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Applications of the Flexural Impulse Response Functions in the Time Domain

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This work addresses the response functions for infinite beams and plates with a force excitation at the origin of the coordinate system and its application to time reversal and time frequency analysis. The response function for Euler-Bernoulli beams is derived and for plates revisited. Interpretation concerning energy conservation and mobility are given. An possible alternative method to measure the coupling loss factors in SEA is sketched. The impulse response of a finite beam is measured in an experiment and compared with that predicted theoretically. The experimental data before the first reflection of the pulse showed good agreement with the theory. The response function is used to simulate a time reversed pulse. This numerical simulation is verified with an experiment.
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Document Type: Research Article

Publication date: 01 March 2008

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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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