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Tester for testing shear strength of frozen ice on material surface

A technology of shear strength and tester, applied in the direction of analyzing materials, instruments, measuring devices, etc., can solve the problems of mechanical performance test of ice without high-altitude freezing

Inactive Publication Date: 2015-03-11
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no relevant mechanical performance test for this kind of high-altitude frozen ice in China.

Method used

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  • Tester for testing shear strength of frozen ice on material surface
  • Tester for testing shear strength of frozen ice on material surface

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Experimental program
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Embodiment Construction

[0011] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings and technical solutions.

[0012] figure 1 In the present invention, 6 fixtures are placed horizontally in the groove of 11 materials to be tested, and frozen ice is generated in the grooves of 6 fixtures to form 7 samples, and 6 fixtures and 11 materials to be tested are frozen together through the trapezoidal groove Installed between the 9 operating platform and the 5 lifting platform, start the 1 variable speed motor after the 7 samples are fixed, the 1 variable speed motor is connected with the 2 lead screw reducer through the 3 coupling, and the 2 lead screw reducer generates lift to the 5 lifting platform Pulling action, 9 operating table is fixed, 5 lifting table 6 pulls action to 6 clamps and finally forms the shearing action on the bond between frozen ice and 11 material surface to be tested.

[0013] figure 1 In the presen...

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Abstract

The invention provides a tester for testing shear strength of frozen ice on a material surface, belongs to the technical field of cold region engineering, and is used for testing the adhesive shear strength of the frozen ice on a specific material. A lifting platform is positioned between a test bed and an operating platform, is in contact with steel tubes through bearings and slides on the steel tubes up and down; a screw reducer is connected with a force sensor through the test bed; the force sensor is connected with the lifting platform; a displacement sensor is positioned on the test bed and the lifting platform; the operating platform is fixed on a base and is parallel to the base; a fixture is a stainless steel block; a hollowed area as a test sample forming area is formed in the middle of the fixture; the upper end of the fixture is connected with the lifting platform; one end of a material to be tested is fixed on the operating platform, and the other end of the material to be tested is buckled on the fixture. The test can test the adhesive shear strength of the frozen ice and any material surface; through the displacement sensor, a deformation situation at an adhering position in a stretching process is measured; the adhesive shear strengths of the frozen ice at different loading rates can be obtained.

Description

technical field [0001] The invention belongs to the technical field of cold area engineering and relates to how to accurately measure the shear bonding strength of frozen ice attached to the surface of other materials. Background technique [0002] In recent years, with the continuous development of my country's aviation technology, the technical field is gradually perfected and independent, and the impact of the ice formed on the surface of the aircraft's wings and blades during high-altitude flight on its flight stability and safety has been increasingly recognized. s concern. At present, there is no relevant mechanical performance test for this kind of high-altitude frozen ice in China. Contents of the invention [0003] The invention provides a shear strength tester in which ice freezes on the surface of a material. The frozen ice is generated in a fixture (with known area) on the surface of the material to form a sample, and the sample to be tested is installed on the...

Claims

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Application Information

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IPC IPC(8): G01N19/04
Inventor 季顺迎陈晓东王安良顾纵棋毕祥军
Owner DALIAN UNIV OF TECH
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