Vibrational Insertion Loss of Traditional and Smart Joints
The vibrational insertion loss of selected traditional and smart joints are investigated experimentally with the test-rigs presented in reference [1, 2]. The influences of various factors such as spacing between fasteners, overlap, bonding materials are examined. The relation between system damping and the damping introduced by the joint is discussed. For smart joints, comparison is also made with the transmission loss of elastic interlayer in order to understand the mechanism. At low frequencies the main positive effect of a joint is damping. When the frequency is higher, the joint start to separate the system and other factors such as stiffness and weight become more important. Maximum damping does not coincide with the maximum vibrational insertion loss. In order to achieve best vibro-acoustic performance and structure integrity, it is better to use different joint techniques in different frequency bands, since the insertion loss is frequency dependent.
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Document Type: Research Article
Publication date: March 1, 2001
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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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