Reconstructing outside pass-band data to improve time resolution in ultrasonic detection

J Guo, Y Xin - NDT & E International, 2012 - Elsevier
A combination deconvolution method is presented to increase the time resolution of an
ultrasonic echo signal by reconstructing outside pass-band data. By the modified traditional …

Numerical and Experimental Evaluation of the Critically Refracted Longitudinal Waves (LCR) Beam Profile Generated by a Transducer

W Djerir, T Boutkedjirt, M Ourak, R Halimi… - Russian Journal of …, 2023 - Springer
Due to its advantageous properties, the critically refracted longitudinal waves (LCR) are
used in various fields of nondestructive evaluation, especially for residual stress …

Characterization of an ultrasound reception chain based of a PVDF membrane hydrophone

W Djerir, R Halimi, A Allag… - … Conference on Advances …, 2023 - ieeexplore.ieee.org
Ultrasound is commonly used in different applications such as the defects detection in
materials, underwater detection, medical and biological applications. In all this applications …

Defects Localization by a Temporal Maximum A Posteriori Deconvolution Method of Ultrasonic Signals

W Djerir, A Allag, T Boutkedjirt - 2019 International Conference …, 2019 - ieeexplore.ieee.org
In this work, the Maximum A Posteriori (MAP) method, is used for defect detection in
aluminium by determining the reflectivity sequence of the ultrasonic signal. In numerical …