Composite material bending and interlaminar shear sample fast assembly fixture

Abstract

The invention discloses a composite material bending and interlaminar shear sample fast assembly fixture. The problems that the samples are inconvenient to adjust in the testing process, position centering cannot be guaranteed and the like are solved. The fast assembly fixture comprises a positioning and adjusting assembly for assembling samples on a testing machine, and a supporting seat. The technical key points are that the positioning and adjusting assembly is composed of a limiting stopper, a supporting block, an adjusting pad and a slide block; the limiting stopper is fixed on the supporting block; the supporting block is connected with the slide block through a tension spring; a T-shaped boss of the slide block is matched with a T-shaped slideway of the supporting seat; the slide blocks are assembled between baffles at two ends of the supporting seat by utilizing the adjusting pad and a thrust spring; the adjusting pad arranged between the two slide blocks is matched with the positioning groove of the supporting seat for inserting and limiting by virtue of a positioning table; and the bottom of the supporting seat is fixedly connected with a lower platform through a positioning guide rod. The fixture is reasonable in structural design, the sample position centering operation is easy, the supporting span is convenient and rapid to adjust, and the bending test and interlaminar shear test are rapidly switched, so that the test efficiency is improved, and the experimental result accuracy is ensured.

Description

technical field [0001] The invention relates to a sample support fixture for a mechanical performance testing machine, in particular to a fixture that can quickly complete the adjustment of the support span of samples of various specifications and sizes, and can also meet the requirements of the axis of the indenter with different shapes and the sample size. Composite bending and interlaminar shear specimen quick-release fixtures for center alignment requirements. This fixture is especially suitable for high and low temperature environmental tests. Background technique [0002] Composite materials are widely used in aerospace, automobile manufacturing and other fields. Composite material bending test and interlaminar shear test are carried out on the mechanical performance testing machine. Generally, the rectangular strip sample is fixed on the lower platform of the testing machine by using support fixtures, and the performance is performed by loading the upper pressure hea...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a quick-loading fixture for composite material bending and interlayer shearing samples, which fundamentally solves the problems of inconvenient adjustment and inability to ensure the centering of the sample during the test process, and its structural design is reasonable. The centering operation of the sample position is easy, the adjustment of the support span is convenient and fast, and the switching between the bending test and the interlaminar shear test is quick, thereby improving the test efficiency and ensuring the accuracy of the test results

Images