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Proceedings Paper

Scanning ultrasonic spectroscopy for composite flywheels
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Paper Abstract

Composite flywheels are being considered as a replacement for chemical batteries aboard the International Space Station (ISS). Due to the serious consequences of a failure in a space environment, extensive testing of the flywheel systems must be conducted prior to flight certification. In addition to standard material testing and characterization, non destructive evaluation (NDE) of the rotors must be preformed to identify processing flaws and to understand the damage progression in a rotor under load. This paper describes the development of a scanning ultrasonic spectroscopy system for the non destructive evaluation of composite flywheels. Emphasis is placed on the novel resonance spectroscopy method that was investigated and its integration into a scanning system. Results of a scan of a composite ring standard and Plexiglas cylinder with known defects are presented and compared to ultrasonic pulse-echo c-scans.

Paper Details

Date Published: 3 August 2001
PDF: 7 pages
Proc. SPIE 4336, Nondestructive Evaluation of Materials and Composites V, (3 August 2001); doi: 10.1117/12.435573
Show Author Affiliations
Richard E. Martin, Cleveland State Univ. (United States)
George Y. Baaklini, NASA Glenn Research Ctr. (United States)

Published in SPIE Proceedings Vol. 4336:
Nondestructive Evaluation of Materials and Composites V
George Y. Baaklini; Eric S. Boltz; Steven M. Shepard; Peter J. Shull, Editor(s)

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