Structure and load transfer integrated composite material three-point bending clamp and using method

Abstract

The invention provides a structure and load transfer integrated composite material three-point bending clamp and a using method, and relates to the technical field of composite material load and environment coupling service conditions. The clamp comprises a bottom plate, a support, stand columns, a pressing rod, a pressing plate and a spring, wherein the spring is sleeved on the cylinder section of the pressing rod, and then the reserved part of the cylinder section of the pressing rod is sleeved on the middle round hole of the pressing plate; cylindrical through holes in the two ends of the pressing plate sleeve the stand columns on the two sides; and the load is transmitted to the spring on the pressing rod through downward pressing of the pressing plate, and the load of the spring is further transmitted to the sample. Under the conditions that a mechanical testing machine is not occupied for a long time and electronic equipment such as a load transfer device is not needed, an accurate and stable three-point bending load is provided for the composite material, and the service condition that the composite material bears load coupling environment factors can be achieved.

Description

technical field [0001] The invention relates to the field of technical devices for coupling service conditions of composite material loads and environments, in particular to a composite material three-point bending loading fixture integrated with structure and load and a use method thereof. Background technique [0002] In the course of development of modern materials science and technology, due to the inherent characteristics of light weight and high strength, composite materials have become more and more widely used. In the actual service environment, composite materials often need to bear the bending stress, especially the three-point bending stress under the pressure of a single pressure head. Therefore, it is not only of theoretical significance, but also of practical application significance for the simulation test of composite materials under three-point bending load in service environment. Under different environmental conditions, there are few studies on the condit...

AI Technical Summary

Problems solved by technology

Under different environmental conditions, there are few studies on the conditions for composite materials to withstand long-term three-point bending loads. The main difficulty is that it is impossible to apply three-point bending loads to composite materials for a long time. Since electronic instruments such as load carriers and digital displays cannot work normally under some extreme environmental conditions, the continuous three-point bending load and environmental effects on composite material samples cannot be effectively coupled

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