Test sample for measuring plate Bauschinger effect, test fixture and test method

A technology of Bauschinger effect and test fixture, which is applied in the direction of applying stable torsion to test the strength of materials, measuring devices, and analyzing materials. Simple, easy-to-use, simple-to-structure effects for testing

Active Publication Date: 2021-12-21
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for thin-walled plate materials, it is easy to cause instability during the compression process, and it is difficult to determine the accurate stress-strain curve
[0004] In response to the above defects, many documents have proposed solutions, but they all have the same

Method used

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  • Test sample for measuring plate Bauschinger effect, test fixture and test method
  • Test sample for measuring plate Bauschinger effect, test fixture and test method
  • Test sample for measuring plate Bauschinger effect, test fixture and test method

Examples

Experimental program
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Embodiment

[0047] Embodiment: This embodiment provides a high-strength steel plate as a test fixture that matches the high-strength steel plate, and uses the test fixture to clamp the test sample to detect the Bauschinger effect of the test sample;

[0048] First, if figure 1 As shown, the test sample is specifically a square high-strength steel plate 1 with a length of 140 mm and a width of 140 mm. The plate 1 is provided with two axisymmetric semi-annular grooves 1-2, and a clamp is formed between the two semi-annular grooves 1-2. Holding area 1-3, two semi-annular grooves 1-2 form an active area 1-4, such as figure 1 As shown in A, the junction of the two semi-annular grooves 1-2 is two grooves 1-5, and the grooves 1-5 are arc grooves, and as figure 2 As shown, the arc groove is the bridge 1-6 of the two semi-annular grooves 1-2, and the reserved thickness of the bridge 1-6 is 1mm;

[0049] More specifically, such as figure 1 As shown, a number of first screw holes 1-7 and a numbe...

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Abstract

The invention discloses a test sample for measuring the Bauschinger effect of a plate. The test sample specifically comprises the plate, two semi-annular grooves and two grooves, wherein the two semi-annular grooves are located in the plate, the two semi-annular grooves are symmetrically arranged, a clamping area is formed between the two semi-annular grooves, and an acting area is formed outside the two semi-annular grooves; the two grooves are located at the joint of the two semi-annular grooves, and the two semi-annular grooves are located at the joint of the two semi-annular grooves; meanwhile, the invention further discloses a testing clamp and a testing method which are matched with the testing sample and used for measuring the plate Bauschinger effect. The test sample and the test fixture disclosed by the invention are simple in structure, and by combining with the test method, the Bauschinger effect test of the plate is simple, efficient, accurate and easy to use.

Description

technical field [0001] The invention relates to the technical field of plastic forming of metal materials, in particular to a test sample, a test fixture and a test method for measuring the Bauschinger effect of plates. Background technique [0002] During the processing of metal materials, there will be more complex loading processes, such as stretching, torsion, compression, etc. In order to ensure the stability of metal materials during processing, it is necessary to fully evaluate the various mechanical properties of metal materials. test. The Bauschinger effect is a mechanical property of metal materials. Specifically, metal materials undergo pre-loading to produce a small amount of plastic deformation, and then load in the same direction after unloading. The specified residual stress (elastic limit or yield strength) increases, and reverse loading, The phenomenon that stipulates that the residual stress is reduced (especially the elastic limit is almost reduced to zer...

Claims

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Application Information

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IPC IPC(8): G01N3/04G01N3/22G01N3/02G06F30/23
CPCG01N3/04G01N3/22G01N3/02G06F30/23G01N2203/0003G01N2203/0021G01N2203/0075G01N2203/0282G01N2203/0676G01N2203/0682G06F2113/24
Inventor 梁策韩奇钢李义于开锋梁继才
Owner JILIN UNIV
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