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Proceedings Paper

Recent advances in laser triangulation-based measurement of airfoil surfaces
Author(s): Omer L. Hageniers
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Paper Abstract

The measurement of aircraft jet engine turbine and compressor blades requires a high degree of accuracy. This paper will address the development and performance attributes of a noncontact electro-optical gaging system specifically designed to meet the airfoil dimensional measurement requirements inherent in turbine and compressor blade manufacture and repair. The system described consists of the following key components: a high accuracy, dual channel, laser based optical sensor, a four degree of freedom mechanical manipulator system and a computer based operator interface. Measurement modes of the system include point by point data gathering at rates up to 3 points per second and an 'on-the-fly' mode where points can be gathered at data rates up to 20 points per second at surface scanning speeds of up to 1 inch per second. Overall system accuracy is +/- 0.0005 inches in a configuration that is useable in the blade manufacturing area. The systems ability to input design data from CAD data bases and output measurement data in a CAD compatible data format is discussed.

Paper Details

Date Published: 4 January 1995
PDF: 21 pages
Proc. SPIE 2349, Industrial Optical Sensors for Metrology and Inspection, (4 January 1995); doi: 10.1117/12.198670
Show Author Affiliations
Omer L. Hageniers, Diffracto Ltd. (Canada)

Published in SPIE Proceedings Vol. 2349:
Industrial Optical Sensors for Metrology and Inspection
Kevin G. Harding; H. Philip Stahl, Editor(s)

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