Using Noise Control Technologies and Systems in Construction and Seismology

Developing of Environmental Noise Control

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.249-250.1264 ◽

2012 ◽

Vol 249-250 ◽

pp. 1264-1267 ◽

Cited By ~ 1

Author(s):

Hai Ying Zhang ◽

Guo Xian Ma

Keyword(s):

Teaching Methods ◽

Noise Control ◽

Environmental Noise ◽

Environmental Engineering ◽

Basic Knowledge ◽

Course Content ◽

Control Technologies ◽

And Control

Environmental noise control is a compulsory special course for students of Environmental Engineering. Through leaning this course, the students should know basic knowledge of noise, noise control technologies and how to test and control environmental noise. With increasing importance attached on environment, requirement of noise control is more stringent than ever before. In order to maintain the competitiveness of undergraduates, it is necessary to give the course in bilingual language, especially those who study in Environmental Engineering. This paper first analyzes the characteristics and probes the problems of this course. Then it proposes a developing plan for the course from the following aspects: necessity of learning this course, course aims, course content, related courses and teaching methods.

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Challenges in the implementation of active noise control technologies

The Journal of the Acoustical Society of America ◽

10.1121/1.4708885 ◽

2012 ◽

Vol 131 (4) ◽

pp. 3435-3435

Author(s):

Xiaojun Qiu ◽

Ningrong Li

Keyword(s):

Noise Control ◽

Active Noise Control ◽

Active Noise ◽

Control Technologies

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Synergism of flow and noise control technologies

Progress in Aerospace Sciences ◽

10.1016/j.paerosci.2005.07.002 ◽

2005 ◽

Vol 41 (5) ◽

pp. 363-417 ◽

Cited By ~ 17

Author(s):

Ronald D. Joslin ◽

Russell H. Thomas ◽

Meelan M. Choudhari

Keyword(s):

Noise Control ◽

Control Technologies

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DEVELOPMENT OF SMART STRUCTURE SYSTEMS FOR HELICOPTER VIBRATION AND NOISE CONTROL

Transactions of the Canadian Society for Mechanical Engineering ◽

10.1139/tcsme-2007-0003 ◽

2007 ◽

Vol 31 (1) ◽

pp. 39-56 ◽

Cited By ~ 4

Author(s):

Y. Chen ◽

V. Wickramasinghe ◽

D. G. Zimcik

Keyword(s):

Noise Control ◽

National Research Council ◽

Smart Structure ◽

Ride Quality ◽

Vibration Load ◽

Cabin Noise ◽

Acoustic Control ◽

Control Technologies ◽

Helicopter Vibration

Helicopters are susceptible to high vibratory loads, excessive noise levels and poor flight stability compared to fixed-wing aircraft. The multidisciplinary nature of helicopter structures offers many opportunities for the innovative smart structure technology to improve helicopter performance. This paper provides a review of smart structures research at the National Research Council Canada for helicopter vibration and cabin noise control applications. The patented Smart Spring approach is developed to vary the blade impedance properties adaptively to reduce the vibratory hub loads transmitted to the fuselage by vibration reduction at the source. A smart gearbox strut and active structural acoustic control technologies are investigated to suppress the vibration and tonal gear meshing noise into the cabin either by modifying the vibration load transmission path, or weakening the coupling between exterior and cabin acoustic fields. Two adaptive seat mount concepts are proposed to reduce the vibration of the aircrew directly to improve ride quality of the vehicle.

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A Critical Review of Passive Noise Control Techniques in Industrial Fans

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.4025837 ◽

2013 ◽

Vol 136 (4) ◽

Cited By ~ 3

Author(s):

Stefano Bianchi ◽

Alessandro Corsini ◽

A.G. Sheard

Keyword(s):

High Speed ◽

Noise Control ◽

Theoretical Research ◽

Future Research ◽

Fan Noise ◽

Acoustic Effect ◽

Control Techniques ◽

Current State ◽

Control Technologies ◽

Passive Noise

This review aims to assist engineers in understanding and applying passive solutions for reducing industrial fan noise. The paper systematically reviews the extant literature on passive noise techniques, with a particular focus on experimental rather than theoretical research. The review provides an assessment of the current state of the art in industrial fan flow and noise control. It offers a vision for potential improvements in noise reduction via novel application of flow and noise control technologies. The review examines the interaction between aerodynamic cause and acoustic effect and the application of control technologies that current cause and effect theories have inspired. The purpose is to provide a vision for aerodynamics research during the next decade that will serve as a basis for systematically reducing industrial fan noise emissions. The review provides an assessment of recent flow and noise control advances and considers some opportunities for future research. The review reflects an emphasis on low-speed industrial fans. The authors consider high-speed turbomachinery noise control, with the objective of illustrating the linkages between the two technologies. The review concludes with a summary of the opportunities for future research and its application to flow and noise control in industrial fan design.

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