Multi-specimen Damp-Heat Cycle and Alternating Load Coupling Dynamic Test Device

Abstract

The invention discloses a multispecimen humid heat cycling and alternating load coupling dynamic testing device. The device comprises an environmental cabinet, a fixed loading plate, a pulley loading plate, multiple upper connecting parts, multiple test loading parts, multiple lower connecting parts and multiple fixed pulleys; the fixed loading plate and the pulley loading plate are correspondingly arranged in parallel and installed inside the environmental cabinet; the upper connecting parts are fixedly hinged to the lower surface of the fixed loading plate; the test loading parts comprise the first test specimen, the tail test specimen and other test specimens, and the upper ends of the test specimens are connected with the upper connecting parts respectively; the lower connecting parts are connected with the lower ends of the test loading parts respectively, and a movable pulley is arranged at the lower end of each lower connecting part; the fixed pulleys are detachably installed on the upper surface of the pulley loading plate. The multispecimen humid heat cycling and alternating load coupling dynamic testing device has the advantages of being compact in structure, high in reliability, good in uniformity of all the test specimen loads, capable of saving energy and stable.

Description

technical field [0001] The invention relates to the field of bonding test piece loading test, in particular to a multi-test piece damp heat cycle and alternating load coupling dynamic test device. Background technique [0002] In modern society, with the rapid development of motor vehicles, vehicle adhesives are widely used on the window glass of motor vehicles. The window adhesive is greatly affected by humidity and temperature, and when the motor vehicle is running at high speed, the window is under negative pressure due to the high-speed airflow outside the window. Effects of coupled loading of hygrothermal cycles and alternating loads. Because the window adhesive is inside the car body structure, after a certain period of use, it is impossible to predict its fatigue and aging phenomena. When repairing the EMU, it is not clear whether the strength of the window adhesive can still Just replace it if it meets the requirements of use, causing a lot of waste. Therefore, it...

AI Technical Summary

Problems solved by technology

[0005] The present invention designs a kind of dynamic test device that can carry out the coupled loading of damp heat cycle and alternating load cycle to multiple specimens at the same time. One of the purposes is to solve the deficiencies in the existing cement dynamic loading test technology. Solve problems such as the instability of simultaneous serial loading tests on multiple specimens, and the large influence of tests between specimens

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