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Horizontal type measuring apparatus for Young's modulus

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

Inactive Publication Date: 2005-11-16
SICHUAN UNIV
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  • Description
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  • Application Information

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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

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Embodiment

[0016] Embodiment: The wire head fixing plate and the pulley fixing plate are casted, and the wire head fixing plate is fixed on one end of the desktop through the clamping bolts that come with it, and then the pulley frame with the pulleys is fixed through the clamping bolts that come with it After the other end of the desktop, take a section of steel wire to be tested whose length is 1.2 times the length of the desktop, tie a knot at one end, let the other end pass through the wire head fixing plate, go around the pulley and connect the weight plate, so that the weight plate Hanging down from the end of the table, the weight plate must be pre-loaded with 1kg of weight 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. Make the steel wire to be tested parallel to the edge of the table on th...

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Abstract

A horizontal Youngí»s modulus measurer can measure Youngí»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 horizontally placed measuring frame. 2. Background technology [0002] Currently known Young's modulus measuring instruments using steel wire as the object to be measured are all vertically pulled structures. The disadvantage of this vertical pull structure is that the instrument is heavy and occupies a large area. When adding and 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 and 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 devi...

Claims

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Application Information

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IPC IPC(8): G01N3/14
Inventor 梁德富黄建群
Owner SICHUAN UNIV
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