Thermally sprayed coating contact fatigue test machine capable of realizing failure early warning

A contact fatigue, thermal spray coating technology, applied in the field of fatigue testing machine, can solve the problem of inability to detect rolling fatigue degree and other problems

Pending Publication Date: 2017-02-22
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the inadequacy of the existing rolling contact method that cannot detect the degree of rolling fatigue, the present invention provides a thermal spray coating contact fatigue testing machine that can effectively detect the degree of rolling fatigue and can realize failure warning

Method used

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  • Thermally sprayed coating contact fatigue test machine capable of realizing failure early warning
  • Thermally sprayed coating contact fatigue test machine capable of realizing failure early warning
  • Thermally sprayed coating contact fatigue test machine capable of realizing failure early warning

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] refer to Figure 1 to Figure 9 , a thermal spray coating contact fatigue testing machine capable of realizing failure early warning, including a test device, a lubrication module, a loading module, a driving module and a signal acquisition module;

[0027] Described test device comprises test chamber 37, lubricating liquid chamber 31, upper sample fixed disk 6, upper sample 34, roller 35 and lower sample 36, lubricating liquid chamber 31 is sleeved on the main shaft 19, the lower end of test chamber 37 Interference fit with the end of the main shaft 19 and fixed with the main shaft, so that the main shaft drives the test chamber to rotate circumferentially during the rotation; the lower sample 36 is assembled in the test chamber 37, and the distance between the lower sample 36 and the test chamber 37 is Interference fit: the upper sample 34 and the upper sample...

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PUM

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Abstract

A thermally sprayed coating contact fatigue test machine capable of realizing failure early warning comprises a test device, a lubricating module, a loading module, a driving module and a signal acquisition module; in the test device, a lubricating fluid chamber sleeves a main shaft, the lower end of a test chamber is in interference fit with the end portion of the main shaft and is fixed to the main shaft, a lower sample is assembled in the test chamber, and the lower sample is in interference fit with the test chamber; an upper sample is in interference fit with an upper sample fixing plate, a roller is arranged between the upper sample and the lower sample, the upper sample fixing plate is directly acted by force load by the loading module, and the upper sample is indirectly acted by the upper sample fixing plate; and the signal acquisition module comprises an acoustic emission sensor, a data adapting card and a computer, the acoustic emission sensor is arranged in the upper sample fixing plate, and the acoustic emission sensor is in direct contact with the upper surface of the upper sample. The thermally sprayed coating contact fatigue test machine capable of realizing failure early warning, provided by the invention, can effectively detect the rolling fatigue degree.

Description

technical field [0001] The invention relates to a fatigue testing machine, in particular to a thermal spray coating contact fatigue testing machine capable of realizing failure warning. Background technique [0002] Rolling contact fatigue (RCF) is the main failure mode of more common mechanical parts and engineering structures, such as shafts, gears, cams and rollers. Rolling contact fatigue can cause huge economic losses and limit working equipment properties. The main manifestation of wear is the removal of surface material by causing adhesion forces under sliding contact. Rolling contact fatigue often occurs on the surfaces of friction pairs in rolling contact. It is a permanent damage mode, which includes crack initiation, crack propagation and fracture of the surface layer caused by the shear stress generated by the crack under the action of alternating load. Rolling contact fatigue is both disciplines concerned with surface failure of materials that share common fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/56G01N3/06
CPCG01N3/06G01N3/56G01N2203/0658G01N2203/0073
Inventor 朴钟宇徐佳周振宇文东辉
Owner ZHEJIANG UNIV OF TECH
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