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Akustische Holographie – Untersuchungen zur lateralen Bildunschärfe

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Abstract:

The paper presents investigations concerning the application of acoustical holography to materials testing. On the one hand are shown the results of a systematic examination of the available lateral resolution and on the other hand a zone of an allowable blurring is defined, which yields the possibility to carry out an examination of a volume using acoustical holography.

Zusammenfassung

Die vorliegende Arbeit beschäftigt sich mit der akustischen Holographie als Abbildungsverfahren in der Materialprüfung. Es erfolgt zum einen eine systematische Untersuchung der erzielbaren Auflösung und zum anderen wird eine Zone mit zulässiger Tiefenunschärfe definiert. Dadurch ergibt sich die Möglichkeit, auch mit der akustischen Holographie eine Volumenprüfung durchzuführen.

Sommaire

On étudie l'holographie acoustique comme moyen d'accès à des images permettant le contrôle non destructif des matériaux. On a procédé à un examen systématique de la résolution latérale permise par cette méthode. De plus, en définissant une zone de flou acceptable, on étend les possibilités de l'holographie acoustique jusqu'à l'examen des matériaux en volume.

Document Type: Research Article

Publication date: November 1, 1988

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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