Low-frequency duct noise reduction using stiff light composite panels is developed and tested. Since these composite panels are made of lightweight and stiff materials, this actuation strategy will enable the creation of composite panels for duct noise control without using traditional heavy structural mass. The results suggest that the mass-spring resonance absorption in the case of a comparatively stiff thick panel with a thin flexible plate is more efficient with minimum weight, verifying that when subjected to low-frequency (<500 Hz). The efficiency of the panel absorber depends on the mass of the thin flexible plate and the stiffness of the panel.
Stiff light composite panels for duct noise reduction
Applied Acoustics ; 64 , 5 ; 511-524
2003
14 Seiten, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
Corrugated aluminium at the heart of stiff panels
Tema Archiv | 1990
Application of Micro-Perforated Panels to Attenuate Noise in a Duct
SAE Technical Papers | 2007
|Application of Micro-Perforated Panels to Attenuate Noise in a Duct
British Library Conference Proceedings | 2007
|PET composite folded plate type periodic structure noise reduction air duct
Europäisches Patentamt | 2023
|Application of micro-perforated panels to attenuate noise in a duct
Kraftfahrwesen | 2007
|