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A method for judging the biaxial tensile strength of fabric membrane materials

A biaxial stretching and judging method technology, which is applied in the direction of strength characteristics, using stable tension/pressure to test material strength, analyzing materials, etc., can solve problems that do not involve the judging method of biaxial tensile strength of fabric membrane materials, etc. , to achieve the effect of being conducive to use and promotion, simple to use and high in reliability

Active Publication Date: 2021-01-01
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned documents involve the biaxial tensile test method and mechanical properties of metal materials, but do not involve the determination method of the biaxial tensile strength of fabric membrane materials.

Method used

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  • A method for judging the biaxial tensile strength of fabric membrane materials
  • A method for judging the biaxial tensile strength of fabric membrane materials
  • A method for judging the biaxial tensile strength of fabric membrane materials

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 1 As shown, it is a preferred embodiment of the method for determining the biaxial tensile strength of a fabric membrane provided by the present invention, comprising the following steps:

[0041] Step 1: Establish the biaxial tensile strength criterion of the fabric membrane;

[0042] Step 2: Determining the correlation coefficient of the biaxial tensile strength criterion of the fabric membrane material by the method of experiment;

[0043] Step 3: According to the results of step 2, determine the perfect biaxial tensile strength criterion of the fabric membrane material, and draw the envelope line of the biaxial tensile strength of the fabric membrane material;

[0044] Step 4: Determine the biaxial tensile strength of the fabric membrane according to the perfect fabric membrane biaxial tensile strength criterion and the fabric membrane biaxial tensile strength envelope.

[0045] The biaxial tensile strength criterion of the fabric membrane material ...

Embodiment 2

[0059] On the basis of Example 1, five slits are arranged on each stretching arm, and the stress ratio combinations are 3.5:1, 2.5:1, 1.5:1, 1:1, 1:1.5, 1:2.5, 1:3.5. In step 2.4, according to the test results of step 2.2 and step 2.3 and the biaxial tensile strength criterion of the fabric membrane material established in step 1, the first value in the biaxial tensile strength criterion of the fabric membrane material is obtained by the least square method. Correlation coefficient, second correlation coefficient, third correlation coefficient, fourth correlation coefficient and fifth correlation coefficient.

Embodiment 3

[0061] On the basis of Example 2, the number of slits provided on each stretching arm is 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses a judgment method for biaxial stretching strength of a fabric membrane material, and relates to the technical field of mechanical strength and experiments of the fabric membrane material. The method comprises following steps: step 1, biaxial stretching strength principles of the fabric membrane material are established; step 2, correlation coefficients of the biaxial stretching strength principles of the fabric membrane material are measured with a test method; step 3, the perfect biaxial stretching strength principles of the fabric membrane material are determined according a result of step 2, and an envelope curve of the biaxial stretching strength of the fabric membrane is drawn; step 4, the biaxial stretching strength of the fabric membrane material is judged according to the result. According to the judgment method for the biaxial stretching strength of the fabric membrane material, the stretching strength condition of the fabric membrane material during biaxial stretching can be accurately reflected, technological support is provided for design and analysis of practical engineering, and the judgment method has the characteristics of simple operation and high reliability.

Description

technical field [0001] The invention relates to the technical field of mechanical strength and experiments of fabric membranes, in particular to a method for judging the biaxial tensile strength of fabric membranes. Background technique [0002] Fabric membrane is a widely used composite material, mainly used in civil engineering, aerospace and other industrial fields. The fabric membrane is composed of the fabric base fabric as the structural load-bearing layer, and the polymer film or coating as the functional layer. The fabric base fabric is made of polymer fibers through spinning and weaving. The functional layer is laminated or coated. cover. [0003] The tensile strength of fabric membrane is an important basic parameter for its engineering application. At present, the domestic and foreign industry standards for engineering application all adopt relatively simple uniaxial tensile measurement method to measure the tensile strength of fabric membrane, such as ASTM4851, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0017G01N2203/0212G01N2203/0254G01N2203/0282
Inventor 陈务军石泰百高成军胡建辉赵兵
Owner SHANGHAI JIAOTONG UNIV