A fixture system for creep testing

Abstract

The invention provides a fixture system for a creep test. The fixture system comprises an upper tensile rod, a plate sample joint, an extending rod, and a lower tensile rod, wherein a first connecting part is arranged between the upper tensile rod and the plate sample joint; a second connecting part is arranged between the plate sample joint and the lower tensile rod; the plate sample joint is coaxially connected with the extending rod; the structure of the second connecting part is the same as that of the first connecting part; the first connecting part is formed by combining a shoulder joint, a convex block and a first gasket or is formed by combining a first stopper, a second stopper, a second gasket, a tensile block and a fixing part. According to the design of the first connecting part and the second connecting part, a whole insulating material part is stressed with pressure instead of tension before, and thus the requirement on the tensile strength of the insulating material in the system is lowered. Moreover, the tensile block and the like are made of insulating materials, and the overall equipment is uncharged after pulse current is introduced, so that the safety performance of the equipment in the using process is improved, and a creep effect is good.

Description

technical field [0001] The invention relates to the field of material creep testing devices, in particular, to a clamp system for creep testing. Background technique [0002] Creep age forming technology is more and more widely used in the aerospace field to meet the needs of large integral panel forming. Creep aging forming technology integrates the forming-based manufacturing environment and the forming-based heat treatment environment in space and time, and uses the creep and stress relaxation characteristics of the material to make the elastic pre-strain of the component to be formed partially partially after a certain period of time. It is a forming technology that converts into plastic strain, thereby realizing the forming and forming of parts at the same time. The disadvantage of creep aging forming is that the cycle is long and the energy consumption is large. At the same time, the high-end equipment manufacturing industry such as aerospace has higher and higher req...

AI Technical Summary

Problems solved by technology

When this equipment is used for electrical pulse creep experiments, the pulse current is introduced to the sample through the output end of the pulse power supply. Since the sample, extension rod, and fixture system are all made of conductive materials, the current will inevitably be introduced into the creep testing machine to damage it. equipment and pose a threat to the personal safety of the operator, making it impossible to carry out the experiment

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