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language
eng
Author
Yokota, Masayuki Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan
Koyama, Teppei Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan
Takeda, Kazufumi Faculty of Science and Engineering, Shimane University, 1060 Nishikawatsu-cho, Matsue, Shimane 690-8504, Japan
Description
A multicolor digital holographic inspection system achieving both automatic scanning sensing head and automatic correction of a distortion in the profile due to positional error of a sensing head has been applied to the inner surface of a straight brass pipe having artificial defects on its wall. To investigate the inner surface of the pipe, the sensing head consisting of a cone-shaped mirror (CSM) glued to an aluminum base in the pipe is illuminated by the collimated RGB laser beams from the outside of the pipe. In the system, by changing the wavelength of the illumination light and scanning the CSM in the pipe, data acquisitions and analysis are performed using a personal computer. It is shown that the pipe inspection, including a classification of defects, can be successfully conducted by comparing the multicolor intensity images and the height profile of inner surface of pipe.
Subject
Digital holographic system
Holographic interferometry
Multiwavelength
Pipe inspection
Journal Title
Optics and Lasers in Engineering
Volume
97
Start Page
62
End Page
70
ISSN
0143-8166
Published Date
2017-10
DOI
Publisher
Elsevier Ltd
NII Type
Journal Article
Format
PDF
Text Version
著者版
Gyoseki ID
e33903
OAI-PMH Set
Faculty of Science and Engineering
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