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High-speed tensile test fixture

A test fixture and high-speed stretching technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, measuring devices, etc. Problems such as poor neutrality, to achieve good neutrality, ensure neutrality, and accurate test requirements

Active Publication Date: 2021-04-23
CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sleeve in the first type of fixture is mostly integrally formed, which is not easy to meet samples of different sizes, and there is a gap between the guide rod and the sleeve, resulting in poor alignment; the clamping effect of the second type of fixture is not particularly ideal

Method used

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include...

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Abstract

The invention provides a high-speed tensile test fixture. The high-speed tensile test fixture comprises a static fixture part and a dynamic fixture part; the static fixture part is connected to a static part of a testing machine and clamps one end of a test sample piece; and the dynamic clamp part is connected to the dynamic part of the testing machine and clamps the other end of the test sample piece. According to the high-speed tensile test fixture disclosed by the invention, the flexibility suitable for test samples with different sizes can be provided, and good centering performance is ensured, so that flexible and accurate test requirements can be met.

Description

technical field [0001] The invention belongs to the technical field of material testing, in particular to a fixture suitable for high-speed tensile testing. Background technique [0002] At present, the transportation industry has high requirements for the passive safety of structures. The verification of passive safety can be carried out through crash tests and simulation calculations. For the rail transit industry, the cost of vehicle-level crash tests is high, so simulation calculations are mainly used to verify passive safety. For simulation calculations, accurate material parameters are very important; and these material parameters are mainly obtained by high-speed tensile tests of materials. During the high-speed tensile test, the strength, stroke, and precision of the fixture directly affect the accuracy of the test results. [0003] The existing material dynamic tensile test fixtures generally include the following two types: one has a long guide rod at one end an...

Claims

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Application Information

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IPC IPC(8): G01N3/04G01N3/08
CPCG01N3/04G01N3/08G01N2203/0017G01N2203/04
Inventor 陈刚王青权杜洪军敖文宏
Owner CRRC CHANGCHUN RAILWAY VEHICLES CO LTD