Single slit diffraction yang modulus measuring apparatus

Abstract

The invention relates to a single slit diffraction Young modulus measuring apparatus, which mainly comprises an upper beam, upright posts, a pedestal, a thread to be measured, a single slit upper blade, a single slit lower blade, a laser and a diffraction screen. The invention is characterized in that: two upright posts are fixed through the upper beam and the pedestal; the thread to be measured is fixed on the upper beam through a fastening screw of the thread to be measured; a single slit platform is fixed on the middle parts of the upright posts; the single slit upper blade and the laser are fixed under the single slit platform; the single slit lower blade is locked on the thread to be measured through a locking screw; light beams of the semiconductor laser just face to a gap (known as a single slit) between the single slit upper blade and the single slit lower blade; and the diffraction screen is placed on a laser light path which is 1 meter away from the single slit. After the laser beams pass through the single slit, diffraction spots of the laser beams are displayed on the diffraction screen; the variation of the width of the single slit can be calculated by measuring the variation of the width of the diffraction spots according to the physical principle of single slit diffraction, and then the Young modulus of the thread to be measured is measured precisely.

Description

Single Slit Diffraction Young's Modulus Meter Technical field The invention relates to the field of single-slit diffraction of physical optics and measurement of Young's modulus of materials (Young's modulus of elasticity, referred to as Young's modulus, is a special term for material strength performance) Background technique: The Young's modulus of solid materials is a very important physical and mechanical property. How to accurately measure the Young's modulus is of great significance for engineering design and mechanical manufacturing. The methods for measuring the Young's modulus of solid materials include stretching method, bending method, vibration method, internal friction method, etc. In the physical experiments of colleges and universities, the tensile method is often used to measure the Young's modulus of solid materials. The advantage of measuring Young’s modulus by tensile method is that it is intuitive. The measured length, force-bearing area and force-bear...

AI Technical Summary

Problems solved by technology

In order to improve the measurement accuracy and overcome the shortcomings of the flat mirror that is easy to break, the invention provides a single-slit diffraction Young's modulus measuring instrument, which can well overcome these shortcomings

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