Experimental study on multinecking phenomenon of tensile metal specimen

Peng Zhou; Yang Zhao; Zhong Zhang; Boqin Xu; Xiaoping Wu

doi:10.1117/12.269801

20 March 1997 Experimental study on multinecking phenomenon of tensile metal specimen

Peng Zhou, Yang Zhao, Zhong Zhang, Boqin Xu, Xiaoping Wu

Proceedings Volume 2921, International Conference on Experimental Mechanics: Advances and Applications; (1997) https://doi.org/10.1117/12.269801
Event: International Conference on Experimental Mechanics: Advances and Applications, 1996, Singapore, Singapore

Abstract

The extra-low temperature has great influence on the mechanical properties of the material which is used widely in aerospace science and others. In our experiment of stretching the Extra-Low-Interstitial (ELI) Ti-5-Al-2.5Sn specimen, we found a new phenomenon of metal mechanics -- multi-necking. The contour of the specimen was also measured. We presented an experimental scheme of digital speckle pattern interferometry in room temperature to observe the in-plate deformation field of the whole process from the beginning of elastic deformation to the end of plastic deformation until fracture. Experimental results of the low temperature and normal temperature are much alike, expect for the difference of the multi-necking quantity. Based on the experiment results, a rough explanation was presented.

Citation Download Citation

Peng Zhou, Yang Zhao, Zhong Zhang, Boqin Xu, and Xiaoping Wu "Experimental study on multinecking phenomenon of tensile metal specimen", Proc. SPIE 2921, International Conference on Experimental Mechanics: Advances and Applications, (20 March 1997); https://doi.org/10.1117/12.269801

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