Original title: Nondestructive evaluation of corrosion damage of Al-alloys by in-situ AE monitoring and nonlinear elastic wave spectroscopy testing
Authors: Kober, Jan ; Převorovský, Zdeněk
Document type: Papers
Conference/Event: NDT in PROGRESS /6./, Praha (CZ), 2011-10-10 / 2011-10-12
Year: 2011
Language: eng
Abstract: This work investigates the possibilities of monitoring ongoing corrosion process by acoustic emission (AE) and of determining overall corrosion damage by the nonlinear wave modulation spectroscopy method (NWMS). Specimens made of Al-alloy L-beams simulating stringer reinforcements of airplane structure were studied. The samples were repeatedly immersed in sea salt solution. The acoustic emission activity was recorded in situ during corrosion process. Nonlinear parameters of the samples were measured in between corrosion tests by NWMS method. The current dynamics of a corrosion process was determined by AE, the amount of corrosion damage was corresponding to the nonlinear parameters obtained by NWMS.
Keywords: acoustic emission (AE); aluminium alloys; exfoliation corrosion; nonlinear elastic wave spectroscopy (NEWS); nonlinear wave modulation spectroscopy (NWMS)
Project no.: CEZ:AV0Z20760514 (CEP), FR-TI1/274 (CEP), GAP104/10/1430 (CEP)
Funding provider: GA MPO, GA ČR
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/11104/0201658

Permalink: http://www.nusl.cz/ntk/nusl-80938


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Research > Institutes ASCR > Institute of Thermomechanics
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