Original title: Structural Health Monitoring in aerospace and civil engineering supported with two ultrasonic NDT methods - AE and NEWS
Authors: Převorovský, Zdeněk ; Krofta, Josef ; Farová, Zuzana ; Chlada, Milan
Document type: Papers
Conference/Event: NDT in PROGRESS /6./, Praha (CZ), 2011-10-10 / 2011-10-12
Year: 2011
Language: eng
Abstract: Structural Health Monitoring (SHM) becomes today an important technology improving reliability and safety of aeronautical and civil structures. Combining of two ultrasonic NDT methods - Acoustic Emission (AE) with Nonlinear Elastic Wave Spectroscopy (NEWS) - in SHM systems brings many advantages. AE enables real-time detection and localization of initiation and progression under operational stimulations, and NEWS methods provide retrieval of structural faults and complete information on AE sources. Examples of a complex SHM system design for critical parts of both aircraft and building roofs are discussed in this paper. The NEWS pseudo-tomography procedure, based on Time Reversal Mirrors (TRM) with Excitation Symmetry Analysis Method (ESAM), enabled zone-location of initiating defects, not detectable by other classical NDT procedures.Our results reflect good robustness of both techniques, and support their helpfulness in SHM of aircraft and building structures.
Keywords: acoustic emission; NDT; nonlinear elastic wave spectroscopy; structural health monitoring; time reversal mirrors
Project no.: CEZ:AV0Z20760514 (CEP), FR-TI1/274 (CEP), FR-TI1/198 (CEP)
Funding provider: GA MPO, GA MPO
Host item entry: NDT in Progress 2011, ISBN 978-80-214-4339-6

Institution: Institute of Thermomechanics AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0201690

Permalink: http://www.nusl.cz/ntk/nusl-81228


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