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A testing device and method for testing surface friction of flexible materials

A technology of flexible materials and testing methods, applied in measuring devices, analyzing materials, using mechanical devices, etc., can solve problems such as easy deformation, affecting the application of flexible materials, and difficulty in measuring friction, achieving reliable friction data and promoting economical development and the effect of promoting social progress

Active Publication Date: 2020-03-10
上海脉科耐兹实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Flexible materials exist in various aspects of life, such as industry, medical treatment, and scientific research, and the influence of friction on the surface of flexible materials is often considered in applications. However, due to the diversity, complexity, softness, and ease of deformation of flexible materials, their The surface friction is not easy to measure, which will affect the practical application of flexible materials. At the same time, the measurement accuracy of the surface friction of flexible materials will also affect the effect of practical applications

Method used

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  • A testing device and method for testing surface friction of flexible materials
  • A testing device and method for testing surface friction of flexible materials
  • A testing device and method for testing surface friction of flexible materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] (1) Wrap the test piece made of rubber on a cylindrical rod made of a steel ring, and adjust the position of the upper cylindrical rod so that the first tension line forms an angle of 45° with the vertical direction. The mass of the weight is 2kg, the mass of the test piece is 0.5kg, and the radius of the cylindrical rod is 0.02m. And mark the M point on the test piece (the point on the right edge of the center of the upper cylindrical rod), then start the tensile testing machine, set the speed v=0.001m / s, and the time is 120s, record the height of the weight rise, and measure it with a vernier caliper The distance a from the center point O of the upper cylindrical rod to the point M'. Repeat the experiment 5 times, increase the speed of each experiment by 0.0005m / s, and record the data in the following table:

[0069] Table 1: Example 1—Test data form of friction between rubber and steel ring

[0070]

[0071] (2) Then substitute into the formula:

[0072]

[...

Embodiment 2

[0075] (1) Wrap the specimen made of hydrogel on a cylindrical rod made of bone, and adjust the position of the upper fixing rod so that the first tension line forms an angle of 30° with the vertical direction. The mass of the weight is 3kg, the mass of the test piece is 1kg, and the radius of the cylindrical rod is 0.03m. And mark the M point on the test piece (the point on the right edge of the center of the upper cylindrical rod), then start the tensile testing machine, set the speed v=0.002m / s, and the time is 90s, record the height of the weight rise, and measure the cylinder The distance a from the rod center point O to point M'. Repeat the experiment 5 times, increase the speed of each experiment by 0.0004m / s, and record the data in the following table:

[0076] Table 2: Example 2—Test data table of friction force between hydrogel specimen and bone

[0077]

[0078]

[0079] (2) Then substitute into the formula:

[0080]

[0081] have to: in and Respec...

Embodiment 3

[0083] (1) Wrap the test piece made of elastic rope on a cylindrical rod made of pulley material, and adjust the position of the upper cylindrical rod so that the first tension line forms an angle of 15° with the vertical direction. The mass of the weight is 1kg, the mass of the test piece is 0.2kg, and the radius of the cylindrical rod is 0.05m. And mark the M point on the test piece (the point on the right edge of the center of the upper cylindrical rod), then start the tensile testing machine, set the speed v=0.01m / s, and the time is 30s, record the height of the weight rise, and measure it with a vernier caliper The distance a from the center point O of the upper cylindrical rod to the point M'. Repeat the experiment 5 times, increase the speed of each experiment by 0.01m / s, and record the data in the following table:

[0084] Table 1: Test data table of embodiment 3—frictional force between elastic rope and pulley

[0085]

[0086]

[0087] (2) Then substitute int...

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Abstract

The invention relates to a test device and a method for testing the surface friction of a flexible material, belongs to the technical field of material performance test, and solves the technical problem to provide the test device and the method for testing the surface friction of the flexible material with the advantages that the operation is convenient; the cost is saved and the test precision ishigh. In order to solve the problem, the device has the technical scheme that the device comprises a stretch test machine, an upper cylinder rod, a rectangular groove, a lower cylinder rod, a weightand a computer, wherein the bottom surfaces of the upper cylinder rod and the lower cylinder rod are fixedly connected with the same inner side surface of the rectangular groove; the upper part stretch end of the stretch test machine is connected with the upper end of a test piece through a first tension wire; the upper part of the test piece surrounds the right side of the upper cylinder rod; thelower part of the test piece surrounds the left side of the lower cylinder rod; the lower end of the test piece is connected with a bottom support seat of the weight or the stretch test machine through a second tension wire; a sensor arranged in the stretch test machine is connected with the computer. The test device and the method can be widely applied to the field of surface friction measurement of the flexible material.

Description

technical field [0001] The invention discloses a testing device and method for testing the surface friction of flexible materials, belonging to the technical field of material performance testing. Background technique [0002] Flexible materials exist in various aspects of life, such as industry, medical treatment, and scientific research, and the influence of friction on the surface of flexible materials is often considered in applications. However, due to the diversity, complexity, softness, and ease of deformation of flexible materials, their The friction of the surface is not easy to measure, which will affect the practical application of flexible materials. At the same time, the measurement accuracy of the surface friction of flexible materials will also affect the effect of practical applications. Therefore, how to measure the friction force on the surface of flexible materials easily and with high precision is of great significance to the practical application of flex...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/02G01L5/00
CPCG01L5/0033G01N19/02
Inventor 武晓刚陈魁俊武晓红王艳芹王兆伟张全有高志鹏郭红梅郭媛陈维毅
Owner 上海脉科耐兹实业有限公司