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Sandglass drainage method for measuring Young modulus of metal wire

A technology of Young's modulus and metal wire, which is applied in the field of testing the performance parameters of metal wire, can solve problems such as difficulties for students, small elongation, and influence on students' experimental results, and achieve the effect of simple operation and simple and intuitive method

Inactive Publication Date: 2014-06-11
SICHUAN UNIV
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Problems solved by technology

[0002] When measuring the Young's modulus of the metal wire in the physical experiment, because its elongation is relatively small, the optical lever is generally used to zoom in and observe through the telescope. Because it is difficult for some students to adjust the telescope to find the image of the ruler, it affects The experimental effect of this part of the students

Method used

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  • Sandglass drainage method for measuring Young modulus of metal wire

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Embodiment Construction

[0009] Add enough water to the water container 5 so that the water can just flow out from the overflow port 6. At this time, the cylinder 4 has been partially immersed in the water. When the overflow port no longer drips, pour out the water in the water cup 7, and measure the empty water cup at this time. quality.

[0010] The length of the wire 2 is the length from the wire fixing point 1 to the upper surface of the cylinder 4;

[0011] First weigh the quality of the sand, then slowly pour the sand into the sand storage bucket 8, the weight will increase and cause the wire to elongate, so that the cylinder 4 will move down in the water container 5 to displace more water. Discharge from the overflow port 6 into the water cup.

[0012] Use a physical balance to weigh the mass of water in the water cup 7. The quality difference between the two water cups is the displacement caused by the downward movement of the cylinder. According to the quality of the drainage and the area of...

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Abstract

The invention discloses a sandglass drainage method for measuring the Young modulus of a metal wire, and relates to measurement of the Young modulus of a metal wire. Finding the image of a scale by adjusting a telescope in a metal wire Young modulus experiment is difficult for parts of students. The technical scheme of the sandglass drainage method includes that a cylinder with a large area is fixed onto a metal wire, the bottom of the cylinder is soaked into water, the water can flow out of an overfall gap at the moment, the metal wire is elongated by a certain quantity of weights, drainage quantity is increased, the water drained by the aid of the weights flows into a cup through the overfall gap, and the elongation of the metal wire can be calculated by the aid of the quantity of the water collected by the overfall gap and the area of the cylinder. The sandglass drainage method has the advantages that the elongation of the metal wire is enlarged by times (of the area of the cylinder or the metal wire), the method is simple and visual, and operation is simple and practicable.

Description

technical field [0001] The invention relates to the field of testing metal wire performance parameters, especially the measurement of the Young's modulus of the metal wire. Background technique [0002] When measuring the Young's modulus of the metal wire in the physical experiment, because its elongation is relatively small, the optical lever is generally used to zoom in and observe through the telescope. Because it is difficult for some students to adjust the telescope to find the image of the ruler, it affects The experimental effect of this part of the students. Contents of the invention [0003] In order to overcome the difficulty of observing the scale with the telescope, the present invention adopts the drainage method to amplify the elongation of the metal wire. [0004] The technical solution adopted by the present invention to solve its technical problems is: due to the elongation of the wire due to the pulling force, if a cylinder with a larger area is fixed on...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09B23/10G01N3/14G01B5/08G01B13/02
Inventor 胡再国邹旭敏穆万军
Owner SICHUAN UNIV
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