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Sensors 2015, 15(6), 12782-12801;

A Rapid Method to Achieve Aero-Engine Blade Form Detection

State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an 710049, China
Author to whom correspondence should be addressed.
Academic Editors: Gary R. Pickrell and Daniel Homa
Received: 5 February 2015 / Accepted: 28 May 2015 / Published: 1 June 2015
(This article belongs to the Special Issue Optical Sensors for Chemical, Biological and Industrial Applications)
Full-Text   |   PDF [3392 KB, uploaded 1 June 2015]   |  


This paper proposes a rapid method to detect aero-engine blade form, according to the characteristics of an aero-engine blade surface. This method first deduces an inclination error model in free-form surface measurements based on the non-contact laser triangulation principle. Then a four-coordinate measuring system was independently developed, a special fixture was designed according to the blade shape features, and a fast measurement of the blade features path was planned. Finally, by using the inclination error model for correction of acquired data, the measurement error that was caused by tilt form is compensated. As a result the measurement accuracy of the Laser Displacement Sensor was less than 10 μm. After the experimental verification, this method makes full use of optical non-contact measurement fast speed, high precision and wide measuring range of features. Using a standard gauge block as a measurement reference, the coordinate system conversion data is simple and practical. It not only improves the measurement accuracy of the blade surface, but also its measurement efficiency. Therefore, this method increases the value of the measurement of complex surfaces. View Full-Text
Keywords: blade; laser displacement sensor; freeform surface; error compensation; four-coordinate measuring system blade; laser displacement sensor; freeform surface; error compensation; four-coordinate measuring system

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Sun, B.; Li, B. A Rapid Method to Achieve Aero-Engine Blade Form Detection. Sensors 2015, 15, 12782-12801.

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