Method and device for testing brittleness of metal material
A metal material and brittleness technology, which is applied in the field of metal material brittleness testing, can solve the problems of not fully considering the impact of brittleness, inaccurate metal material brittleness index, etc., and achieve the effect of improving accuracy
Inactive Publication Date: 2018-12-18
沧州子芩信息科技有限公司
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Problems solved by technology
[0007] The main purpose of the present invention is to provide a method and device for testing the brittleness of metal materials to solve the problem of inaccurate metal material brittleness index due to the lack of sufficient consideration of the influence of changes in the metal material structure and stress environment on the brittleness of metal materials in the prior art The problem
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Embodiment 1
[0023] Embodiments of the present invention provide a method for testing the brittleness of metal materials, such as image 3 As shown, the method includes the following steps:
[0024] Step S101, using the brittleness index model to obtain the static brittleness index and dynamic brittleness index of the metal material.
[0025] Specifically, the above-mentioned static brittleness index comes from experimental analysis, and the dynamic brittleness index comes from the original measurement data. This implementation example first determines the basic characterization method of the brittleness index of the metal material, that is, the static brittleness index of the above-mentioned metal material and the dynamic brittleness index of the metal material .
[0026] Step S103, using the correction model with the structural characteristics of the metal material to convert the dynamic brittleness index to the dynamic and static brittleness index to generate the static brittleness ind...
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The invention discloses a method and device for measuring the brittleness of a metal material. The method comprises the steps of characterizing static brittleness indexes and dynamic brittleness indexes of the metal material by using a brittleness index model; carrying out dynamic and static brittleness index conversion processing on the dynamic brittleness indexes by using a correction model withmetal material structure characteristics and generating the static brittleness indexes of the metal material under the same stress condition; and correcting the static brittleness indexes of the metal material under the same stress condition by using an established brittleness stress correction model for the metal material and generating the static brittleness indexes of the metal material underdifferent stress conditions. According to the method and the device, the problem that the influence factors of a metal material structure and a stress environment change on the brittleness of the metal material are not considered in the prior art is solved and the calculation accuracy of measuring the brittleness indexes of the metal material is improved.
Description
technical field [0001] The invention relates to the field of mechanical material testing, in particular to a method and device for testing the brittleness of metal materials. Background technique [0002] The existing schemes for characterizing the brittleness index of metal materials have the following two defects: [0003] 1. The influence of the molecular structure and stress environment of metal materials on the brittleness of metal materials is not considered. [0004] 2. Directly use the dynamic parameters of metal materials to characterize the brittleness of metal materials. It seems to have avoided the technical problem of dynamic and static mechanical parameter conversion, but there are essential differences between the two parameters, and there are obviously obvious technical problems in the brittleness of dynamic parameters. In addition, although dynamic parameters can reflect changes in the structure and stress environment of metal materials to a certain extent...
Claims
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IPC IPC(8): G01N3/08
CPCG01N3/08G01N2203/0019
Inventor 刘伟
Owner 沧州子芩信息科技有限公司