All-optic-fiber phase-shifting ESPI inspection system

Hua Fan; Yuanhe Song; Yushan Tan

doi:10.1117/12.294465

10 December 1997 All-optic-fiber phase-shifting ESPI inspection system

Hua Fan, Yuanhe Song, Yushan Tan

Proceedings Volume 3204, Three-Dimensional Imaging and Laser-based Systems for Metrology and Inspection III; (1997) https://doi.org/10.1117/12.294465
Event: Intelligent Systems and Advanced Manufacturing, 1997, Pittsburgh, PA, United States

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.

Citation Download Citation

Hua Fan, Yuanhe Song, and Yushan Tan "All-optic-fiber phase-shifting ESPI inspection system", Proc. SPIE 3204, Three-Dimensional Imaging and Laser-based Systems for Metrology and Inspection III, (10 December 1997); https://doi.org/10.1117/12.294465

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