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Assistant clamp for measurement of racking strain of composite material

A strain measurement and auxiliary fixture technology, applied in measurement devices, analytical materials, instruments, etc., can solve the problems of non-parallel bayonet, reduced strain measurement accuracy, low efficiency, etc., to reduce operation links, improve pasting accuracy and efficiency, Ensure the effect of paste quality

Active Publication Date: 2017-06-20
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Practice has shown that the efficiency of this metal block installation method is very low, and the bayonet joints of the two extensometer mounting blocks are prone to non-parallel situations, which greatly reduces the strain measurement accuracy

Method used

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  • Assistant clamp for measurement of racking strain of composite material
  • Assistant clamp for measurement of racking strain of composite material
  • Assistant clamp for measurement of racking strain of composite material

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Such as Figure 1 to Figure 5 As shown, an auxiliary fixture for extrusion strain measurement of composite materials, the fixture is composed of a base, a stage, a clamping device and an extensometer mounting block:

[0025] The base includes a rocking bar 1, an L-shaped card 2, a fastening screw 3, a bottom plate 4 and a side plate 5, and the fastening screw 3 is provided with a round hole, and the rocking bar 1 cooperates with the fastening screw 3 through the round hole, and the L The shape card 2 is provided with a threaded hole, and the fastening screw 3 cooperates with the L-shaped card 2 through the threaded hole; the L-shaped card 2 is in contact with the side of the side plate 5 and fixed by bolts, and the upper surface of the bottom plate 4 is in contact with the lower surface of the side plate 5 and fixed by bolts; the stage includes an axi...

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Abstract

The invention discloses an assistant clamp for measurement of the racking strain of a composite material. The clamp can effectively reduce operation procedures for preparation of extrusion samples, lower the labor intensity of supporting staff and improve pasting efficiency and quality of extensometer installation blocks. Main technical points of the assistant clamp lie in that the assistant clamp can rapidly and accurately position and paste extensometer installation blocks, adjust the curing pressure of an adhesive and paste extensometer installation blocks on two surfaces of a sample and is applicable to single-bolt double-shear samples, single-bolt single-shear samples and double-bolt single-shear samples.

Description

technical field [0001] The invention relates to a fixture for testing mechanical properties of composite materials, in particular to an auxiliary fixture for measuring extrusion strain of composite materials. Background technique [0002] Compared with metal structures, although composite materials can improve the integrity of the structure, due to the needs or limitations of design, process, use and maintenance, it is still necessary to arrange certain design and process separation surfaces, maintenance covers and various external interfaces. Wait. The load transfer of these parts must be solved by corresponding connection methods, so the connection design is an essential key link in the composite material structure. [0003] The connection of composite laminates mainly includes adhesive bonding and mechanical connection. Mechanical connection is mainly divided into two types: rivet connection and bolt connection. Mechanical connection is divided into single shear and doub...

Claims

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Application Information

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IPC IPC(8): G01N3/04
CPCG01N3/04G01N2203/04
Inventor 邓立伟侯金涛陈新文郝文峰
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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