Method and device for measuring Young's elastic modulus of material by using cantilever beam or overhanging beam

A Young's modulus of elasticity, cantilever beam technology, used in measuring devices, using a stable bending force to test the strength of materials, analyzing materials, etc. , to achieve the effect of low cost, simple device structure and easy processing

Active Publication Date: 2021-10-15
CHANGZHOU FENGZHI TEST TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The devices used in these methods all require knife-edge support beams, more equipment is needed to measure the deflection, the overall occupied area is also larger, and the processing accuracy and use conditions are relatively harsh.

Method used

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  • Method and device for measuring Young's elastic modulus of material by using cantilever beam or overhanging beam
  • Method and device for measuring Young's elastic modulus of material by using cantilever beam or overhanging beam
  • Method and device for measuring Young's elastic modulus of material by using cantilever beam or overhanging beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Such as image 3 , 4 As shown, the device of the present invention that utilizes a cantilever beam or an overhanging beam to measure Young's modulus of material comprises an operating table 1, a laser 2, a cantilever 3, a reflector 15 and a spot displacement measuring device 4, a cantilever 3 and a laser 2 are respectively installed on the console through a bracket, and a spot displacement measuring device 4 is provided on the bracket of the laser 2 . The free end of the cantilever beam 3 is provided with a reflector 15, and the laser beam emitted by the laser 2 can be reflected by the reflector 1 to the spot displacement measuring device 4. The reflector 1 is set perpendicular to the bottom surface of the cantilever beam, and the light spot displacement measuring device 4 is set perpendicular to the initial state of the cantilever beam 3. The light spot displacement measuring device 4 adopts a scale.

[0060] The method for measuring Young's modulus of elasticity of...

Embodiment 2

[0071] Such as Figure 5 , 6 As shown, the device of the present invention that utilizes a cantilever beam or an overhanging beam to measure the Young's modulus of material is similar to the structure in embodiment 1, and the difference is only that the reflector 1 is installed on the top surface of the free end of the cantilever beam 3 (parallel set on the bottom surface of the cantilever beam 3).

[0072] The method for measuring Young's modulus of elasticity of material with cantilever beam or outrigger beam of the present invention, comprises the steps:

[0073] 1) Processing the material into a rectangular cross-section beam, and then utilizing the rectangular cross-section beam to make a cantilever beam 3;

[0074] 2) Use step 1) to make the cantilever beam in this embodiment and assemble it into a device that utilizes the cantilever beam or the outrigger beam to measure the Young's modulus of elasticity of the material; The device is adjusted; so that the laser beam ...

Embodiment 3

[0084] Such as Figure 7 , 8As shown, the device of the present invention that utilizes a cantilever beam or an overhanging beam to measure Young's modulus of material is similar to the structure in embodiment 1, and the difference is only that the reflector 1 is installed on the bottom surface of the free end of the cantilever beam 3 (parallel to bottom surface), the spot displacement measurement device 4 is installed on the console 1 (parallel to the initial state of the cantilever beam), the laser 2 and the cantilever beam 3 are installed on the same bracket, and the laser 2 is located below the cantilever beam 3.

[0085] The method for measuring Young's modulus of elasticity of material with cantilever beam or outrigger beam of the present invention, comprises the steps:

[0086] 1) Processing the material into a rectangular cross-section beam, and then utilizing the rectangular cross-section beam to make a cantilever beam 3;

[0087] 2) Use step 1) to make the cantilev...

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Abstract

The invention discloses a method and a device for measuring Young's elastic modulus of a material by using a cantilever beam or an overhanging beam, the device comprises a laser, the cantilever beam or the overhanging beam, a reflector I and a light spot displacement measuring device, the free end of the cantilever beam or the overhanging beam is provided with the reflector I; a laser beam emitted by the laser can be reflected to the light spot displacement measuring device through the reflecting mirror I; the reflecting mirror I is parallel or vertical to the bottom surface of the cantilever beam or the overhanging beam; and the light spot displacement measuring device is parallel or vertical to the initial state of the cantilever beam or the overhanging beam. The device for measuring the Young's elastic modulus of the material by using the cantilever beam or the overhanging beam is simple and compact in structure and low in cost; according to the optical principle, the displacement of the free end of the cantilever beam or the overhanging beam after the load is applied is amplified, the applied load is small, materials cannot enter a plastic deformation area, and the obtained result is accurate; and the sample adopts a rectangular cross-section beam structure, so that the processing is convenient.

Description

technical field [0001] The invention belongs to the technical field of measuring Young's modulus of elasticity, and in particular relates to a method and a device for measuring Young's modulus of elasticity of a material by using a cantilever beam or an overhanging beam. Background technique [0002] Elastic modulus is an important characteristic quantity describing the relationship between material deformation and stress, and it is a parameter commonly used in engineering technology. The external force applied in the laboratory makes the deformation of the material very small, which is difficult to observe with the naked eye. At the same time, the excessive load will cause the material to undergo plastic deformation, and it must be measured by amplifying the small deformation. Most of the existing methods for measuring the elastic modulus are to use a universal machine to perform tension or compression experiments on the material, measure the elastic modulus of the material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/20G01N3/06
CPCG01N3/20G01N3/068G01N3/062G01N2203/0023G01N2203/0075G01N2203/0641G01N2203/0605
Inventor 翦知渐谢中周正贵
Owner CHANGZHOU FENGZHI TEST TECH CO LTD
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