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In situ tester for mechanical properties of small torsional fatigue materials with controllable magnetic field strength

A technology of torsional fatigue and magnetic field strength, applied in the direction of strength characteristics, scientific instruments, analytical materials, etc., can solve the problems of failure to realize magnetic field loading, large volume and in-situ observation, etc., and achieve compact structure, good compatibility, The effect of a compact instrument

Active Publication Date: 2018-04-17
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, most of the torsional fatigue test devices for materials are driven by servo motors, and the fatigue load is loaded by controlling the forward and reverse rotation of the motor through input electrical signals. The bulky size cannot realize in-situ observation, and the magnetic field loading cannot be realized.

Method used

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  • In situ tester for mechanical properties of small torsional fatigue materials with controllable magnetic field strength
  • In situ tester for mechanical properties of small torsional fatigue materials with controllable magnetic field strength
  • In situ tester for mechanical properties of small torsional fatigue materials with controllable magnetic field strength

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Embodiment Construction

[0027] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0028] see Figure 1 to Figure 7As shown, the small torsional fatigue material mechanical performance in-situ tester for controllable magnetic field strength of the present invention includes a precision drive unit, a transmission unit, a clamping unit, a magnetic field loading unit, a detection unit, and a support unit; the support unit consists of a base 20 and a support, which play a supporting role for other parts of the instrument; the precision drive unit is fixed on the side of the base 20 through a motor bracket 4, including a motor encoder 1, a disc motor 2, a reducer 3, and a motor encoder 1. The reducer 3 is respectively connected with the disc motor 2 to provide power for the whole instrument; the transmission unit is connected with the precision drive unit through the motor coupling 5, and is fixed on...

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Abstract

The invention relates to an in-situ tester for a mechanical property of a small-size torsional fatigue material with controllable magnetic field intensity and belongs to the field of a precise scientific instrument. The in-situ tester mainly consists of a precise driving unit, a driving unit, a clamping unit, a magnetic field loading unit, a detection unit and a supporting unit, wherein a motor of the precise driving unit is used for driving a rotating end of the clamping unit to rotate back and forth at a fixed angle through a speed reducer and a crank and rocker mechanism in the driving unit, so as to realize the torsional fatigue loading; the adjustment for the torsional fatigue reciprocating deflecting angle can be realized by changing the lengths of the crank, connecting rod and rocker in the crank and rocker mechanism; the adjustment for magnetic field intensity can be realized by changing the distance of the pole head and the magnetic field loading unit. The tester wholly has a horizontal structure, is simple and compact, is compatible with optical microscope and can be used for in-situ real-time observing the sample. A reliable test method is supplied for disclosing a mechanical property and fatigue damage system of the material under different magnetic field intensities.

Description

technical field [0001] The invention relates to the field of precision scientific instruments and the field of in-situ mechanical testing, in particular to a small in-situ testing instrument for the mechanical properties of torsional fatigue materials with controllable magnetic field strength. The torsional fatigue test can be carried out on materials under different magnetic field strengths and different torsion angles, and the integrated optical microscope can be used to observe the samples in situ in real time, providing a new method for revealing the mechanical properties and fatigue damage mechanism of materials under different magnetic field strengths. Reliable means of testing. Background technique [0002] The purpose of material research and synthesis is to meet the needs of human material civilization, and a specific material has its specific performance is the root of its use value. The research object of the mechanical performance test is the performance of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/26G01N3/04F16H21/40
CPCF16H21/40G01N3/04G01N3/26G01N2203/005
Inventor 赵宏伟刘先华霍占伟马志超刘长宜李柠王顺博代晓航吴迪苗淼
Owner JILIN UNIV
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