Sparse signal representation and its applications in ultrasonic NDE

GM Zhang, CZ Zhang, DM Harvey - Ultrasonics, 2012 - Elsevier
Many sparse signal representation (SSR) algorithms have been developed in the past
decade. The advantages of SSR such as compact representations and super resolution lead …

Contemporary ultrasonic signal processing approaches for nondestructive evaluation of multilayered structures

GM Zhang, DM Harvey - Nondestructive testing and evaluation, 2012 - Taylor & Francis
Various signal processing techniques have been used for the enhancement of defect
detection and defect characterisation. Cross-correlation, filtering, autoregressive analysis …

Microelectronic package characterisation using scanning acoustic microscopy

GM Zhang, DM Harvey, DR Braden - NDT & E International, 2007 - Elsevier
In a highly competitive market, reliable techniques for manufacturing quality control of
electronic devices are demanded. Characterisation of modern microelectronic package …

Signal denoising and ultrasonic flaw detection via overcomplete and sparse representations

GM Zhang, DM Harvey, DR Braden - The Journal of the Acoustical …, 2008 - pubs.aip.org
Sparse signal representations from overcomplete dictionaries are the most recent technique
in the signal processing community. Applications of this technique extend into many fields. In …

[HTML][HTML] A multiresolution sparse signal representation approach for the decomposition of overlapping echoes in complex ultrasonic signals

H Wang, G Zhang, H Ma, X Zhang, Y Chen… - … Systems and Signal …, 2024 - Elsevier
Modern 3D microelectronic packages frequently exhibit a significant overlap of reflected
ultrasonic echoes, often exceeding 50% due to the diminishing thickness of internal …

Polymer acoustic matching layer for broadband ultrasonic applications

H Tohmyoh - The Journal of the Acoustical Society of America, 2006 - pubs.aip.org
A polymer acoustic matching layer has been designed that can act as a frequency filter
between water and a test sample, and a method for controlling the high-frequency …

Effect of sparse basis selection on ultrasonic signal representation

GM Zhang, DM Harvey, DR Braden - Ultrasonics, 2006 - Elsevier
Recently, adaptive sparse representations of ultrasonic signals have been utilized to
improve the performance of scanning acoustic microscopy (SAM), a common nondestructive …

[HTML][HTML] Acoustic time-frequency domain imaging

GM Zhang, DR Braden, DM Harvey… - The Journal of the …, 2010 - pubs.aip.org
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Adaptive sparse representations of ultrasonic signals for acoustic microimaging

GM Zhang, DM Harvey, DR Braden - The Journal of the Acoustical …, 2006 - pubs.aip.org
Acoustic microimaging (AMI) is a common nondestructive tool for failure analysis of
microelectronic packages. Accurate estimation of the reflected ultrasonic echoes is essential …

[HTML][HTML] Research on Sparse Representation Method of Acoustic Microimaging Signals

K Wang, T Leng, J Mao, G Lian, C Zhou - Applied Sciences, 2022 - mdpi.com
Acoustic microimaging (AMI), a technology for high-resolution imaging of materials using a
scanning acoustic microscope, has been widely used for non-destructive testing and …