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Coatings 2017, 7(12), 230; doi:10.3390/coatings7120230

Simulation of Acoustic Wave Propagation in Aluminium Coatings for Material Characterization

1
Materials Center Leoben Forschung GmbH (MCL), Leoben 8700, Austria
2
Institute of Physics, Karl-Franzens University of Graz (KFU), Graz 8010, Austria
3
PVA TePla Analytical Systems GmbH (PVA AS), 73463 Westhausen, Germany
4
Infineon Technologies Austria AG (IFAT), Villach 9500, Austria
*
Author to whom correspondence should be addressed.
Academic Editors: Timon Rabczuk, Michael Nolan and Alessandro Lavacchi
Received: 28 September 2017 / Revised: 23 October 2017 / Accepted: 4 December 2017 / Published: 14 December 2017
(This article belongs to the Special Issue Modelling and Simulation of Coating)
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Abstract

Aluminium coatings and their characterization are of great interest in many fields of application, ranging from aircraft industries to microelectronics. Here, we present the simulation of acoustic wave propagation in aluminium coatings via the elastodynamic finite integration technique (EFIT) in comparison to experimental results. The simulations of intensity (I)–defocus (z) curves, obtained by scanning acoustic microscopy (SAM), were first carried out on an aluminium bulk sample, and secondly on a 1 µm aluminium coating deposited on a silicon substrate. The I(z) curves were used to determine the Rayleigh wave velocity of the aluminium bulk sample and the aluminium coating. The results of the simulations with respect to the Rayleigh velocity were corroborated by non-destructive SAM measurements and laser ultrasonic measurements (LUS). View Full-Text
Keywords: aluminium coatings; acoustic simulation; scanning acoustic microscopy; V(z); acoustic material signature; Rayleigh wave velocity, integrated computational material engineering aluminium coatings; acoustic simulation; scanning acoustic microscopy; V(z); acoustic material signature; Rayleigh wave velocity, integrated computational material engineering
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Grünwald, E.; Hammer, R.; Nuster, R.; Wieser, P.A.; Hinderer, M.; Wiesler, I.; Zelsacher, R.; Ehmann, M.; Brunner, R. Simulation of Acoustic Wave Propagation in Aluminium Coatings for Material Characterization. Coatings 2017, 7, 230.

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