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Axial push-pull fatigue test cramp for metal thin wall pipe sample

A fatigue test, sample axial technology, applied in the direction of analyzing materials, measuring devices, instruments, etc., can solve the problems of large plate fixture size, complex processing technology, laborious and other problems

Active Publication Date: 2009-02-04
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The size of the plate fixture is large and the processing technology is complicated. It is very time-consuming and laborious to reprocess a pair of plate fixtures

Method used

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  • Axial push-pull fatigue test cramp for metal thin wall pipe sample
  • Axial push-pull fatigue test cramp for metal thin wall pipe sample
  • Axial push-pull fatigue test cramp for metal thin wall pipe sample

Examples

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Embodiment Construction

[0012] The device of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments:

[0013] See attached Figure 1~3 As shown, this fixture for axial tension and compression fatigue test of metal thin-walled pipe samples can match the plate fixture of high frequency fatigue testing machine, and its feature is that it is composed of a pair of wedge-shaped clamps with concave and convex surfaces respectively. Consisting of blocks 1 and 2, wedge-shaped clamping blocks 1 and 2 with concave and convex surfaces contact with the thin-walled pipe sample according to the specific radian of the sample. Design a concave surface 3 and a convex surface 4, and wedge-shaped clamping blocks with convex surfaces The thickness of the 2 is greater than that of the wedge-shaped clamping block 1 with a concave surface. After the concave-convex surface is clamped, the center of gravity of the arc surface is just located at 1 / 2 of the ...

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PUM

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Abstract

The invention discloses a thin-wall metal tube sample axial-direction tension and compression fatigue test fixture, comprising a pair of wedge-type clamp splices which have a concave surface and a convex surface respectively, and the test fixture matches the plate grip of a high-frequency fatigue test machine. The features include: the test fixture comprises a pair of wedge-type clamp splices which have a concave surface and a convex surface respectively; the contact surfaces between the wedge-type clamp splices and the thin tube wall are designed into a concave surface and a convex surface according to the specific radian of the sample; the thickness of the wedge-type clamp splice which has a convex surface is greater than the wedge-type clamp splice which has a concave surface; after the concave surface and the convex surface are clamped tight, the gravity of the cambered surface is right located at 1 / 2 of the integrated body of the two wedge-type clamp splices. If the fixture is adopted, the workload of fixture processing and transformation is reduced to a large extent. Thin-wall metal tube sample axial-direction tension and compression fatigue test can be conducted on an existing high-frequency fatigue testing machine.

Description

technical field [0001] The invention is a jig for axial tension-compression fatigue test of metal thin-walled pipe samples, which is used for the axial tension-compression fatigue test of metal thin-wall pipe samples of electromagnetic resonance type high-frequency fatigue testing machine, and belongs to the structure and forming technology of products field. Background technique: [0002] The current fatigue testing machine is only equipped with clamps for flat and bar samples, and the fatigue samples directly sampled from metal pipes are thin-walled curved samples with a certain curvature. The deformation of the thin-walled curved surface cannot be tested. Therefore, in order to carry out the fatigue test of the thin-walled sample with a certain arc surface, a pair of fixtures must be designed. The frequency fatigue testing machine can start vibration normally. [0003] The current high-frequency fatigue testing machine is mainly based on the electromagnetic resonance f...

Claims

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Application Information

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IPC IPC(8): G01N3/04
Inventor 胡本润叶序彬郭洪全刘建中
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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