12 October 2006 Inner profile measurement of pipes and holes using a ring beam device
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Proceedings Volume 6382, Two- and Three-Dimensional Methods for Inspection and Metrology IV; 63820D (2006) https://doi.org/10.1117/12.689317
Event: Optics East 2006, 2006, Boston, Massachusetts, United States
Abstract
Many trials have been proposed to measure inner diameter of pipes and/or holes. However most of them are classified into contact methods with any kind of stylus. Here we propose to measure inner diameter and profile of pipes using a ring beam device which consists of a conical mirror. and LD. The beam from the LD is directed to the top of the conical mirror which is precisely fabricated in angle and polished so as to form a ring beam for optical sections of the inner wall. This optically sectioned profile is analyzed to calculate the inner diameter and/or profile. In addition to pipes such as water mains and sewers, engine blocks for automobiles are tested to measure the inner size of cylinders and to find defects of inner surfaces.
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Toru Yoshizawa, Toru Yoshizawa, Masayuki Yamamoto, Masayuki Yamamoto, Toshitaka Wakayama, Toshitaka Wakayama, "Inner profile measurement of pipes and holes using a ring beam device", Proc. SPIE 6382, Two- and Three-Dimensional Methods for Inspection and Metrology IV, 63820D (12 October 2006); doi: 10.1117/12.689317; https://doi.org/10.1117/12.689317
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