Material load displacement detection method and device, computer equipment and storage medium
A load displacement and detection method technology, applied in the direction of measuring devices, analysis materials, instruments, etc., can solve the problems of performance index result error, increasing load displacement data value, affecting the displacement value of key points, etc.
Inactive Publication Date: 2020-10-30
邵小轩
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This method will increase or decrease the value of the load displacement data, especially the displacement value of the key point, which will cause errors in the calculated performance index results
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[0034] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application. Reference herein to an "embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present application. The occurrences of this phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is understood explicitly and implicitly by those skilled in the art that the embodiments described herein can be combined with other embodiments.
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The invention discloses a material load displacement detection method and device, computer equipment and a storage medium. The method comprises the following steps of: detecting a material through a material testing machine to obtain a load displacement number pair sequence; discarding data with errors at the initial part in the sequence; drawing a load displacement curve graph, then calculating the mean value of the slope of the data in the sampling interval section at the corresponding position on the curve, reversely extending at the curve starting point according to the mean value until the curve intersects with the horizontal axis, and then translating the curve until the intersection point coincides with the origin of coordinates to obtain a standard load displacement curve. Stress-strain data of each key point can be calculated to obtain a stress-strain diagram. After the processing, a standard load displacement curve can be obtained, and the calculated mechanical property valueis more accurate.
Description
technical field [0001] The invention belongs to the field of material performance testing, and in particular relates to a material load displacement detection method, device, computer equipment and storage medium. Background technique [0002] In the prior art, when material load testing is performed on a material testing machine, the starting point of the obtained load-displacement curve is not at the origin of the coordinates. According to the relevant standards for testing the mechanical properties of materials, the starting point of the curve should coincide with the origin of the coordinates. The existing processing method is Move the coordinate system horizontally and / or vertically so that the origin of the coordinates coincides with the starting point of the curve. This method will increase or decrease the value of the load displacement data, especially the displacement value of the key point, which will cause errors in the calculated performance index results. Cont...
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IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0017G01N2203/0019G01N2203/0023G01N2203/0021G01N2203/0025G01N2203/0075G01N2203/0682
Inventor 邵小轩潘毅峰
Owner 邵小轩