Interlayer structure core board bonding strength sampling and testing tool

Abstract

The invention relates to an interlayer structure core board bonding strength sampling and testing tool. The tool comprises a lining bonding on the surface of a composite material for sampling and testing, a sampling saw arranged on an electric drill or a drilling machine and used for sawing a test part from the composite material bonding the lining, and a test connecting piece arranged on a tensile testing machine, and connected with the lining for performing the bonding strength tests on the obtained composite material. the sample can be directly selected in the composite material and tested through the sampling and testing tool to obtain the real bonding strength of the interlayer structure, test structure is more accurate, the sampling and testing efficiency is higher, a sample indirect measurement traditional mode for the core board bonding strength of the previous interlayer structure parts that a furnace test panel or other standard production are required is changed, production processing cost of a traditional sample is effectively reduced, the structure is simple, processing is easy, cost is low, and the tool is in favor of wide popularization and usage.

Description

technical field [0001] The invention belongs to the technical field of testing composite material sandwich structure parts, and in particular relates to a sampling and testing tool for bonding strength of sandwich structure board cores. Background technique [0002] The sandwich structure is generally a composite material made of three layers of materials, consisting of a skin and a core material. It has the characteristics of specific strength, high specific modulus and low density. It has a large number of applications in aviation. [0003] For scrap composite materials or problematic composite materials, it is often necessary to measure the bonding strength of its sandwich structure for better analysis and improvement. However, at present, the core bond strength of the outer sandwich structure parts of composite materials in China needs to be measured indirectly by furnace test plates or samples made according to other standards (such as ASTM C297, etc.), and cannot be di...

AI Technical Summary

Problems solved by technology

However, at present, the core bond strength of the outer sandwich structure parts of composite materials in China needs to be measured indirectly by furnace test plates or samples made according to other standards (such as ASTM C297, etc.), and cannot be directly measured on composite materials. Sampling and testing operations are cumbersome, time-consuming, extremely low in efficiency, high in sample production costs, and relatively low in accuracy of test structures

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