Inner profile measurement of pipes and holes using a ring beam device

Toru Yoshizawa; Masayuki Yamamoto; Toshitaka Wakayama

doi:10.1117/12.689317

12 October 2006 Inner profile measurement of pipes and holes using a ring beam device

Toru Yoshizawa, Masayuki Yamamoto, Toshitaka Wakayama

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.

Citation Download Citation

Toru Yoshizawa, Masayuki Yamamoto, and 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); https://doi.org/10.1117/12.689317

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