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Simple portable photoelasticity teaching demonstration device based on single chip measurement

The technology of a demonstration device and a single-chip microcomputer is applied in the field of simple and portable photoelasticity teaching demonstration devices, which can solve the problems that the test device cannot visually display stress, etc., and achieve the effects of easy intuitive experience, simple structure, and good portability

Pending Publication Date: 2019-06-28
上海市行知实验中学 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The invention discloses a simple and portable photoelasticity teaching demonstration device based on single-chip microcomputer measurement, which is used to solve the problem that the test device in the prior art cannot visually display the stress

Method used

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  • Simple portable photoelasticity teaching demonstration device based on single chip measurement

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0019] figure 1 It is a schematic structural diagram of a simple and portable photoelasticity teaching demonstration device based on single-chip microcomputer measurement in the present invention, please refer to figure 1 , a simple and portable photoelasticity teaching demonstration device based on single-chip microcomputer measurement, which includes: a mounting frame 1, a light source 2, and two circular polarizing plates, and the two circular polarizing plates are relatively installed on the mounting frame 1; the light source 2 is arranged on the two circular polarizing plates On one side of the sheet, the light source 2 faces the two circular polarizing sheets.

[0020] Specifically, in one embodiment of the present invention, the installation frame 1 can be installed in the box body, and the side wall of the box body has a round hole, and a circular po...

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Abstract

The invention discloses a simple portable photoelasticity teaching demonstration device based on single chip measurement. The simple portable photoelasticity teaching demonstration device comprises amounting frame, a light source and two circular polarizers, wherein the two circular polarizers are oppositely mounted on the mounting frame; the light source is arranged on one side of the two circular polarizers; the light source faces the two circular polarizers. The simple portable photoelasticity teaching demonstration device solves the problem that a stress cannot be demonstrated by an experiment in the prior art; by virtue of a principle of birefringence, through arrangement of a testing frame between the two circular polarizers with different polarizing directions, arrangement of the light source on one side of the two polarizers and observation from the other side, plexiglass (acrylic) placed on the testing frame can generate a birefringence phenomenon after being stressed, and the intensity of the birefringence is observed and measured through a pair of circular polarizers of which the polarizing directions form a 90-degree angle, so that the magnitude of an object stress isworked out.

Description

technical field [0001] The invention relates to a test device, in particular to a simple and portable photoelastic teaching demonstration device based on single-chip microcomputer measurement. Background technique [0002] Mechanics is the foundation of physics, but in the process of teaching and learning, most of the situations are simplified to rigid bodies and mass points. But when students analyze practical problems in life, it is difficult to use the formulas they have learned. The most typical example is the load-bearing problem of bridges that is common in engineering design competitions. It is difficult for instructors and students to analyze the stress distribution of the model through calculations and derivation formulas, let alone find the optimal solution. [0003] Birefringence: A beam of incident light waves is decomposed into two beams of light waves with perpendicular polarization directions and different refraction angles in a birefringent material. This p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B23/22G01L1/24
Inventor 陈岭
Owner 上海市行知实验中学
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