explain how can you use the extensometer available in our laboratory for square bars
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The extensometer is a device invented by Charles Huston, used to measure changes in the length of an object. It is useful to measure the extension in the tensile test mainly in the linear part of the load -extension (stress-stain) curve. The extensometer is removed after getting enough data to calculate the young’s modulus.
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Although there are such types of equipment in a laboratory, you should be able to know and practice the way to use the extensometer.
It is an equipment used to measure the change in length.
Several steps and procedures should be followed when using the extensometer.
Before using it, you have to use the user guides or get advice from experienced users.
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