Strain gage test

목차

1. Introduction
2. Theoretical background
3. Procedure of test
4. Result
5. Conclusion

본문내용

1. Introduction
All of the materials are deformed by external force, so materials can be used differently depending on a degree of deformation. At this time, Young’s modulus shows a value of how much materials are deformed by external force. Meanwhile Poisson’s ratio, found by strain gage, shows crystallographic anisotropy. Young’s modulus and Poisson’s ratio are constant below the proportional limit on stress-strain curve. Consequently, choosing materials properly, these two mechanical properties are considered in advance. Thus, the purpose of this test is to measure the Young’s modulus and Poisson’s ratio of Al 6061-O by using tensile grip of UTM.

2. Theoretical background
2.1 Engineering stress and strain
The result of tensile test is expressed as load and displacement. These load deformation characteristics depend on the specimen size. To minimize these geometrical factors, load and displacement are normalized to the parameters of engineering stress and engineering strain [1].

참고 자료

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