Developments in signal processing and interpretation in laser tapping | Zendy

Mathieu Perton | Zendy; C. Néron | Zendy; Alain Blouin | Zendy; J.P. Monchalin | Zendy

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Developments in signal processing and interpretation in laser tapping

Author(s) -

Mathieu Perton,

C. Néron,

Alain Blouin,

J.P. Monchalin

Publication year - 2013

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4789066

Subject(s) - thermoelastic damping , tapping , laser , honeycomb , signal (programming language) , acoustics , interpretation (philosophy) , vibration , excitation , materials science , layer (electronics) , signal processing , optics , computer science , engineering , physics , thermal , composite material , electrical engineering , telecommunications , radar , meteorology , programming language

A novel technique, called laser-tapping, based on the thermoelastic excitation by laser like laser-ultrasonics has been previously introduced for inspecting honeycomb and foam core structures. If the top skin is delaminated or detached from the substrate, the detached layer is driven into vibration. The interpretation of the vibrations in terms of Lamb wave resonances is first discussed for a flat bottom hole configuration and then used to determine appropriate signal processing for samples such as honeycomb structures.Peer reviewed: YesNRC publication: Ye

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