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Proceedings Paper

Noise and vibration reduction technology in aircraft internal cabin
Author(s): Kosaku Takahashi; Hirotaka Monzen; Toshihiro Yamaoka; Koji Kusumoto; Kazuhiro Bansaku; Junichi Kimoto; Akira Isoe; Yasuo Hirose; Tomio Sanda; Yuji Matsuzaki
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Paper Abstract

The study to reduce noise and vibration in aircraft cabin through PZT was implemented, using a semi-monocoque structure, 1.5m in diameter and 3.0m long with 2.3mm skin, which stimulates an aircraft body. We utilized PZT of 480 pieces bonded on inner surface of the structure as sensor and actuator. We applied random noise of low frequency range between 0~500Hz to the test model. We tried to reduce the vibration level of structure and internal air due to the external load by controlling the PZTs. Two control methods, gain control and feed-forward control, were tried. We measured internal sound pressure on 150 spots and compared overall values of sound pressure with gain control to them without control and evaluated its reduction capability. The tests showed 4.0dB O.A. reduction at maximum in gain control and 3.5dB O.A. reduction at maximum in feed forward control.

Paper Details

Date Published: 14 August 2003
PDF: 9 pages
Proc. SPIE 5054, Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies, (14 August 2003); doi: 10.1117/12.483883
Show Author Affiliations
Kosaku Takahashi, Kawasaki Heavy Industries, Ltd. (Japan)
Hirotaka Monzen, Kawasaki Heavy Industries, Ltd. (Japan)
Toshihiro Yamaoka, Kawasaki Heavy Industries, Ltd. (Japan)
Koji Kusumoto, Kawasaki Heavy Industries, Ltd. (Japan)
Kazuhiro Bansaku, Kawasaki Heavy Industries, Ltd. (Japan)
Junichi Kimoto, Kawasaki Heavy Industries, Ltd. (Japan)
Akira Isoe, Kawasaki Heavy Industries, Ltd. (Japan)
Yasuo Hirose, Kawasaki Heavy Industries, Ltd. (Japan)
Tomio Sanda, Kawasaki Heavy Industries, Ltd. (Japan)
Yuji Matsuzaki, Univ. of Nagoya (Japan)

Published in SPIE Proceedings Vol. 5054:
Smart Structures and Materials 2003: Industrial and Commercial Applications of Smart Structures Technologies
Eric H. Anderson, Editor(s)

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