0
RESEARCH PAPERS

A Displacement Measurement Method by Laser-Beam Scanning for Mapping the Interior Geometry of Pipes

[+] Author and Article Information
M. Mizunuma, S. Ogawa, C. Nishimura, H. Kuwano

Nippon Telegraph and Telephone Corporation, Interdisciplinary Research Laboratories, 3-9-11 Midori-cho, Musashino-shi, Tokyo 180, Japan

J. Pressure Vessel Technol 116(2), 188-192 (May 01, 1994) (5 pages) doi:10.1115/1.2929574 History: Received December 03, 1992; Revised December 17, 1993; Online June 17, 2008

Abstract

This paper proposes a displacement measuring technique for detailed noncontact mapping of the interior geometry of pipes. The technique, which is based on optical measurement using triangulation, employs a laser-beam scanner to measure radial displacement. To achieve high precision, three different algorithms for calculating the displacement from sensor output are compared in experiments. One of them, which calculates the displacement by using several direction-dependent characteristic curves, gives high accuracy. The accuracy of our experimental system is ±0.2 mm for radii between 33 and 42 mm. A mapping system using this technique with automated data-acquisition and 3D rendering of the interior is also described. Its effectiveness is illustrated by the experimental results.

Copyright © 1994 by The American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In