Young modulus with laser reflection replacing telescopes for measuring metal wires

A technology of Young's modulus and laser reflection, which is used in measuring devices, using optical devices, and applying stable tension/pressure to test the strength of materials, etc. problem, to achieve the effect of rapid and intuitive adjustment, rapid measurement and obvious effect

Inactive Publication Date: 2012-08-01
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problem of using a telescope to observe is: the adjustment is complicated, causing some students to be unable to find the image of the scale, making the experiment impossible to proceed, too many students who do not adjust well will affect the progress of the experimental course

Method used

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  • Young modulus with laser reflection replacing telescopes for measuring metal wires
  • Young modulus with laser reflection replacing telescopes for measuring metal wires

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Experimental program
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Embodiment Construction

[0008] The laser light 9 emitted by the adjustment laser 10 passes through the aperture 8 with an inner diameter of 2 mm fixed on the scale 7 .

[0009] The metal wire 3 is fixed on the door-shaped fixed frame 1 through the metal wire fixing clip 2, and a metal fixed platform 5 is arranged in the middle of the door-shaped fixed frame 1. A small clamp is used for the metal wire, and the upper surface of the clamp is roughly the same as the metal fixed platform 5. The same height, the back foot of the reflector 4 support of the light lever is on the fixture, the front foot of the reflector support is on the metal fixed platform 5, the addition and subtraction of the weight 6 causes the length of the wire to change, and the up and down movement of the fixture causes the reflector 4 Changes in the pitch angle of the reflector cause changes in the normal direction of the mirror, resulting in changes in the incident angle of the laser light 9, prompting changes in the position of the...

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Abstract

The invention discloses a Young modulus with laser reflection replacing telescopes for measuring metal wires and relates to the field of measuring of Young modulus. The problem existing in telescope observation is mainly that: regulating is complex, and a part of students cannot find the image of a scaleplate so that progress of an experiment class is affected. The technical scheme of the Young modulus with laser reflection replacing telescopes for measuring metal wires is that laser emitted by a semiconductor laser passes through a diaphragm which has the inner diameter of 2mm and the length of 30mm and is fixed on the scaleplate, the laser penetrates through the diaphragm and then is irradiated on a plane mirror of an optical lever, the horizontal direction of the plane mirror is adjusted so as to lead the reflected laser to be irradiated on the scaleplate, pitching of the plane mirror can be adjusted so that the reflected laser can be located near the middle position of the scaleplate, the reading of the scaleplate where the laser is located is recorded, weights are added, and then the reading of the scaleplate where the laser is located after the weights are added is recorded. The Young modulus with laser reflection replacing telescopes for measuring metal wires has the advantages of being simple in operation, fast and audio-visual in adjusting, obvious in effect of force action, economic in device and fast in measuring.

Description

technical field [0001] The invention relates to the measurement field of Young's modulus, in particular to the measurement of the Young's modulus of metal wires with relatively large Young's modulus. Background technique [0002] In the Young's modulus measurement experiment in the university physics experiment course, a telescope is generally used to observe the plane mirror surface of the light lever after the elongation of the steel wire tilts, so that the normal line of the plane mirror changes, so that the image of the scale is on the cross wire of the reticle of the telescope The corresponding scale changes. The steps of using a telescope to observe are: adjusting the telescope is to see the image of the scale reflected from the plane mirror in the field of view, and the adjustment step is to observe the plane mirror first, then let the mirror surface enter the market, and then adjust the focal length to find the image of the scale. The main problem of using a telesco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/14G01B11/16
Inventor 胡再国穆万军雍志华
Owner SICHUAN UNIV
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