Loading device for creep experiments of multi-specimen bonded joints

Abstract

The invention discloses a loading device for creep experiments of multi-specimen bonded joints, which includes an upper loading plate and a lower loading plate, first to Nth bonding joints, a main loading lever and an arc-shaped lever. The first to Nth bonded joints are connected in series, one end of the main loading lever applies a pulling force, and the pulling force is sequentially loaded on the first to Nth bonding joints through the main loading lever and the arc lever, so that the tensile force of each bonding joint equal. The multi-specimen bonded joint creep test loading device of the present invention can simultaneously load multiple test piece bonded joints, thereby greatly shortening the test period and reducing the test cost. The arc-shaped lever and the lever support assembly are used to realize the series loading of the bonded test pieces. The force of each bonded test piece is equal and the direction is the same, and the total loading load is reduced to ensure the reliability of the experimental data.

Description

technical field [0001] The invention relates to the technical field of adhesive joint experiment devices, in particular to a creep experiment loading device capable of testing adhesive joints of multiple specimens in a high-temperature environment chamber. Background technique [0002] With the rapid development of high temperature and high pressure technology, creep test has become one of the main performance tests that must be carried out for materials. Creep test refers to a kind of material mechanical performance test to determine the slow plastic deformation of the experimental material under the action of constant temperature and constant stress for a long time. The usual creep test is carried out by uniaxial tension under the condition of high temperature environment. The test method of the tensile creep test: at a certain constant temperature, put a group of samples under different constant pressures for the test to obtain a series of creep curves, and then draw the...

AI Technical Summary

Problems solved by technology

[0004] Most of the current creep test devices use rigid hydraulic servo test machines for loading. Although these devices have superior performance in load size control and data acquisition, they also have obvious disadvantages: First, each device can only test a single test device. The creep experiment takes a long time, and if you want to conduct experiments on a group of multiple specimens, the experiment cycle is particularly long

Second, the stability of the tension loaded by the servo system is not enough, resulting in low accuracy of the experiment

The third is that the cost of the instrument is very high, the power consumption is large, and the test cost is greatly increased

Fourth, the measurement accuracy of creep deformation is not high, resulting in inaccurate experimental data

Images