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Interaction of the A0 Lamb Wave Mode With a De-Lamination Type Defect in GLARE3-3/2 Composite Material

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Ultrasonic non-destructive testing and evaluation is one of the most common methods applied for inspection of composite materials. The measured wave velocity gives information about composite properties. Changes in the ultrasonic wave velocity or in the amplitude of the ultrasonic signal indicate possible defects. The application of a single-side access air-coupled ultrasonic technique for the investigation of the Lamb wave propagation in the composite material, and numerical simulations of the Lamb wave interaction with the de-lamination type defect, are presented here. The interaction between wave and damage is analysed in detail. The change of the Lamb wave velocity was measured in a de-laminated area of the composite material GLARE3-3/2. The influence of the de-lamination on the Lamb wave propagation velocity is investigated experimentally and numerically.
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Document Type: Research Article

Publication date: 2006-07-01

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  • 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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