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Noise control & acoustics division newsletter.

A small group of engineers met on March 16,1980, during the ASME Winter Annual Meeting, and agreed to form an organization that could promote developments in acoustics and noise control. At that point, they laid the foundation for the Noise Control and Acoustics Division (NCAD).

The vision of this small group was fulfilled less than two years later at Washington, D.C., when NCAD attained full division status in the ASME technical family on Nov. 19,1981. Since its inception, NCAD has grown from a few visionaries to over 500 primary members. NCAD is the 32nd technical division of ASME and is part of the Council of Engineering's Environment and Transportation Technical Group. Other divisions in the group include Aerospace, Rail Transportation, Environmental Engineering, and Materials and Energy Recovery.

The goal of NCAD is to establish a program within ASME that will encourage, focus, and further the development and application of noise control and acoustics principles to engineering. The division serves its members who represent various disciplines within ASME, acts as an outreach to other organizations, and encourages participation from those who have an interest in the field. NCAD accomplishes this by ensuring a balance between the theoretical studies of acoustics and its applications in terms of noise control engineering.

The primary vehicle used by NCAD to distribute information and encourage interaction among members, specialists, and interested parties is through participation in conferences. NCAD routinely participates in ASME's International Mechanical Engineering Congress and Exposition. In an effort to reach out to others interested in acoustics and noise control, NCAD periodically joins with other professional societies to sponsor a joint conference, generally every three or four years. Past participation has been primarily with the Institute of Noise Control Engineers, but NCAD is eager to team with additional organizations, particularly those within ASME.

The division sponsors several awards to recognize excellence in acoustics and noise control. Some of these awards are presented at the annual conference. Each year, a highly distinguished person is chosen to present the Rayleigh Lecture; this award is given to an individual who has made pioneering contributions to the field of noise control and acoustics. Additionally, in an effort to encourage and recognize students who are performing research and development in noise control and acoustics, a monetary award is given to the best student-authored technical paper presented at the conference.

The division also awards the Per Bruel Gold Medal for Noise Control and Acoustics in recognition of eminent achievement and extraordinary merit in the field of noise control and acoustics. The achievement includes useful applications of the principles of noise control and acoustics to the art and science of mechanical engineering. This medal, established in 1987, honors Dr. Per Bruel who pioneered the development of sophisticated noise and vibration measuring and processing equipment. The recipient is also recognized with a monetary award.

NCAD is managed by an executive committee and technical committees. The executive committee is filled by five members who commit to a five-year term. Technical committees are composed of people with diverse backgrounds, covering industry and academia, and with various focuses of research, development, and applications. The technical committees represent the key interests of engineers in the field of noise control and acoustics, and are crucial to the long-range success of the division. The three technical committees are Active and Passive Control, Structural Acoustics, and Aero/Hydro Acoustics.

The success of the NCAD is due to the participation of our members. We would like to specifically thank all of our volunteers for all their hard work and invite anyone interested in noise control and acoustics to participate. Any level of participation is welcome and encouraged. Members of the executive committee and of the technical committees are anxious to hear from those who have an interest in these fields. Participation in the annual committee meetings, which are held during the annual conference, can open up opportunities for engineers to interact, learn from one another, and develop new relationships with others who share an interest in noise control and acoustics.

Here is a brief look at each of the division's committees and at some of its activities.

Structural Acoustics Committee

Chair: Shung H. (Sue) Sung, shsung@asme.org

The Technical Committee on Structural Acoustics represents the technical areas related to numerical methods relating to structural-borne noise and the complex interaction between acoustics and structures. For decades, the committee has successfully led the technical sessions with many pioneering papers in numerical methods in vibrations and acoustics, general structural acoustics and vibration, and more recently phononic crystals and acoustic metamaterials. The papers on these topics have steadily increased, with even more advanced technically challenging applications.

In view of recent development of new lightweight materials, structural-acoustic interaction has become more important as the mechanical properties, stresses, topological surface shapes, and thermal and optical performance of the structure can be influenced by acoustics, and vice versa. For solid media in general, the sound propagation in porous materials such as in absorptive material and soil, as well as fluids, also involves the interaction of acoustics and structures.

The recent applications that use acoustics in non-contact monitoring applications also have prompted more understanding of sound propagation in air and solid media.

New sessions that have been launched since 2010 include: Noise, Vibration, Fatigue and Atmospheric Propagation, and Smart/ Functionally Graded Materials for Vibration and Noise Control Applications (IMECE 2010, Vancouver, British Columbia); Noise, Vibration, and Reliability in Vehicle Systems, Modeling and Analysis of Acoustic Wave Propagation, and Attenuation in Porous Materials (IMECE 2011, Denver); Acoustic Wave Propagation in Porous Media, Innovative Lightweight Materials for Noise Control and Abatement (2012 Inter-Noise INCE/NCAD/SAE, New York); and Acoustic and Elastic Wave Propagation, Nonlinear Vibration, Vibroacoustics-Based Energy Harvesting, Vibroacoustic Characterization, Monitoring and Damage Detection (IMECE 2012, Houston).

The committee invites ASME members and colleagues to contribute papers to these symposia. Besides the traditional topics sponsored by the committee in the past years, the newly added topics listed above will also attract multi-disciplinary technical papers to the symposia. We are looking forward to your attendance at the ASME IM ECE 2014 and to your participation in the recent developments in structural acoustics.

Aero/Hydro Acoustics Committee

Chair: Robert Tomko, tomkorp@yahoo.com

The goal of the Technical Committee on Aero/Hydro Acoustics is to increase the understanding of mechanisms related to both sound and vibrations that are generated and propagated in air, water, or both (e.g. multi-phase flows). This covers a wide range of sources and applications that are of interest to the academic community, industry, and government agencies. Specific interests include source mechanisms, flow over internal and external features, turbomachinery noise, flow tones and fluid instabilities, measurement and analysis techniques, fluid-structure interaction, and mitigation methods. Computational, analytical, and experimental methods are all well covered in multiple sessions annually at IMECE and at other conferences.

Our members consist of representatives from academia, government, and industry. We are active in organizing paper sessions, lectures, and tutorials.Topics addressed at conferences in the last couple of years include flow-induced vibration, vibration and acoustic measurement techniques and facilities, rotating machinery noise, and sound propagation in the atmosphere. At IMECE 2013, a longtime member of our committee, Dr. Michael Jonson of Penn State Applied Research Lab, led a tutorial on unsteady dynamometry.

Leadership has turned over this year from Dr. Zhongquan (Charlie) Zheng, professor in aerospace engineering, University of Kansas, to Robert (Bob) Tomko of Bechtel Bettis. Our committee encourages you to attend our conference in Montreal, Canada, November 14-20,2014. Please see http:// www.asmeconferences.org/congress2014 for general information about IMECE. In addition,Track 16 "Vibration, Acoustics & Wave Propagation" is the track sponsored by the division. We look forward to having you participate and join as a division member.

Active and Passive Noise Control Committee

Chair: Hugo E. Camargo, HCamargo@cdc.gov

The primary goal of the committee is to increase and disseminate theoretical and practical methodologies aimed at reducing noise. All aspects of the noise control process are of interest, from noise source identification to final installation and placement procedures of treatments. The topics of focus for the committee are active, passive, and hybrid approaches to controlling and abating unwanted sound.

In 2013, the division maintained a significant presence at the IMECE 2013 conference in San Diego, Calif., November 15-21. The Active and Passive Noise Control Technical Committee sponsored two sessions: Noise and Vibration Control I, and Noise and Vibration Control II.

The Noise and Vibration Control I session covered various topics from the development of noise controls for a shearer drum used in the mining industry, a multinational research effort to develop a gradient thickness plate to focus bending waves, an active Helmholtz resonator for acoustic noise attenuation, and the use of photodeformable materials to control paraboloidal thin shells, just to name a few. The Noise and Vibration Control II session focused on research currently being conducted in the automotive industry. Some examples of topics presented in this session include energy harvesting from car vibrations for wireless sensor nodes, vibration reduction systems for vehicle seats, time-frequency analysis of disc brake squeal, and tools for fault detection and vibration behavior monitoring of bearings. As the conference has done in previous years, IMECE 2014 will gather experts, academics, and researchers from around the world working on various aspects of active and passive noise control. Therefore, this is an opportunity not only to make contacts in the field and meet people with similar interests, but to learn about current research efforts in noise control. The Active and Passive Noise Control Technical Committee has proposed several sessions for IMECE 2014, including:

* Passive noise and vibration control.

* Active vibration control for complex structural systems.

* Applications of active noise and vibration control.

* Aircraft interior noise: modeling and methodologies.

* Application of noise controls in the mining industry.

Dynamometry Lecture

It was our pleasure to have Dr. Michael L. Jonson from the Pennsylvania State University Applied Research Lab give the NCAD Tutorial on Dynamometry this year. Dr. Jonson discussed applications of dynamometry and presented measurement methods for both steady and unsteady forces and moments. He also described methods for calibration, data reduction and processing. Both quasi-steady and unsteady measurements were considered. Dr.Jonson's presentation is available on the ASME community website forthe Noise Control and Acoustics Division. Past tutorials sponsored by NCAD, are also available at: https://community.asme.org/noise_control_acoustics_division/m/default.aspx.

Rayleigh Lecture: Walking-Induced Vibrations

The Rayleigh Lecture is an ASME division-level award given by the Noise Control and Acoustics Division in recognition of the lecturer's pioneering contributions to the fields of noise control and acoustics. Last year we were privileged to have Dr. Eric E. Ungar give the Rayleigh Lecture on "Walking-Induced Vibrations in Buildings: Evaluation and Prediction." His lecture reviewed vibration criteria for both sensitive equipment and human perception. He also described the characteristics of footfall-generated vibrations and discussed the current state of the art with regard to predictions. Dr. Ungar is currently the chief engineering scientist at Acentech Inc. in Cambridge, Mass.

Dr. Ungar's Rayleigh Lecture is available on the ASME community website for the Noise Control and Acoustics Division. Past Rayleigh Lectures are also available at: https://community.asme.org/noise_control_acoustics_division/m/default.aspx.

2012-2013 NCAD Executive Committee

The activities of the division are directed by an Executive Committee, which establishes the Division's policy and goals. The Executive Committee is supported by other committees as needed. The NCAD Executive Committee can be reached at ncad@asme.org.

LIANG-WU CAI

Kansas State University, Vice-Chair

Dr. Liang-Wu Cai is currently an associate professor in the Department of Mechanical and Nuclear Engineering at Kansas State University. His research interests include applied mechanics, mechanics of composite materials, mechanical vibration, acoustics, ultrasonic nondestructive evaluation, sonic crystals, and acoustic metamaterials.

BRENT PAUL

Alion Science and Technology, Chair

(bpaul@alionscience.com)

Brent Paul is a principal engineer in the Hydrodynamics and Hydroacoustic Signatures Group at Alion Science and Technology. His areas of expertise include the prediction of flow induced noise, acoustic analysis of advanced turbomachinery, vortex shedding, and computational fluid dynamics.

NOAH SCHILLER

NASA Langley Research Center, Secretary/Treasurer

Dr. Noah H. Schiller is a research engineer in the Structural Acoustics Branch at NASA Langley Research Center where he is involved in aircraft noise research. His research interests include active noise and vibration control, vibroacoustic modeling, and more recently phononic crystals and acoustic metamaterials.

KRISTIN CODY

Bechtel Bettis, Inc., Program Chair

Dr. Kristin Cody is a principal engineer for the Bechtel Marine Propulsion Corp., which operates the Bettis and Knolls Atomic Power Laboratories for the Department of Energy. Her research interests include flow-induced noise and vibration and structural-acoustic. interactions.

CHARLIE ZHENG

Member

Dr. Zhongquan (Charlie) Zheng is currently professor in the Aerospace Engineering Department at University of Kansas, Fellow of ASME, and Associate Fellow of AIAA. He received his B.S. and M.S. degrees from Department of Engineering Mechanics at Shanghai Jiao Tong University in 1984 and 1987 respectively, and his Ph.D. degree in 1993 from Department of Mechanical Engineering and Mechanics, Old Dominion University. He has been a member of numerous TCs in ASME and AIAA, Chair of Computational Fluid Dynamics TC in ASME, and is associate editor of The Journal of Fluids Engineering.

Journal of Vibration and Acoustics

The Journal of Vibration and Acoustics is the ASME journal best suited to match the needs, information, and careers of the members of NCAD. The division supports the journal by providing three associate editors for reviewing and editing paper submissions. Currently they are Liang-Wu Cai, Theodore Farabee, and Lonny Thompson.

The purpose of the Journal of Vibration and Acoustics is to serve as a vehicle for the communication of original research results of permanent interest in all areas of vibration and acoustics. Papers published by the journal are full-length research papers of considerable depth. The journal also presents Technical Briefs, which are intended to serve as a means for the rapid communication of recent developments in an abridged form.

Examples of specific topic areas covered include: vibration of continuous and lumped parameter systems; linear and non-linear vibrations; random vibration; modal analysis; mechanical signatures; structural dynamics and control; vibration suppression; vibration isolation; passive and active damping; machinery dynamics; rotor dynamics and vibration; acoustic emission; noise control; machinery noise; structural acoustics; fluid-structure interaction; aeroelasticity; and flow-induced noise and vibration.

Per Bruel Award

The Per Bruel Gold Medal for Noise Control and Acoustics was established in honor of Dr. Per Bruel, who pioneered the development of sophisticated noise and vibration measuring and processing equipment. The medal recognizes eminent achievement and extraordinary merit in the field of noise control and Acoustics, including useful applications of the principles of noise control and acoustics to the art and science of mechanical engineering.

The winner in 2013 was Richard H. Lyon of the R.H. Lyon Corp.

Anyone wishing to nominate deserving engineers for the Per Bruel award is welcome to do so by submitting the form at: https://www.asme.org/about-asme/get-involved/honors-awards/achievement-awards/ per-bruel-gold-medal-for-noise-control-and.

Inter-Noise 2015

Every three to four years NCAD supports a non-ASME conference to explore the synergy with sister organizations. As it has been done in 2008 (NoiseCon) and 2012 (Inter-Noise), NCAD will join forces with the Institute of Noise Control and Engineering for Inter-Noise 2015. For more information please check http://www.internoise2015.com/.

New ASME Fellow, 2012

DR. STEPHEN HAMBRIC

Penn State/ARL

Senior Scientist, Noise Control and Hydroacoustics Division
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Publication:Mechanical Engineering-CIME
Geographic Code:1USA
Date:Mar 1, 2014
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