✦ LIBER ✦

CONTROL OF SOUND TRANSMISSION THROUGH THIN PLATE

✍ Scribed by C.-C. Sung; C.-Y. Chiu

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 238 KB
Volume: 218
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1998.1855

No coin nor oath required. For personal study only.

✦ Synopsis

Active suppression of the acoustic transmission through plate structure is the major target of this paper. The model consists of a plane acoustic wave incident onto a clamped elastic rectangular thin plate and the piezoceramic patches modelled as four point moments are bonded on the surface of the plate as controllers. Control methods are model based, and rely on state or output feedback to change dynamic characteristic of the plate. The transmitted sound power before and after control is compared using different numbers of controllers. The results show that both the plate responses and the transmission of sound power obtained theoretically and experimentally match. After control the transmitted acoustic power is reduced by about 30-40 dB by one or two piezoelectric ceramics and the global sound pressure level is reduced by about 20-30 dB for low to mid-range frequencies.

📜 SIMILAR VOLUMES

Sound transmission through a perforated

Sound transmission through a perforated plate of finite thickness

✍ M.G. Sirotyuk 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 85 KB

Transmission of reverberant sound throug

Transmission of reverberant sound through orthotropic, viscoelastic multilayered plates

✍ J.L. Guyader; C. Lesueur 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 790 KB

Experiments on the active control of the

Experiments on the active control of the transmission of sound through a clamped rectangular plate

✍ D.R. Thomas; P.A. Nelson; S.J. Elliott 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 328 KB

VOLUME VELOCITY CONTROL OF SOUND TRANSMI

VOLUME VELOCITY CONTROL OF SOUND TRANSMISSION THROUGH COMPOSITE PANELS

✍ R.L. St. Pierre; Jr; G.H. Koopmann; W. Chen 📂 Article 📅 1998 🏛 Elsevier Science 🌐 English ⚖ 508 KB

A design method for minimizing the sound transmitted through an array of panels is presented. This method is based on minimizing the volume velocity of individual segments of the array using integrated control loudspeakers. In this manner, each of the control segments can be treated and controlled s

Active control of sound transmission thr

Active control of sound transmission through a double panel partition

✍ P. Sas; C. Bao; F. Augusztinovicz; W. Desmet 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 994 KB

The feasibility of improving the insertion loss of lightweight double panel partitions by using small loudspeakers as active noise control sources inside the air gap between both panels of the partition is investigated analytically, numerically and experimentally in this paper. A theoretical analysi

STRUCTURE-BORNE SOUND TRANSMISSION BETWE

STRUCTURE-BORNE SOUND TRANSMISSION BETWEEN THIN ORTHOTROPIC PLATES: ANALYTICAL SOLUTIONS

✍ I. Bosmans; P. Mees; G. Vermeir 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 488 KB

Two models are presented for predicting structure-borne sound transmission between thin orthotropic plates connected by a rigid junction. The first is based on a solution for the wave propagation in semi-infinite plates, and the second is based on a modal summation solution for finite-sized plates.