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Clamp for testing I type interlayer fracture toughness of composite material

A technology for interlaminar fracture toughness and test fixtures, applied in the direction of analyzing materials, measuring devices, strength characteristics, etc., can solve problems such as high labor intensity, reduced efficiency, fatigue, etc., to reduce labor intensity, reduce operating links, and solve cumbersome operations Effect

Active Publication Date: 2016-07-20
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the test, the testers need to repeat a series of actions many times, and the labor intensity is high, which is not only easy to make people tired, but also easy to make people feel irritable, resulting in a decrease in efficiency

Method used

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  • Clamp for testing I type interlayer fracture toughness of composite material
  • Clamp for testing I type interlayer fracture toughness of composite material
  • Clamp for testing I type interlayer fracture toughness of composite material

Examples

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Embodiment Construction

[0021] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 1 to Figure 5 As shown, a type I interlaminar fracture toughness test fixture of composite materials, the fixture is composed of a base, a transmission device, a clamping device and an observation platform:

[0023] The base includes a front panel 1, a side panel 2 and an upper panel 3, and the lower surface of the upper panel 3 is in contact with the upper surfaces of the front panel 1 and the side panel 2 and is connected by bolts; the transmission device includes a beam connecting seat 4, an active Rack 5, first constraint guide rail 6, limit slider 7, driven rack 8, second constraint guide rail 9, limit marking line 10 and gear box, upper surface of driving rack 5 and lower surface of beam connecting seat 4 Contact and fixed by bolts, the upper surface of the crossbeam connecting seat 4 is in contact with the crossbeam and fixed by...

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Abstract

The invention discloses a clamp for testing I type interlayer fracture toughness of a composite material. The clamp can effectively solve the problems that the repetitive operation is too much, the labor strength is large, the test preparation time is long, and thus operators may get fatigue easily. The clamp is made of a base, a transmission device, a clamping device, and an observation platform. The clamp is characterized in that the observation platform and a sample can be elevated synchronously; an observation device and an illumination device can be arranged; the extension situation of cracks in the front side and the rear side can be observed at the same time, and the end portions of the sample can be supported during the whole process.

Description

technical field [0001] The invention relates to a jig for testing mechanical properties of composite materials, in particular to a jig for testing type I interlayer fracture toughness of composite materials. Background technique [0002] One of the disadvantages of many advanced laminated composites is poor interlaminar performance, and the type I interlaminar fracture toughness can be used to determine the design allowable value. Understanding the interlaminar failure resistance of laminated composites is beneficial to product development and material selection. The determination of mode Ⅰ interlaminar fracture toughness is very necessary in the damage tolerance analysis of composite structures and the establishment of design allowable values. [0003] When performing a type I interlaminar fracture toughness test, before the crack propagates, the tester needs to support the unloaded end of the sample with his hand; A flashlight illuminates the crack, carefully observes th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/04
Inventor 邓立伟侯金涛陈新文
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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