Structural health monitoring by extraction of coherent guided waves from diffuse fields.

Structural health monitoring by extraction of coherent guided waves from diffuse fields. Research Abstract Details 

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Structural health monitoring by extraction of coherent guided waves from diffuse fields. Abstract Text:

Karim G Sabra,Ankit Srivastava,Francesco Lanza di Scalea,Ivan Bartoli,Piervincenzo Rizzo,Stephane Conti,Karim G Sabra,Ankit Srivastava,Francesco Lanza di Scalea,Ivan Bartoli,Piervincenzo Rizzo,Stephane Conti,Karim G Sabra,Ankit Srivastava,Francesco Lanza di Scalea,Ivan Bartoli,Piervincenzo Rizzo,Stephane Conti,

Recent theoretical and experimental studies in a wide range of applications have demonstrated that Green's functions (impulse responses) can be extracted from cross-correlation of diffuse fields using only passive sensors. This letter demonstrates the passive-only reconstruction of coherent Lamb waves (dc-500 kHz) in an aluminum plate of thickness comparable to aircraft fuselage and wing panels. It is further shown that the passively reconstructed waves are sensitive to the presence of damage in the plate as it would be expected in a typical "active" guided wave test. This proof-of-principle study suggests the potential for a structural health monitoring method for aircraft panels based on passive ultrasound imaging reconstructed from diffuse fields.

Structural health monitoring by extraction of coherent guided waves from diffuse fields. Publishing Authors By Initials

KG Sabra,A Srivastava,F Lanza di Scalea,I Bartoli,P Rizzo,S Conti,KG Sabra,A Srivastava,F Lanza di Scalea,I Bartoli,P Rizzo,S Conti,KG Sabra,A Srivastava,F Lanza di Scalea,I Bartoli,P Rizzo,S Conti,

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Structural health monitoring by extraction of coherent guided waves from diffuse fields. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: The Journal of the Acoustical Society of America

VOLUME: 123

Page Numbers: EL8

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 1520-8524

DAY: 7

MONTH: Jan

YEAR: 2008

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LANGUAGE: eng

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Grant and Affiliation Information for Structural health monitoring by extraction of coherent guided waves from diffuse fields.

AFFILIATION: School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, USAkarim.sabra@me.gatech.edu.

Country: United States

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MEDLINETA: J Acoust Soc Am

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