Tool for preparing composite material test sample piece and preparation method of test sample piece

Abstract

According to the tool for preparing the composite material test sample piece and the preparation method of the test sample piece, the special tool is designed to fix a three-interlayer composite structure sample material blank composed of a reinforcing plate, a limiting plate and a to-be-tested composite material plate, and it is ensured that the reinforcing plate and the to-be-tested composite material plate do not have relative displacement in the cementing and curing process; the bonding reliability is improved by adopting a high-temperature-resistant epoxy glue bonding and curing method, and then test samples with corresponding sizes are obtained by machining and cutting according to size requirements. The tool is adopted to assist high-temperature-resistant epoxy glue to perform in-situ cementing of the reinforcing plate / to-be-tested composite plate, then the composite material test sample piece is prepared by a machining method, it is ensured that no relative displacement exists in the resin glue curing process, the batch consistency of the sample piece is improved, the reinforcing plate is reliably cemented, The tool can effectively solve the problem of test failure caused by debonding and abnormal damage of the reinforcing sheet when a sample prepared by a conventional method is tested under harsh environmental conditions such as high temperature and damp heat, and meanwhile, the preparation efficiency of the sample is greatly improved.

Description

technical field [0001] The invention relates to the technical field of non-metallic material manufacturing, in particular to a tooling and method for preparing mechanical performance test samples. Background technique [0002] Composite materials have the characteristics of high specific strength, high specific modulus, and anisotropy, and have been widely used as structural parts in aerospace, electronic equipment manufacturing and other fields. Mechanical properties are the basic characteristics of composite materials, and also the basis for evaluating whether they can be used in actual equipment. In order to evaluate composite materials in engineering applications, it is often necessary to combine the equipment working environment, prepare test samples according to corresponding standards, and conduct sample test comparison and analysis and evaluation of their mechanical properties under specific temperature and humidity conditions. In order to accurately test the mechan...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a tooling for preparing composite material test samples and a method for preparing test samples, which can effectively solve the test problems caused by the debonding and abnormal damage of the reinforcing sheet when the composite material is tested under severe conditions. The problem of failure and the problem of poor sample consistency and large dispersion of test data caused by the large error of the bonding position of the reinforcement sheet, and improve the efficiency of sample preparation

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