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Proceedings Paper

All-optic-fiber phase-shifting ESPI inspection system
Author(s): Hua Fan; Yuanhe Song; Yushan Tan
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Paper Abstract

The all optic fiber phase-shifting electronic speckle pattern interferometry (ESPI) is studied in this paper, which has the following advantages: (1) low cost; (2) reduction of the unreliable factors generated by separated optic components; (3) simplification of the optic configuration; (4) great reduction of volume; (5) flexibility, to be easily designed into different structures to adapt to inaccessible environments such as pipeline cavity and so on. All optic fiber ESPI inspection systems, sensitive to in-plane and off- plane displacement, are presented and practical measurement has been carried out in defect testing of carbon fiber material and crack testing. The results are satisfactory.

Paper Details

Date Published: 10 December 1997
PDF: 6 pages
Proc. SPIE 3204, Three-Dimensional Imaging and Laser-based Systems for Metrology and Inspection III, (10 December 1997); doi: 10.1117/12.294465
Show Author Affiliations
Hua Fan, Xi'an Jiaotong Univ. (China)
Yuanhe Song, Xi'an Jiaotong Univ. (China)
Yushan Tan, Xi'an Jiaotong Univ. (China)


Published in SPIE Proceedings Vol. 3204:
Three-Dimensional Imaging and Laser-based Systems for Metrology and Inspection III
Kevin G. Harding; Donald J. Svetkoff, Editor(s)

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