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Horizontal type measuring apparatus for Young's modulus

A technology of Young's modulus and measuring instrument, which is applied in the field of horizontal Young's modulus measuring instrument, can solve the problems of shaking of the measuring frame, large error of measurement results, and bulky instrument, so as to improve the accuracy of measurement and simplify the error Calculation, the effect of reducing manufacturing costs

Inactive Publication Date: 2008-06-11
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this vertical pull structure is that the instrument is heavy and occupies a large area. When adding or subtracting weights, it is easy to cause the measuring frame to shake, the verticality of the instrument is not easy to control, and it is difficult to find the image of the scale during operation, read and add or subtract. The weights are located in two places, so the operator needs to repeatedly run between the telescope and the measuring frame, resulting in congestion and confusion in the laboratory, optical levers must be used in the measuring device, the calculation formula of Young's modulus is complicated, and the error of the measurement result Too big
This application applied for "Inverted Young's Modulus Measuring Instrument" on July 25, 2002, patent number: ZL02133511.7 and "Wall-mounted Young's Modulus Measuring Instrument" patent number ZL03135690 on August 29, 2003 .7. Although some defects have been overcome, it is very difficult to find the scale image from the field of view of the telescope. The biggest difficulty in this operation has not been solved. In addition, the operator still needs to run back and forth repeatedly, and the measurement must rely on the optical lever
The measurement calculation formula is complicated, and the problem of large measurement error has not been solved

Method used

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  • Horizontal type measuring apparatus for Young's modulus
  • Horizontal type measuring apparatus for Young's modulus
  • Horizontal type measuring apparatus for Young's modulus

Examples

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Embodiment

[0016] Example: The steel wire head fixing plate and the pulley fixing plate are formed by casting. The steel wire head fixing plate is fixed to one end of the desktop with its own clamping bolts, and then the pulley frame equipped with pulleys is fixed by its own clamping bolts. After the other end of the tabletop, take a length of 1.2 times the length of the tabletop to be tested, tie a knot at one end, pass the other end through the wire head fixing plate, bypass the pulley and connect the weight plate to make the weight plate Measure below the end of the table. The weight plate must be pre-loaded with a weight of 1kg to straighten the steel wire. Then use a light-colored pen to draw a horizontal mark on the steel wire to be tested. The color of the mark is white, the width of the mark is 1mm, and the position of the mark is set at 0.2m from the pulley. Adjust the position of the wire head fixing plate and the pulley frame. Make the steel wire to be measured parallel to the edg...

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Abstract

A horizontal Young's modulus measurer can measure Young's modulus of steel wire conveniently by applying horizontal drawing method and utilizing the reading microscope. The present invention decreases two moduluses to be tested, so measurement and calculation are simplified and system error of measurement can be decreased.

Description

1. Technical Field [0001] The invention relates to a Young's modulus measuring instrument in university physics experiments, in particular to a horizontal Young's modulus measuring instrument with a horizontal measuring frame. 2. Background technology [0002] Currently known, Young's modulus measuring instruments that use steel wire as the object to be measured are all vertical pull structures. The disadvantage of this vertical pull structure is that the instrument is bulky and covers a large area. When adding or subtracting weights, it is easy to cause the measurement frame to shake. The verticality of the instrument is not easy to control, and the image of the scale during operation is difficult to find, read, and add or subtract. The weights are located in two places, so the operator needs to repeatedly run between the telescope and the measuring frame, which causes crowded and chaotic laboratories, the optical lever must be used in the measuring device, the calculation formu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/14G01N21/00
Inventor 梁德富何原
Owner SICHUAN UNIV
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