability to compare the degree of influence of anti-fatigue performance
CN108534738BActive Publication Date: 2019-10-25BEIHANG UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
BEIHANG UNIV
Publication Date
2019-10-25

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Abstract

The invention relates to a surface roughness analysis method for researching the fatigue resistance of a component. The method solves the technical problems incapable of accurately researching and evaluating the influence mechanism and law of machined surface roughness on the fatigue resistance of the component, and incapable of comparing the influences of machined surface roughness formed by different machining methods on the fatigue resistance of the component. The surface roughness analysis method for researching the fatigue resistance of a component specifically comprises decoupling the roughness profile curve of the surface profile height, varying with a measured length, of the machined surface of the component into a theoretical curve influenced by a process condition and a random curve influenced by a random factor, wherein the theoretical curve and the random curve both use the time as horizontal coordinates and use the surface profile height as vertical coordinates.
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Description

technical field

[0001] The invention relates to a surface roughness analysis method for studying the anti-fatigue performance of parts. Background technique

[0002] Surface roughness refers to the small spacing and unevenness of small peaks and valleys on the processed surface. It is an important surface integrity index. The value directly reflects the quality of the processed surface of the part. It is simple and easy to implement, so it is widely used in actual production inspection and technical research. The detection and analysis of surface roughness usually use the two indicators of arithmetic mean deviation Ra and maximum contour height Rz, both of which can inspect and evaluate the machined surface quality of parts. At the same time, the analysis of Ra and Rz is generally used to study the mechanism and law of the influence of surface roughness on the fatigue performance of specimens. However, using the above method to study the mechanism and law of the influence ...

Claims

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