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Material mechanical performance measurement device and pressing head assembly and measurement method thereof

A technology of mechanical properties and indenters, which is applied in the field of measuring devices for mechanical properties of materials, can solve the problems of low precision, inaccurate test results, and inability to form portable and instrumented testing equipment, so as to achieve improved accuracy, accurate data, The effect of improving detection accuracy

Inactive Publication Date: 2016-06-29
金南辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to propose a device for measuring the mechanical properties of materials, its indenter assembly and its measuring method, so as to solve the problem of uniqueness in the above-mentioned prior art that cannot form portable and instrumented testing equipment, and the testing results are inaccurate and the accuracy is not accurate. advanced technical questions

Method used

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  • Material mechanical performance measurement device and pressing head assembly and measurement method thereof
  • Material mechanical performance measurement device and pressing head assembly and measurement method thereof
  • Material mechanical performance measurement device and pressing head assembly and measurement method thereof

Examples

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Embodiment 1

[0037] This embodiment proposes an indenter assembly for measuring the mechanical properties of materials, such as figure 1 and figure 2 As shown, it includes: an indenter 1 and an indenter rod 3 for applying pressure on the measured object to obtain an indentation, a sensor assembly for obtaining the pressure and depth of the indenter 1, and a sensor assembly for obtaining the indentation The image of the indentation and the optical assembly of the deformed size data of the measured object; wherein, the indenter rod 3 is a hollow structure, the optical assembly is arranged on the indenter rod 3, and the indenter 1 is made of a transparent material It is arranged at the end of the indenter rod 3 , and the optical imaging path of the optical assembly is consistent with the pressing direction of the indenter 1 .

[0038]The indenter assembly for measuring the mechanical properties of materials proposed in this embodiment is composed of an indenter rod 3, an indenter 1 and an o...

Embodiment 2

[0044] This embodiment proposes a device for measuring mechanical properties of materials, such as Figure 1-2 As shown, it includes a base, a column and a cantilever 5, a display screen arranged on the cantilever 5, a press plate test bench arranged on the base, the base, a column and the cantilever 5 are fixedly connected in sequence, and also includes a display screen arranged on the cantilever 5. The indenter for testing the mechanical properties of materials as described in Embodiment 1 on the above-mentioned cantilever 5.

[0045] The material mechanical property detection device proposed in this embodiment uses the above-mentioned material mechanical property detection indenter to measure the material mechanical property, so it has better accuracy than the existing detection device.

Embodiment 3

[0047] This embodiment proposes a method for measuring the mechanical properties of materials, which is measured by using the device for measuring mechanical properties of materials in the above-mentioned embodiment 2. The loading pressure drives the indenter through the indenter rod to depress the indenter in multiple times at equal depths, including:

[0048] S1: Pressing in to a predetermined depth h to stop pressing down, and stabilizing time t, measure the pressure P1, indentation depth h1 and indentation area S1 of the indenter 1 at this time, until all data are measured, and then execute step S2;

[0049] S2: unloading half of the indentation depth, the stabilization time t, measure the pressure P2, indentation depth h2 and indentation area S2 of the indenter 1 at this time, until all the data are measured, and execute step S3;

[0050] S3: press again to the predetermined depth h to stop pressing down, stabilize time t, measure the pressure P3, indentation depth h3 and ...

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Abstract

The invention discloses a material mechanical performance measurement device and a pressing head assembly and measurement method thereof. The pressing head comprises a pressing head body and a pressing head rod which are used for applying pressure on a measured object to obtain indentations, a sensor assembly used for obtaining the pressure and pressing depth of the pressing head body, and an optical assembly used for obtaining images of the indentations and deformation size data of the measured object. The pressing head rod is of a hollow structure. The optical assembly is arranged on the pressing head rod. The pressing head body is made of a transparent material and arranged at the end of the pressing head rod. The light imaging route of the optical assembly is consistent with the pressure applying direction of the pressing head body. Collection of real-time data of the optical assembly is achieved, real-time measurement data of multiple times can be achieved through the combination of the sensor assembly and the optical assembly, two characterization factors can be added to characterization of material mechanical performance, and the accuracy of mechanical performance detection is improved.

Description

technical field [0001] The invention relates to the technical field of material mechanical performance detection, in particular to a material mechanical performance measurement device, an indenter assembly and a measurement method thereof. Background technique [0002] Use the indentation method to measure the hardness or mechanical properties of materials. This is a standard hardness measurement method. When the indentation depth is given, the pressure is measured, and the hardness and mechanical properties of the material are estimated. The current testing instruments are mostly suitable for laboratories or some fixed The detection location, which leads to the destructiveness of the indentation method. It is necessary to sample the object to be detected and then go to a fixed location or laboratory for detection. It is not portable, so the applicable occasions are relatively limited. At present, this method For the existing portable instrumentation equipment, due to the di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/42G01N3/02
CPCG01N3/42G01N3/02
Inventor 金南辉
Owner 金南辉
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