Measuring device and measuring method for mechanical parameters

Abstract

The invention provides a measuring device for mechanical parameters. The measuring device comprises a clamp, a coil, a magnet, a light source, an optical filter, a first polaroid, a second polaroid, a tripod, an optical power meter or a spectrograph, a probe of the optical power meter or the spectrograph, a direct-current power supply and a resistor. The clamp is used for fixing the two ends of a to-be-tested material, and the coil is suspended at the midpoint of the horizontally-placed to-be-tested material or suspended at the lower end of the vertically-placed to-be-tested material and is arranged at a uniform magnetic field between the two poles of the magnet; the light source, the optical filter, the first polaroid, the second polaroid and the optical power meter or the spectrograph probe are consistent in height, and light rays emitted by the light source vertically pass through the optical filter, the first polaroid, the second polaroid and the optical power meter or the spectrograph probe in sequence; the second polaroid is fixed on the three-legged support, one tip of the three-legged support is arranged on the clamp, the other two tips of the three-legged support are fixedly arranged on a horizontal plate, and the two ends of the coil wire are connected with the resistor and the direct-current power supply to form a closed loop. The device is simple to operate and accurate in result, and has the advantages of being controllable, easy to adjust, stable, continuous, high in anti-interference performance and the like.

Description

technical field [0001] The invention relates to the field of mechanical parameter measurement, in particular to a measuring device and method for mechanical parameters. Background technique [0002] Deformation is widely used in mechanical measurement, energy conversion, flexible devices and so on. Wearable devices provide new ideas for industries such as medical care, electronics, and analysis and testing. my country's aerospace industry has made a major breakthrough. The flexible solar cell wing was first applied to my country's space station. The panels used a large area of ​​flexible materials that can be retracted, which greatly reduced the mass and improved the carrying capacity of the space station. The determination of deformation-related mechanical parameters is the key to the selection and design of flexible materials, which has important scientific significance and application value. [0003] Young's modulus, modulus of elasticity, and Poisson's ratio are import...

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Problems solved by technology

For example, the optical lever mirror ruler method commonly used in teaching courses not only takes up a large space, but also is difficult to adjust and complicated to operate. At the same time, the operation of manually hanging heavy objects will also have a certain impact on the stability of the device, which will inevitably affect the experimental results. Eliminated errors

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