Nonlinear Structural Intensity: A damage detection application of structure-borne sound

Stephen C. Conlon, Fabio Semperlotti, Peter Q. Romano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Vibration based Structural Health Monitoring (SHM) technologies have been the focus of significant development efforts for applications to a broad spectrum of transportation and civil structural systems. The need for development of embedded "on-board" sensors and systems for health and condition assessment is driven by a desired shift from scheduled maintenance to Condition Based Maintenance (CBM) in order to lower operational system costs and to improve system reliability / safety. This work presents recent results from a study aimed at developing embedded vibration based airframe damage detection technologies to detect and classify critical fatigue induced damage. Previous work described the application of Structural Intensity (SI) based approaches to the SHM problem. SI was shown to be an attractive damage detection feature, being sensitive in both its magnitude and direction to damage initiation and progression. A new advanced damage assessment technique using a Nonlinear Structural Surface Intensity (NSSI) feature has been developed. Sensitivity benefits were demonstrated using the NSSI the approach for certain types of critical airframe damage, including cracks and loose joints. Key experimental results from the development of the NSSI technique are presented including discrete sensor measurements from damage progression development / validation experiments. Scanning laser vibrometer results, used to visualize structure energy flow mechanisms during damage progression, are also presented which lend insight to the key aspects of the damage detection technology developed.

Original languageEnglish (US)
Title of host publication40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Pages2906-2915
Number of pages10
StatePublished - Dec 1 2011
Event40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 - Osaka, Japan
Duration: Sep 4 2011Sep 7 2011

Publication series

Name40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Volume4

Other

Other40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
CountryJapan
CityOsaka
Period9/4/119/7/11

Fingerprint

damage
acoustics
progressions
airframes
structural health monitoring
maintenance
damage assessment
vibration
vibration meters
sensors
health
safety
cracks
costs
scanning
sensitivity
shift
lasers
energy

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

Cite this

Conlon, S. C., Semperlotti, F., & Romano, P. Q. (2011). Nonlinear Structural Intensity: A damage detection application of structure-borne sound. In 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 (pp. 2906-2915). (40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011; Vol. 4).
Conlon, Stephen C. ; Semperlotti, Fabio ; Romano, Peter Q. / Nonlinear Structural Intensity : A damage detection application of structure-borne sound. 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011. 2011. pp. 2906-2915 (40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011).
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Conlon, SC, Semperlotti, F & Romano, PQ 2011, Nonlinear Structural Intensity: A damage detection application of structure-borne sound. in 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011. 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011, vol. 4, pp. 2906-2915, 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011, Osaka, Japan, 9/4/11.

Nonlinear Structural Intensity : A damage detection application of structure-borne sound. / Conlon, Stephen C.; Semperlotti, Fabio; Romano, Peter Q.

40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011. 2011. p. 2906-2915 (40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011; Vol. 4).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Conlon SC, Semperlotti F, Romano PQ. Nonlinear Structural Intensity: A damage detection application of structure-borne sound. In 40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011. 2011. p. 2906-2915. (40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011).