A kind of cross-shaped specimen for biaxial tensile strength test and its making method

A biaxial tensile and strength test technology, applied in the direction of strength characteristics, preparation of test samples, and the use of applied stable tension/pressure to test the strength of materials, etc., can solve problems such as biaxial tensile strength of fabric films that cannot be used

Active Publication Date: 2020-11-10
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of these techniques are currently available for biaxial tensile strength testing of fabric membranes

Method used

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  • A kind of cross-shaped specimen for biaxial tensile strength test and its making method
  • A kind of cross-shaped specimen for biaxial tensile strength test and its making method
  • A kind of cross-shaped specimen for biaxial tensile strength test and its making method

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Embodiment Construction

[0032] Such as Figure 1~3 As shown, a preferred embodiment of the present invention provides a cross-shaped specimen for biaxial tensile strength testing, including a central core area 2 and four outriggers 1, and four outrigger arms 1 surround the central core area 2 outwards Extend and form a cross shape, each outrigger 1 is connected to the central core area 2 through the transition zone 3, the end of the outrigger 1 is the clamping end 9, and the clamping end 9 is provided with a clamping end rubber rod 4, and the clamping end The rubber rod 4 is used to connect the fixture of the biaxial tensile testing machine; the central core area 2 is a single layer, and the outrigger 1 and the transition area 3 are double layers. The biaxial tensile strength test cross-shaped specimen of this embodiment is set as follows: when performing a biaxial tensile strength test, the outrigger 1 transmits the tensile force of the biaxial testing machine to the transition zone 3, and finally a...

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Abstract

The invention discloses a crossed test piece for a biaxial stretching strength test. The crossed test piece comprises a middle core region and four stretching arms, wherein the four stretching arms extend outward around the middle core region to form a cross shape; each stretching arm is connected with the middle core region through a transition region; a clamping end is arranged at the end part of each stretching arm and a clamping end rubber rod is arranged at each clamping end; the clamping end rubber rods are used for connecting a clamp of a biaxial stretching testing machine; the crossed test piece for the biaxial stretching strength test is configured as follows: when the biaxial stretching strength test is carried out, the stretching arms are used for transmitting a pull force of the biaxial stretching testing machine to the transition region; finally, the pull force is applied to the middle core region; the middle core region is a core region of the biaxial stretching strength test; stretching damage firstly occurs in the middle core region. The invention further provides a manufacturing method of the crossed test piece for the biaxial stretching strength test. The crossed test piece disclosed by the invention can be used for determining and characterizing the biaxial stretching strength of a fabric membrane material; the damages occur in a single-layer testing region; after being reinforced, the stretching arms and the transition region are damaged; the crossed test piece can be applied to the fields of building membrane materials, airship skins and other industrial fabrics and the like.

Description

technical field [0001] The invention relates to a test piece for testing the biaxial tensile strength of a fabric membrane and a manufacturing method thereof, in particular to a cross-shaped test piece for a biaxial tensile strength test and a manufacturing method thereof, which can be used for architectural membranes The biaxial strength test of fabric membrane materials such as airship skin and airship skin belongs to the field of material mechanics experiment technology and building structure material test technology. Background technique [0002] Fabric membranes are often composed of fabric base fabric and coating, or fabric base fabric and multifunctional layer composite. The fabric base fabric is woven from polymer fibers through spinning, and the coating is to coat the surface of the base fabric with a functional layer. As a lightweight and high-strength composite material, fabric membrane is widely used in construction, aerospace and other fields, and its basic for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N1/28
CPCG01N1/286G01N3/08G01N2001/2873G01N2203/0017G01N2203/0254
Inventor 陈务军高成军石泰百王平安王梅
Owner SHANGHAI JIAO TONG UNIV
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