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Ultrasonic Imaging Through Thin Reverberating Materials
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-6216-6132
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Signals and Systems.ORCID iD: 0000-0002-9992-7791
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2015 (English)In: Physics Procedia, ISSN 1875-3892, E-ISSN 1875-3892, Vol. 70, 380-383 p.Article in journal (Refereed) Published
Abstract [en]

Imaging through anisotropic or highly heterogeneous materials is challenging for the existence of strong boundary and volume reverberations. To image small cracks or flaws in a reverberating thin layers, high resolution techniques are needed in both temporal and spatial domain, so that the reverberation can be suppressed to some level. In this paper, the reverberation suppression performance of the total focusing beamforming method (TFM) was evaluated by simulation and real data processing. The results showed that the more the focusing point moves away from the array central line, the more multi-reflections can be suppressed. Furthermore, TFM combined with adaptive processing greatly improves the small flaw detection performance. Test results on real samples confirmed the robustness and reverberation suppression capability of the TFM imaging method.

Place, publisher, year, edition, pages
2015. Vol. 70, 380-383 p.
National Category
Signal Processing
Research subject
Signal Processing
Identifiers
URN: urn:nbn:se:ltu:diva-34149DOI: 10.1016/j.phpro.2015.08.099Local ID: 844671af-efc0-4434-b915-15d2f9f550aeOAI: oai:DiVA.org:ltu-34149DiVA: diva2:1007399
Conference
International Congress on Ultrasonics : 10/05/2015 - 15/05/2015
Note
Validerad; 2015; Nivå 1; Bibliografisk uppgift: Physics Procedia (2015) pp. 380-383; 20150216 (johanc); Konferensartikel i tidskriftAvailable from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-10-19Bibliographically approved

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CiteExportLink to record
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