Grips for creating stress in tubular test pieces

Abstract

The invention relates to stress corrosion testing of pipeline members used in the fields of aerospace, automobiles and the like. The invention provides a clamp used for generating stress in a tubular test piece to overcome the problem of non-uniform specifications of pipeline connecting pieces used in stress corrosion testing of pipeline connecting pieces and to improve testing efficiency. The clamp comprises a main body; at least a pair of clamping members, wherein the pair of clamping members are spaced apart and maintained in the main body and at least one tubular test piece is clamped between the pair of clamping members; and at least one force application member which applies force on the tubular test piece so as to generate stress in the tubular test piece. Each clamping member comprises an upper clamping block and a lower clamping block. Each side of the tubular test piece is fixedly clamped between the upper clamping block and the lower clamping block.

Description

technical field [0001] The invention relates to the stress corrosion test of pipeline parts in the fields of aerospace, automobile, etc. The stress corrosion test of pipeline parts can be applied to pipeline parts or related products in the fields of weapons, electronics, rail transportation, etc., and the invention especially relates to pipelines Connector stress corrosion test tooling. Background technique [0002] Explanation of technical terms [0003] Stress corrosion: the process in which the test piece is subjected to salt spray corrosion under a given stress state; [0004] Piping parts: the various components involved in the piping system, such as conduits, pipe joints, and nuts. [0005] With the continuous development of aerospace technology, the comprehensive performance of piping parts, one of its important system parts, has attracted more and more attention. Therefore, its performance testing items have become more complete, and stress corrosion is one of th...

AI Technical Summary

Problems solved by technology

Generally speaking, there are many specifications of pipe fittings, and it is difficult to unify stress corrosion tooling; during the test, multiple pipe fittings as test pieces need to be placed in parallel, so it is not easy to arrange uniformly

Therefore, it is necessary to design the stress corrosion test tooling to solve the problem that the specifications of the piping parts are not uniform and the piping parts need to be paralleled during the test

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