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The Scientific World Journal
Volume 2013, Article ID 413587, 8 pages
http://dx.doi.org/10.1155/2013/413587
Research Article

Turbine Rotor Disk Health Monitoring Assessment Based on Sensor Technology and Spin Tests Data

NASA Glenn Research Center, Cleveland, OH 44135, USA

Received 15 April 2013; Accepted 14 May 2013

Academic Editors: P.-C. Chen and M. Curioni

Copyright © 2013 Ali Abdul-Aziz and Mark Woike. 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.

Abstract

The paper focuses on presenting data obtained from spin test experiments of a turbine engine like rotor disk and assessing their correlation to the development of a structural health monitoring and fault detection system. The data were obtained under various operating conditions such as the rotor disk being artificially induced with and without a notch and rotated at a rotational speed of up to 10,000 rpm under balanced and imbalanced state. The data collected included blade tip clearance, blade tip timing measurements, and shaft displacements. Two different sensor technologies were employed in the testing: microwave and capacitive sensors, respectively. The experimental tests were conducted at the NASA Glenn Research Center’s Rotordynamics Laboratory using a high precision spin system. Disk flaw observations and related assessments from the collected data for both sensors are reported and discussed.