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Parallel disk material properties experiment device

A technology of material properties and experimental devices, applied in the direction of measuring devices, analyzing materials, strength characteristics, etc., can solve the problems of small range of materials and the initial stage of smart materials, and achieve the effects of large range of changes, accurate changes, and diverse functions

Inactive Publication Date: 2017-06-16
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are very few experimental equipments that can carry out material property experiments of extrusion and shear composite working modes, and limited by the experimental equipment, the range of materials that can be used for material experiments is small
In addition, research on the rheological properties of smart materials (magnetorheological fluids, magnetorheological elastomers, etc.) under extrusion is still in its infancy.

Method used

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  • Parallel disk material properties experiment device
  • Parallel disk material properties experiment device
  • Parallel disk material properties experiment device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] refer to figure 1 and 2 , a kind of parallel disc type material property experiment device, comprises a group of corresponding upper parallel disc 8, lower parallel disc 9 and pc machine; An extrusion loading motor 1 is fixedly installed on the upper end of an L-shaped frame 12, and is fixedly located on The vertical guide rail 5 of frame 12 is provided with the slide block 4 that can move along this guide rail, and the output shaft of extrusion loading motor 1 is connected with slide block 4 by coupling 2 and lead screw nut pair 3; The lower end of the lower end is fixed with a speed reducer 7 driven and connected by the shear loading motor 6, the output shaft of the speed reducer 7 is fixedly connected with the upper parallel disk 8, and the lower end of the lower parallel disk 9 passes through the torque sensor 10 in turn. and the pressure sensor 11 are fixed on the base of the L-shaped frame 12;

[0028] A linear displacement sensor 13 is provided on the slider 4,...

Embodiment 2

[0048] refer to image 3 , 4, adding the following settings to the structure of Example 1, material property experiments of smart materials such as magnetorheological fluids and magnetorheological elastomers can be realized. That is, it includes a linear Hall sensor 15 embedded on the surface of the lower parallel disk 9 and two excitation coils 16 that are respectively sleeved on the outer circumference of the upper parallel disk 8 and the lower parallel disk 9 and are respectively electrically connected to a DC power supply. The linear Hall sensor 15 communicate with the PC through the data acquisition card. The upper and lower parallel disks are made of magnetically permeable material.

[0049] Under this structural device, through the driving of the extrusion loading motor 1, the upper parallel disk 8 moves up and down to realize the extrusion of the measured material sample placed between the upper and lower parallel disks; through the shear loading motor 6 Driven to m...

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Abstract

The present invention relates to a kind of parallel disk type material characteristic experiment device that can realize the material characteristic detection based on shearing mode, extrusion mode and its composite mode, it comprises a group of corresponding upper and lower parallel disks and pc machine, is loaded by extrusion motor The drive is connected to the slider that can move up and down along the guide rail of the rack, and the reducer fixed at the lower end of the slider is driven and connected by the shear loading motor. The output shaft of the reducer is fixedly connected to the upper parallel disk. The lower end of the lower parallel disc is sequentially fixed on the base of the L-shaped frame through the torque sensor and the pressure sensor; the linear displacement sensor on the slider, the angular displacement sensor, the torque sensor and the pressure sensor on the output shaft of the reducer are respectively The data acquisition card is connected to the PC through communication, and the extrusion loading motor and the shearing loading motor are respectively controlled and connected to the PC through a driver. Steady and dynamic material property experiments in the shear mode, extrusion mode and compound mode of various materials can be realized on this device.

Description

technical field [0001] The invention relates to experimental equipment for dynamic mechanical analysis of materials, in particular to an experimental device for material properties based on shear mode, extrusion mode and composite mode. Background technique [0002] In the material property experiment, according to different test methods, there are mainly detection methods based on shear mode and extrusion mode. The test method based on the shear mode is to apply two parallel disks (or cylinders) rotating coaxially, place the material to be tested between the two disks, and use the relative rotation of the two disks to make the elastic body under test bear the shear force. The torque sensor detects the transmitted torque, calculates the shear stress and the corresponding shear rate, and further calculates the apparent viscosity, storage modulus, and loss modulus. The test method based on the extrusion mode is to use parallel discs to make relative pulling and approaching mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00G01N3/02
Inventor 庄晔冯明非聂士达王杨
Owner JILIN UNIV
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