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Multifunctional hyperelastic film biaxial tension test bench

A biaxial stretching and superelasticity technology, applied in the direction of applying stable tension/pressure to test material strength, strength characteristics, measuring devices, etc., can solve the problems affecting test accuracy, sample edge and corner distortion, and high detection , to achieve the effect of improving test accuracy, preventing loosening, and reducing manufacturing and installation errors

Pending Publication Date: 2021-01-12
NANJING COLLEGE OF INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The structure of the multi-point radial tensile test device for circular thin slices is complex, and special samples need to be made; it is difficult to control the strain process in the expansion tensile test, which makes it difficult to supplement and obtain complete strain data for fitting the hyperelastic constitutive equation. Because the deformation is not uniform along the spherical contour, higher requirements are put forward for the detection; while the existing biaxial tensile tests such as square films generally use two points on the corners to fix, and when the film stretching rate is large, the edge of the sample will be caused. Corner distortion affects test accuracy

Method used

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  • Multifunctional hyperelastic film biaxial tension test bench
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  • Multifunctional hyperelastic film biaxial tension test bench

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Effect test

Embodiment 1

[0038] It should be noted that if there is a directional indication (such as up, down, left, right, front, back...) in the embodiment of the present invention, it is only used to explain the relationship between the components in a certain posture. If the specific posture changes, the directional indication will also change accordingly.

[0039] A multi-functional superelastic film biaxial tensile test bench, including a workbench 2, a force sensor 3, a screw nut mechanism 9, a driving mechanism for driving the screw nut mechanism 9 to rotate, and a telescoping mechanism driven by the screw nut mechanism 9 Telescopic mechanism, angle adjustment mechanism 4 for adjusting the angle of telescopic mechanism and clamping mechanism for clamping elastic film,

[0040]The driving mechanism, the lead screw nut mechanism 9 and the slideway bracket 10 are fixedly arranged on the workbench 2, the telescopic mechanism is slidably connected to the slideway support 10, the angle adjustment m...

Embodiment 2

[0069] The difference from Embodiment 1 is that in this embodiment, the right angle included angle of the inner slideway 5 is fixedly arranged on the right angle adjustment mechanism, the right angle included angle of the outer slideway 7 is fixedly arranged on the left angle adjustment mechanism, and the force sensor 3 The sensor support 31 is fixedly installed on the left slide part, the upper end of the force sensor 3 is fixedly connected to the left angle adjustment mechanism through the sensor connection block 32, and the right angle adjustment mechanism is fixedly installed on the right slide part through the L-shaped bracket 8.

Embodiment 3

[0071] The difference from Embodiment 1 is that in this embodiment, the right angle included angle of the inner slideway 5 is fixedly arranged on the left angle adjustment mechanism, the right angle included angle of the outer slideway 7 is fixedly arranged on the right angle adjustment mechanism, and the force sensor 3 The sensor support 31 is fixedly installed on the right slide part, the upper end of the force sensor 3 is fixedly connected to the right angle adjustment mechanism through the sensor connection block 32, and the left angle adjustment mechanism is fixedly installed on the left slide part through the L-shaped bracket 8.

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Abstract

The invention discloses a multifunctional hyperelastic film biaxial tension test bench, which comprises a workbench, a force sensor, a lead screw nut mechanism, a transmission mechanism for driving the lead screw nut mechanism to rotate, a telescopic mechanism driven by the lead screw nut mechanism to stretch out and draw back, two angle adjusting mechanisms for adjusting the angle of the telescopic mechanism, and a clamping mechanism, the two angle adjusting mechanisms comprise a left angle adjusting mechanism and a right angle adjusting mechanism, the transmission mechanism, the lead screw nut mechanism and a sliding way support are fixedly arranged on the workbench, the transmission mechanism is meshed with the lead screw nut mechanism, the left angle adjusting mechanism is fixedly arranged at the left end of the lead screw nut mechanism through a force sensor, or the right angle adjusting mechanism is fixedly arranged at the right end of the lead screw nut mechanism through the force sensor, the two ends of the telescopic mechanism are each fixedly connected with one angle adjusting mechanism, and the clamping mechanism is slidably arranged on the telescopic mechanism. The device is used for detecting biaxial tensile test items of elastic film materials with different length-width ratios.

Description

technical field [0001] The invention relates to a multifunctional superelastic film biaxial tensile test bench, which belongs to the technical field of experimental equipment. Background technique [0002] The equibiaxial tensile test is the main method for elastic film materials to obtain their mechanical and physical properties, and its pre-stretching is also a necessary condition for the main functional component materials of flexible actuators and sensors to achieve the design function requirements. According to the data, the typical equibiaxial tensile test methods suitable for elastic diaphragm materials mainly include circular sheet multi-point radial tensile test, expansion tensile test, and square film and other biaxial tensile test methods. [0003] The structure of the multi-point radial tensile test device for circular thin slices is complex, and special samples need to be made; it is difficult to control the strain process in the expansion tensile test, which ma...

Claims

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Application Information

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IPC IPC(8): G01N3/08G01N3/02G01N3/04
CPCG01N3/02G01N3/04G01N3/08G01N2203/0003G01N2203/0017G01N2203/005G01N2203/0258G01N2203/0282G01N2203/0423G01N2203/0676G01N2203/0682
Inventor 罗华安
Owner NANJING COLLEGE OF INFORMATION TECH
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