Floating friction plate whole-process damage identification and service life prediction method and equipment

A technology for damage identification and life prediction, applied in the direction of applying repeated force/pulsation force to test material strength, measuring device, computer-aided design, etc., can solve problems such as unstable detection signal and insufficient coverage of measurement range, and improve accuracy , the effect of accurate analysis results

Active Publication Date: 2022-02-18
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Description
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Problems solved by technology

[0004] The invention provides a method and equipment for the whole process damage identification and life prediction of the floating friction plate, which solves the problems of insufficient coverage of the measurement range in the contact measurement of the floating friction plate and unstable detection signals in the non-contact measurement

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  • Floating friction plate whole-process damage identification and service life prediction method and equipment
  • Floating friction plate whole-process damage identification and service life prediction method and equipment
  • Floating friction plate whole-process damage identification and service life prediction method and equipment

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] In actual service, the floating friction plate will continue to suffer from strong random dynamic loads, which will easily cause microcracks on its surface. In the continuous service environment, the floating friction plate continues to suffer from strong random dynamic loads, resulting in the evolution of micro-cracks, and finally the formation of macro-cracks, and the fracture and failure of the floating friction plate. The whole process of crack init...

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Abstract

The invention provides a floating friction plate whole-process damage identification and service life prediction method and equipment. The method comprises the following steps that a floating friction plate operates in a simulated service environment, in-plane deformation and out-of-plane displacement images of the floating friction plate are measured in a non-contact mode through the three-dimensional DIC technology, data analysis is conducted, and relation between a complete damage accumulation item and fatigue life prediction of the floating friction plate in an experiment is obtained; and the image information of the floating friction plate is imported into the relationship, and damage identification and service life prediction are carried out. According to the invention, the experimental state data of the floating friction plate can be measured in a non-contact manner, two factors of in-plane deformation and out-of-plane displacement which have great influence on data analysis of the floating friction plate are concerned at the same time, and the service life prediction accuracy of the floating friction plate is improved.

Description

technical field [0001] The invention belongs to the field of friction plate detection, and in particular relates to a method and equipment for the whole-process damage identification and life prediction of a floating friction plate. Background technique [0002] During the use of the floating friction plate, the working environment is harsh, and small cracks are easy to initiate in multiple parts of the friction plate. In the continuous service working environment, multiple small cracks in the floating friction plate will further expand and break suddenly, which will cause danger. Therefore, the full-process damage identification and life prediction of the floating friction plate are of great significance to the safe application of the equipment. [0003] For the detection of floating friction plates, the main method currently used is based on strain detection. There are two main ideas for strain detection, one is contact measurement, and the other is non-contact measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G16C60/00G01N3/34G01N21/956G06F119/04
CPCG06F30/20G16C60/00G01N21/956G01N3/34G01N2203/0073G06F2119/04
Inventor 魏炳忱刘子尚胡铮张坤张万昊韩明张国洪戴国文许成法金孔杰王志涛
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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