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Interférométrie numérique ultrasonore pour la détermination de la matrice de raideur des matériaux composites

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Ultrasonic interferometry based on a numerical method for the measurement of elastic constants in anisotropic materials (wood, CFR, fiber glass, etc…) has lead to an apparatus, which is described below.

The device and the metrology proceedings as well have been conceived in order to achieve a complete automatization.

The great number of experimental data allows us to use an optimization method for more reliable results.

Sommaire

On présente un banc ultrasonore utilisant une méthode d'interférométrie numérique, en vue de la détermination des coefficients élastiques de matériaux anisotropes: bois, matériaux composites, etc….

L'ensemble de l'appareillage ainsi que les procédures d'acquisition des mesures ont été conçus en vue d'une automatisation complète du banc. Le nombre des mesures devient ainsi très important et les résultats sont plus fiables grâce à l'emploi d'une méthode d'optimisation.

Zusammenfassung

Es wird eine Ultraschallanordnung vorgestellt, bei der eine Methode der numerischen Interferometrie benutzt wird und die der Bestimmung der elastischen Konstanten von anisotropen Materialien wie Holz, zusammengesetzten Stoffen usw. dient.

Sowohl der Aufbau der Apparatur als auch die Art der Meßdatengewinnung wurden im Hinblick auf eine vollständige Automatisierung konzipiert. Dadurch kann die Zahl der Messungen sehr groß gemacht werden, was bei Anwendung eines Optimierungsverfahrens zu sehr zuverlässigen Ergebnissen führt.
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Document Type: Research Article

Publication date: August 1, 1983

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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