Improving the method of testing tensile strength of material by 3D image

Yin-Liang Yuan; Yawei Wang; Bai-Qiang Xu

doi:10.1117/12.257263

31 October 1996 Improving the method of testing tensile strength of material by 3D image

Yin-Liang Yuan, Yawei Wang, Bai-Qiang Xu

Proceedings Volume 2908, Machine Vision Applications, Architectures, and Systems Integration V; (1996) https://doi.org/10.1117/12.257263
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

It is very important to evaluate mechanical parameters of material by testing in mechanical manufacture, especially the tensile strength of material. The results of the testing showed that its accuracy is relevant to many factors, such as the manufacture technology of testing samples, load growing in number with speed in the test processing etc. Then a key to get a high accuracy (sigma) _b in testing is to measure the traverse area of the sample precisely since the precision of the traverse area measurement affected seriously on the precision of measuring (sigma) _b. Conventionally, the area of the sample is commonly measured by measuring its diameter in two-direction in one plane with a sliding gage used. This measuring method not only causes a high system error in experimental testing, but also measure the area only in 2D. In fact, the tensile distribution of the sample is in 3D and related with the tensile strength (sigma) _b clearly in 3D. For this reason, the relationship between the traverse area of the sample and its tensile strength is studied theoretically and experimentally in 3D. In this paper, it is emphasized that the traverse area is in 3D and then a method of measuring the are of one is designed in experiment.

Citation Download Citation

Yin-Liang Yuan, Yawei Wang, and Bai-Qiang Xu "Improving the method of testing tensile strength of material by 3D image", Proc. SPIE 2908, Machine Vision Applications, Architectures, and Systems Integration V, (31 October 1996); https://doi.org/10.1117/12.257263

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