- #1
Lizwi
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This equation is for calculating what and how was it obtained.
E=6(mg/bt3)Rs
E=6(mg/bt3)Rs
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The Young's modulus, also known as the modulus of elasticity, is a measure of the stiffness of a material. It describes the relationship between stress (force per unit area) and strain (deformation) in a material under tension or compression.
The Young's modulus can be determined optically by using a technique called photoelasticity. This involves applying polarized light to a material and observing the patterns of light that form as the material is subjected to stress. The amount of stress can then be calculated using known principles of physics and the Young's modulus can be determined.
One of the main advantages of using optical methods is that they are non-destructive, meaning the material being tested is not damaged in the process. Additionally, optical methods can provide more accurate and precise measurements compared to traditional mechanical methods.
Most solid materials, including metals, plastics, and composites, can be tested using optical determination of Young's modulus. However, the material must be transparent or translucent enough for light to pass through and form a visible pattern.
One limitation of optical methods is that they are typically only applicable to materials that can withstand a certain amount of stress. Additionally, the accuracy of the results can be affected by factors such as surface roughness and the presence of impurities in the material.