Device and method for testing bending performance of three-dimensional fabric

A technology of bending performance and testing equipment, which is applied in the direction of measuring equipment, using a stable bending force to test the strength and strength characteristics of materials, can solve the problems of different accuracy of test data and difficulties in mechanical testing, and achieve sample installation Convenience, improved repeatability and accuracy, and reduced frictional resistance

Pending Publication Date: 2021-10-26
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Three-dimensional fabric is a kind of flexible structure, its mechanical testing is more difficult
There is no uniform test standard for the bending performance of three-dimensional fabrics. Different laboratories use different fixtures, and the accuracy of the test data obtained is also not the same.

Method used

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  • Device and method for testing bending performance of three-dimensional fabric
  • Device and method for testing bending performance of three-dimensional fabric
  • Device and method for testing bending performance of three-dimensional fabric

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Embodiment Construction

[0035] The present invention is described in further detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation is provided, but the protection scope of the present invention is not limited to the following embodiments.

[0036] The three-dimensional fabric bending performance testing device and testing method of the embodiment include the following steps:

[0037] (1) if Figure 1 to Figure 6 As shown, this embodiment discloses a three-dimensional fabric bending performance test device, including connecting rod 1, connecting ear piece 2, rotating frame 3, rolling bearing 4, hinge shaft 5, hinge fixture 6 and other parts of the connection testing machine. The three-dimensional fabric sample is placed on the hinged fixture 6 in the rotating frame 3, the hinged shaft 5 passes through the through hole of the rotating frame 3 and connects the connec...

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Abstract

The invention discloses a three-dimensional fabric bending property testing device and method and belongs to the technical field of test fixtures. The device comprises a connecting rod, a connecting lug, a hinge shaft, a rotating frame, a hinge clamp and a rolling bearing, wherein the connecting lug is connected with the rotating frame through the hinge shaft, and the rolling bearing is fixed at a through hole of a contact surface of a hinge shaft and the rotating frame, so frictional resistance in the test process is reduced. The rotating frame is composed of eight borders with through holes in a matched mode, and the hinge shafts penetrate through the rolling bearings at the through holes of the hinge clamps to fix the rolling bearings on the rotating frame. The device is suitable for testing the bending performance of the three-dimensional fabric, the three-dimensional fabric can generate bending deformation with uniform curvature, and the bending moment and the curvature of the three-dimensional fabric sample piece can be determined according to the measured load and displacement data.

Description

technical field [0001] The invention relates to a test method, in particular to a test device and method for the bending performance of a three-dimensional fabric, and includes a calculation method for the bending moment and curvature of a three-dimensional fabric sample, which can specifically test and evaluate the bending performance of a three-dimensional fabric. It belongs to the technical field of test fixtures. Background technique [0002] Three-dimensional textile composites have been widely used in aerospace, transportation, and national defense because of their excellent mechanical properties and strong designability. Three-dimensional fabrics are reinforcements of textile composites, and their fiber structure determines the final mechanical properties of the composites. In the composite molding process of composite materials, three-dimensional fabrics often need to produce complex geometric deformations to meet the geometrical size requirements of components, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04G01N3/20G01D21/02
CPCG01N3/04G01N3/20G01D21/02G01N2203/0023G01N2203/0218G01N2203/04G01N2203/0647G01N2203/0676G01N2203/0682
Inventor 谢军波郭珍珍焦伟陈利杨志
Owner TIANJIN POLYTECHNIC UNIV
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