Micro-torque mechanical testing machine and method

A mechanical testing machine and testing machine technology, applied in the direction of applying stable torque to test the strength of materials, measuring devices, torque measurement, etc., can solve the problem that the torque resolution is difficult to meet, and achieve the effect of improving the torque resolution

Inactive Publication Date: 2011-07-20
INST OF MECHANICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the above tests involve torques generally less than 10 -3 N m
The torque resolution of traditional torsion testing machines is difficult to meet

Method used

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  • Micro-torque mechanical testing machine and method
  • Micro-torque mechanical testing machine and method
  • Micro-torque mechanical testing machine and method

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Embodiment Construction

[0038] Embodiments of the present invention are described in detail below in conjunction with accompanying drawings:

[0039] figure 1 Shown is a schematic diagram of the system structure of the micro-torque mechanical testing machine provided by the present invention, including a control device and a testing machine host C, and the control device includes a computer A and a controller B. The test software is installed on the computer A, which is used to set the test method and analyze and process the experimental data; the controller B is used for the data communication between the computer and the test machine host, including the power amplification module, signal acquisition module, signal generation module, and signal conditioning module . The power amplification module is used to amplify the signal generated by the signal generation module, and then transmits it to the coil in the main machine of the testing machine; the signal generation module is connected to the compu...

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Abstract

The invention relates to a micro-torque mechanical testing machine and method. The testing machine comprises a control device and a testing machine host, wherein the control device is used for setting a testing method, sending a command to the testing machine host and analyzing and processing test data obtained from the testing machine host; and the testing machine host is used for loading a test sample. The testing method comprises the following steps of: controlling a signal generating module to generate a voltage signal through customized testing software, and driving the testing machine host to work after conditioning and amplifying; acquiring an angle signal and a coil driving signal by a signal acquisition module; converting the acquired angle signal into a rotation angle, and converting the acquired coil driving signal into a torque; and carrying out data processing according to a mechanical model to obtain a shear stress-shear strain curve of the test sample, thereby further calculating shear modulus and shear strength. By adopting electromagnetic driving and torque measuring ways, the torque resolution of the torque testing machine is greatly improved.

Description

technical field [0001] The invention relates to an instrument for testing the mechanical properties of micro-scale materials or structures and a testing method thereof, in particular to an instrument and a testing method for testing the mechanical properties of micro-scale samples in a twisting manner. Background technique [0002] At present, the torsional mechanical performance test of materials is generally carried out by torsion material testing machine. Depending on the matching torque sensor, the torque range of this type of testing machine ranges from 10 0 Nm to 10 3 Nm ranges, which can meet the needs of engineering circles for torsion testing of macro-scale specimens. However, since the traditional torsion material testing machine uses a strain-type torque sensor to measure the torque, that is, the strain gauge is used to measure the deformation of the elastic element to measure the torque. In principle, it is difficult to continue to improve the resolution. At p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/22G01L3/00
Inventor 郇勇张泰华
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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