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Acoustics
Special Issues
Opto/Photoacoustic for Imaging, Material Characterization and Nondestructive Evaluation
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Special Issue "Opto/Photoacoustic for Imaging, Material Characterization and Nondestructive Evaluation"

A special issue of Acoustics (ISSN 2624-599X).

Deadline for manuscript submissions: closed (31 August 2022) | Viewed by 1830

Special Issue Editor

Dr. Hossein Taheri

E-Mail Website
Guest Editor
Department of Manufacturing Engineering, Georgia Southern University, Statesboro, GA 30460, USA
Interests: ultrasound; acoustic, sound; material testing; acoustic emission; distributed acoustic sensing; noise; vibration; nonlinear; numerical; piezo
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Special Issue of Acoustics on “Opto/Photoacoustics for Imaging, Material Characterization and Nondestructive Evaluation” focuses on the broad topic of “Opto/Photoacoustics” and includes novel research on the use of Opto/Photoacoustic methods, instrumentation and techniques for imaging, material characterization and nondestructive testing and evaluation.

Theoretical and empirical articles on the application of novel Opto/Photoacoustic techniques in characterization, simulation, signal/data processing, application of artificial intelligence (AI), machine learning (ML) and calibration with applications to for imaging, material characterization and nondestructive testing and evaluation are welcome.

Contributions focusing on high-speed three-dimensional imaging, multispectral optoacoustic tomography (MSOT) and in situ process monitoring applications in today’s complex world, novel measurement techniques, and other types of in situ/ex situ monitoring and imaging are encouraged.

Dr. Hossein Taheri
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Acoustics is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • optoacoustic
  • photoacoustic
  • imaging
  • in situ Monitoring

Published Papers (1 paper)

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Research

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Article
Enhancement of Guided Wave Detection and Measurement in Buried Layers of Multilayered Structures Using a New Design of V(z) Acoustic Transducers
by
Michaël Lematre
and
Marc Lethiecq
Acoustics 2022, 4(4), 996-1012; https://doi.org/10.3390/acoustics4040061 - 15 Nov 2022
Viewed by 1175
Abstract
This paper presents the possibility of enhancement of the generation and detection of poorly energetic acoustic-guided waves in multilayered structures using a new design for a V(z) transducer. By defining a modified V(z) transducer composed of segmented piezoelectric elements, [...] Read more.
This paper presents the possibility of enhancement of the generation and detection of poorly energetic acoustic-guided waves in multilayered structures using a new design for a V(z) transducer. By defining a modified V(z) transducer composed of segmented piezoelectric elements, the acoustical energy can be directed towards specific angles in such a way as to generate guided waves that are poorly energetic. By comparing the results using this new design to those obtained with a classical V(z) transducer, it is shown that the generation and detection of such waves is greatly improved, especially for poorly energetic waves that belong to a buried layer in a multilayered structure. This is especially seen on the components of the spectra of V(z). The modeling of the modified V(z) signature for a multi-element focused transducer is widely detailed first. Then, in order to illustrate the advantages of our proposed method, a three-layer structure (aluminum/epoxy/steel) is discussed. The interest of this method for the characterization of elastic properties of “buried” layers through specific guided waves that are detected with great difficulty—or even not at all—with a classical V(z) transducer is demonstrated, especially for the A0 and S0 modes corresponding to the steel layer inside the three-layer structure. In this study, we also develop a specific tracking method for particular guided waves possessing large phase velocity variations over the considered frequency range, as is the case for the S0 mode of the steel sub-layer. Full article
(This article belongs to the Special Issue Opto/Photoacoustic for Imaging, Material Characterization and Nondestructive Evaluation)
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