Test device and method for sliding friction force of biological soft tissue material

A technology of biological soft tissue and sliding friction, which is applied in the direction of measuring devices, analyzing materials, and adopting mechanical devices, can solve problems such as difficult friction, non-uniformity, and complexity, and achieve high precision, cost saving, and simple operation Effect

Active Publication Date: 2017-10-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the irregularity, softness, complexity, and inhomogeneity of biological soft ti...

Method used

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  • Test device and method for sliding friction force of biological soft tissue material
  • Test device and method for sliding friction force of biological soft tissue material
  • Test device and method for sliding friction force of biological soft tissue material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] (1) Wrap the test piece made of cartilage on the fixed rod, and adjust the first and second fixed pulleys so that the tension line forms an angle of 45° with the horizontal direction. The mass of the weight is 1.00kg, the mass of the test piece is 0.25kg, the original length is 0.30m, the mass of the fixed pulley is 0.50kg, the radius of the fixed pulley is 0.02m, and the radius of the fixed rod is 0.02m. And mark M point on the test soft tissue (point directly below the center of the fixed rod), then start the tensile testing machine, set the speed v=0.0010m / s, and the time is 120s, record the height of the weight rise, and measure the red fixed rod The distance l from the center point O to the point M′, with no load once, record the rising height h of the weight 0 . Repeat the experiment 5 times, increase the speed of each experiment by 0.0005m / s, and record the data in the following table:

[0065] Table 1: Example 1——Test data form of friction force between cartil...

Embodiment 2

[0072] (1) Wrap the test piece made of skin on the fixed rod, and adjust the first and second fixed pulleys so that the tension line forms an angle of 60° with the horizontal direction. The mass of the weight is 1.00kg, the mass of the test piece is 0.20kg, the original length is 0.40m, the mass of the fixed pulley is 1.00kg, the radius of the fixed pulley is 0.03m, and the radius of the fixed rod is 0.03m. And mark M point on the test soft tissue (point directly below the center of the fixed rod), then start the tensile testing machine, set the speed v=0.0020m / s, and the time is 90s, record the height of the weight rise, and measure the red fixed rod The distance l from the center point O to the point M′, with no load once, record the rising height h of the weight 0 . Repeat the experiment 5 times, increase the speed of each experiment by 0.0004m / s, and record the data in the following table:

[0073] Table 2: Example 2—the test data form of friction force between skin tiss...

Embodiment 3

[0080] (2) Wrap the specimen made of Achilles tendon on the fixed rod, and adjust the first and second fixed pulleys so that the tension line forms an angle of 30° with the horizontal direction. The mass of the weight is 0.50kg, the mass of the test piece is 0.25kg, the original length is 0.10m, the mass of the fixed pulley is 0.50kg, the radius of the fixed pulley is 0.02m, and the radius of the fixed rod is 0.02m. And mark the point M on the test soft tissue (the point directly below the center of the fixed rod), then start the tensile testing machine, set the speed v=0.0010m / s, and the time is 200s, record the height of the weight rise, and measure the red fixed rod The distance l from the center point O to the point M′, with no load once, record the rising height h of the weight 0 . Repeat the experiment 5 times, increase the speed of each experiment by 0.0005m / s, and record the data in the following table:

[0081] Table 1: Example 1—the test data form of the friction f...

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Abstract

The invention, which belongs to the technical field of material performance testing, discloses a test device and method for a sliding friction force of a biological soft tissue material. According to the method, on the basis of the law of conservation of energy, testing of a sliding friction force between soft tissue materials is carried out; and the method is especially suitable for biological soft tissue materials that can not be tested easily currently and include the muscle, skin, cartilage and blood vessel. The testing technique based on a simple principle is easy to operate; the testing precision is high; and the sliding friction characteristic between the biological materials can be reflected effectively. The test device and method have the potential application value in biomaterial testing and soft tissue engineering fields.

Description

technical field [0001] The invention relates to a testing device and method for sliding friction of biological soft tissue materials, belonging to the field of material performance testing. Background technique [0002] With the development of human society, people pay more and more attention to the health of the body, and biological soft tissue materials are becoming more and more important. Conventional materials such as traditional inanimate medical metals, polymers, and bioceramics can no longer meet the requirements of medical development, and biosoft tissue materials are facing new opportunities and challenges. As a part of the properties of biological soft tissue materials, friction is not only indispensable in the preparation of biological soft tissue materials, but also plays a key role in the application process. However, due to the irregularity, softness, complexity, and inhomogeneity of biological soft tissue materials, it is difficult to directly measure the fr...

Claims

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Application Information

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IPC IPC(8): G01L5/00G01N19/00
CPCG01L5/0028G01N19/00
Inventor 武晓刚王艳芹陈魁俊武晓红李世兴郭媛高志鹏郭红梅王颖陈维毅
Owner TAIYUAN UNIV OF TECH
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