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Proceedings Paper

Optical measurement method of necking process in the material tensile test
Author(s): Lizhong Zhang; Xueping Song; Guohua Cao; Zhenglin Yu
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Paper Abstract

This paper puts forward a new method of optical real-time measurement in the necking process of material tensile test, including the change of the necking position and the necking value with the gradually applied load. Two dimension measurement is completed by the scanning of polygon mirror at the emitting end and the adoption of linear array TDI CCD components. The interference of stray light is restrained effectively because we use semiconductor laser as light source and optical filter at the receiving end. Furthermore, this paper deals with the correction method of non-uniform speed scanning beam at the receiving area, the factors effecting the ultimate measurement accuracy and the countermeasures.

Paper Details

Date Published: 10 August 1998
PDF: 3 pages
Proc. SPIE 3558, Automated Optical Inspection for Industry: Theory, Technology, and Applications II, (10 August 1998); doi: 10.1117/12.318451
Show Author Affiliations
Lizhong Zhang, Changchun Institute of Optics and Fine Mechanics (China)
Xueping Song, Changchun Institute of Optics and Fine Mechanics (China)
Guohua Cao, Changchun Institute of Optics and Fine Mechanics (China)
Zhenglin Yu, Changchun Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 3558:
Automated Optical Inspection for Industry: Theory, Technology, and Applications II
Shenghua Ye, Editor(s)

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