Metal Young modulus measuring instrument

Abstract

Provided in the invention is a metal Young modulus measuring instrument comprising a metal wire stress mechanism, an optical lever mechanism and a light source irradiation mechanism. The metal wire stress mechanism comprises an iron support base, a first iron support vertical rod, a second iron support vertical rod, an iron support cross rod, an upper end clamp, a metal wire, a horizontal objective table, a middle clamp, a lower end clamp, a weight hook and a weight, wherein the weight hook and the weight are connected with the lower end clamp. The optical lever mechanism comprises an opticallever front foot, an optical lever rear foot and a plane mirror, the optical lever rear foot is arranged at the top of the middle clamp, and the optical lever front foot is arranged on the horizontalobjective table; the light source irradiation mechanism comprises a third iron stand, a fourth iron stand and a laser, wherein the third iron stand, the fourth iron stand and the laser are arranged right in front of the plane mirror. Incident laser of the laser is emitted to the plane mirror and then the laser is changed into reflected laser irradiated on a scaleplate. According to the metal Youngmodulus measuring instrument, the metal Young modulus can be measured; the experimental principle is simple; the experimental difficulty is low; the measurement is convenient; and the operation is easy.

Description

technical field [0001] The invention relates to the field of metal Young's modulus measurement, in particular to a metal Young's modulus measuring instrument. Background technique [0002] In the laboratory, the measurement of the Young's modulus of metal is a common experimental project in the physics laboratory. The experimental principle is to use the magnification of the optical lever to observe the image of the scale in the plane mirror of the optical lever through the telescope. The key to measurement is to find out the image of the scale in the plane mirror. Since the scale is fixed near the telescope, the distance between the telescope and the optical lever is generally If it is larger than 2 meters, it will take a long time to adjust the left and right, up and down positions of the telescope, adjust the horizontal angle between the optical axis of the telescope and the optical axis of the plane mirror, and the angle between the vertical direction during the experime...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a solution in order to solve the problems of difficult experimental adjustment and complicated instrument adjustment in measuring the Young's modulus of metal by optical lever method

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