In-situ pull/press-torque combined load material micromechanics test platform

A test platform and composite load technology, applied in the direction of testing material strength by applying stable tension/pressure, testing material strength by applying stable torsion, etc., can solve problems that do not involve in-situ observation and nanoscale mechanical properties of materials and other problems, to achieve the effect of good application development prospects, compact structure, and controllable angular strain rate

Active Publication Date: 2014-01-22
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional tensile machines and shear testing machines are aimed at macro-scale specimens, which do not involve the study of the mecha

Method used

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  • In-situ pull/press-torque combined load material micromechanics test platform
  • In-situ pull/press-torque combined load material micromechanics test platform
  • In-situ pull/press-torque combined load material micromechanics test platform

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Embodiment Construction

[0025] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0026] see Figure 1 to Figure 5 As shown, the in-situ tensile / compression-torsion composite load material micromechanics test platform of the present invention includes a test platform base 40, a precision loading unit, a detection control unit, a clamping and a connection unit, and the precision loading unit includes a torque loading unit. The unit and the tension-compression loading unit are composed of precision DC servo motors Ⅰ, Ⅱ9, 17, secondary enveloping worm gear pairs Ⅰ, Ⅱ, precision ball screw pairs, and precision ball linear guides, among which precision DC servo motors Ⅰ, Ⅱ9 , 17 can provide high-resolution torque and angular displacement output, and the secondary enveloping worm gear pair Ⅰ can provide a large reduction ratio of 2500:1, which can greatly increase the output power of precision DC ser...

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Abstract

The invention relates to an in-situ pull/press-torque combined load material micromechanics test platform and belongs to the field of material mechanics tests. The in-situ pull/press-torque combined load material micromechanics test platform consists of a base, a precise loading unit, a detection control unit and a clamping and connecting unit, wherein the precise loading unit comprises a torque loading unit and a pull-press loading unit and can be used for realizing the independent and combined loading of pull-press loads and torque loads; aiming at the pull-press loads and the torque loads, the detection control unit respectively uses a pull pressure sensor and a torque sensor to perform load detection and is combined with a contact-type capacitance displacement sensor, a circular grating ruler and a photoelectric encoder so as to monitor and control a loading mechanism. The in-situ pull/press-torque combined load material micromechanics test platform is compact in structure, small in size and controllable in strain rate, and can be used for performing in-situ monitoring on microtexture structural changes, deformation damage mechanisms and performance evolution laws of a material under the action of the combined load, so that an effective test method for revealing the nanoscale mechanics characteristics and damage mechanisms of the material under an approximate service condition is provided.

Description

Technical field [0001] The invention involves the field of material mechanics testing, and specially involves a micro-mechanical testing platform for the original pull / pressure-torsional compound load.Under the dynamic monitoring of solid -state materials such as scanning electronic microscopes, Jinjian microscope, RAMAN spectrometer, X -ray diffraction instrument and other solid -state material performance, the effect of stretching / compression load, torsion load effects, especially stretch / compression and twisting composite loads under the dynamic monitoring instrumentUnder the common action, the micro -organizational structure, deformation damage mechanism, and performance evolution of the sample material of the test parts are combined with the detection control unit to synchronize the precision detection, analysis and closed -loop control of the load / displacement signal.Through the invention, the micro deformation, damage and fracture process of the material can be monitored in...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/22
Inventor 赵宏伟刘宏达程虹丙鲁帅杨倚寒邵明坤高景张霖佟达
Owner JILIN UNIV
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