Impact test device for quantitative measurement of low impact energy

Abstract

The invention discloses an impact test device for quantitatively measuring low impact energy and belongs to mechanical performance testing instruments. The impact test device is used for measurement tests of impact energy of a brittle material with low impact property and the like. The impact test device comprises a rack, an impact block body, a release device and a speed measuring system, wherein the rack comprises a guide rail and a supporting clamp slot for accommodating a sample, and the supporting clamp slot is formed in the middle of the rack; the impact block body is arranged on the guide rail and capable of sliding; the release device comprises an electromagnet suction disc; the speed measuring system is composed of two symmetrically arranged laser speedometers, is lower than the sample supporting clamp slot and is parallel and level to a groove of the impact block body. The impact test device mainly solves the problems that the impact energy of the brittle material is hardly detected by conventional similar instruments, the manufacturing cost of the conventional instrument is high and the like, and is a simple, cheap and practical test device. By adopting the free falling impact, the speedometers can accurately measure the speed and calculate the impact energy, and the impact test device with the price of hundreds of yuan can replace a traditional falling ball or pendulum bob type impact test device with the price of several tens of thousands of yuan.

Description

technical field [0001] The invention relates to an impact test device, in particular to an impact test device for measuring brittle materials with very low impact energy. Background technique [0002] The impact testing machine of prior art is a kind of precise and complicated, expensive measuring instrument, such as the commercially available pendulum type impact testing machine, at least comprises a lifting mechanism driven by a high-grade stepping motor, a pendulum mechanism of precision machining and The huge base stabilization mechanism costs thousands or even tens of thousands of dollars. Moreover, the test accuracy is not high when testing samples with low impact energy. In practical applications, some materials with high hardness and high brittleness, such as ceramics, and metal amorphous materials with high brittleness, often have only a few impact energy. Joule, when tested with a traditional pendulum impact testing machine, it is often impossible to test the real...

AI Technical Summary

Problems solved by technology

[0002] The impact testing machine of the prior art is a kind of precise and complicated, expensive measuring instrument, such as the commercially available pendulum type impact testing machine, at least includes a lifting mechanism driven by a high-grade stepping motor, a precision-machined pendulum mechanism and Huge base stabilization mechanism costs thousands or even tens of thousands

Moreover, the test accuracy is not high when testing samples with low impact energy. In practical applications, some materials with high hardness and high brittleness, such as ceramics, and metal amorphous materials with high brittleness, often have only a few impact energy. Joule, when tested with a traditional pendulum impact testing machine, it is often impossible to test the real impact energy, which especially brings great troubles to scientific research

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