Early detection of changes in dynamic properties of cyclically symmetric structures

Håvard Vold; Kevin Napolitano

doi:10.1117/12.715386

10 April 2007 Early detection of changes in dynamic properties of cyclically symmetric structures

Håvard Vold, Kevin Napolitano

Proceedings Volume 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007; 653017 (2007) https://doi.org/10.1117/12.715386
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

Bladed disks and turbine wheels in jet engines may after a certain period of service degrade into a condition called mistuning, whereby these cyclically symmetric structures lose their symmetric dynamic properties, leading to imbalance, loss of performance, and ultimately to failure. This paper describes a diagnostic procedure whereby such mistuning may be detected in its early stages, allowing for the scheduled maintenance and replacement of these critical parts.

Citation Download Citation

Håvard Vold and Kevin Napolitano "Early detection of changes in dynamic properties of cyclically symmetric structures", Proc. SPIE 6530, Sensor Systems and Networks: Phenomena, Technology, and Applications for NDE and Health Monitoring 2007, 653017 (10 April 2007); https://doi.org/10.1117/12.715386

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