Table of Contents
Journal of Polymers
Volume 2016, Article ID 4684796, 11 pages
http://dx.doi.org/10.1155/2016/4684796
Research Article

Iterative Deconvolution of PEA Measurements for Enhancing the Spatial Resolution of Charge Profile in Space Polymers

1Department of Electrical and Electronics Engineering, Lebanese International University, Mazraa, 146404 Beirut, Lebanon
2LAPLACE, University of Toulouse, UPS, INPT 118 route de Narbonne, 31062 Toulouse Cedex 9, France
3CNES, 18 avenue Edouard Belin, 31401 Toulouse Cedex 9, France

Received 11 March 2016; Accepted 6 June 2016

Academic Editor: Alan K. T. Lau

Copyright © 2016 Mohamad Arnaout et al. 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.

Abstract

This work aims to improve the PEA calibration technique through defining a well-conditioned transfer matrix. To this end, a numerical electroacoustic model that allows determining the output voltage of the piezoelectric sensor and the acoustic pressure is developed with the software COMSOL®. The proposed method recovers the charge distribution within the sample using an iterative deconvolution method that uses the transfer matrix obtained with the new calibration technique. The obtained results on theoretical and experimental signals show an improvement in the spatial resolution compared with the standard method usually used.