hamilton@mail.utexas.edu – Texas Acoustics

Design and Fabrication of Ultra-wideband Tunable Graphene-based NEMS Resonators

Friday, November 18, 2016 4:00 p.m. in ETC 4.150 Professor Michael A. Cullinan Department of Mechanical Engineering The University of Texas at Austin www.me.utexas.edu Graphene-based nanoelectromechanical (NEMS) resonators have the potential to overcome many of the limitations of traditional microelectromechanical (MEMS) resonators, because of the outstanding electrical and mechanical properties that graphene offers such as…

November 14, 2016hamilton@mail.utexas.eduAcoustics Seminars

From Basic Research to Startup: The Development and Commercialization of University-Based Acoustics Research

Friday, November 11, 2016 4:00 p.m. in ETC 4.150 Dr. Mark S. Wochner AdBm Corp Austin, Texas www.adbmtech.com An underwater noise abatement system based on research performed at The University of Texas at Austin’s Applied Research Laboratories has been commercialized and is now being prepared for its final demonstration before it enters the offshore wind…

November 11, 2016hamilton@mail.utexas.eduAcoustics Seminars

Modeling of Strong Shock Waves from Explosions: Not with a Whimper but a Bang

Friday, November 4, 2016 4:00 p.m. in ETC 4.150 Professor Won-Suk Ohm School of Mechanical Engineering Yonsei University Seoul, South Korea http://web.yonsei.ac.kr/acoustics Blast waves produced by such events as nuclear explosions are considered as “strong” shock waves, the description of which requires a theoretical framework more accurate than the second-order models such as the weak-shock…

October 30, 2016hamilton@mail.utexas.eduAcoustics Seminars

History and Applications of Acoustic Radiation Force

Friday, October 28, 2016 4:00 p.m. in ETC 4.150 Benjamin C. Treweek Applied Research Laboratories The University of Texas at Austin www.arlut.utexas.edu From its theoretical beginnings to its modern applications in both optics and acoustics, radiation force has received considerable attention. The phenomenon arises due to momentum transfer from an incident wave field—either electromagnetic or…

October 28, 2016hamilton@mail.utexas.eduAcoustics Seminars

Finite Element Modeling for Ocean Acoustics Applications

JOINT ICES SEMINAR AND ACOUSTICS SEMINAR *** Note change of room, day, and time *** Thursday, October 27, 2016 3:30 pm in POB 6.304 Dr. Marcia J. Isakson Applied Research Laboratories The University of Texas at Austin www.arlut.utexas.edu Since electromagnetic propagation in seawater is very limited, acoustics provide the primary means of remote sensing and…

October 27, 2016hamilton@mail.utexas.eduAcoustics Seminars

Bubble Acoustics and the Sound of Water Drops

Friday, October 21, 2016 4:00 p.m. in ETC 4.150 Dr. Kyle S. Spratt Applied Research Laboratories The University of Texas at Austin www.arlut.utexas.edu The acoustic properties of gas bubbles in liquids has become a prevalent field of study in the last century due to the large number of practical applications in both underwater acoustics and…

October 21, 2016hamilton@mail.utexas.eduAcoustics Seminars

The X-15 Research Rocket Airplane: A Step into Space at Six Times the Speed of Sound

Friday, October 14, 2016 4:00 p.m. in ETC 4.150 Professor Ronald L. Panton Department of Mechanical Engineering The University of Texas at Austin www.me.utexas.edu The X-15 Airplane was carried aloft under the wing of a B-52 bomber. After being released it started a rocket motor for a flight and then returned to an unpowered landing…

October 14, 2016hamilton@mail.utexas.eduAcoustics Seminars

Willis Coupling in Acoustic Metamaterials

Friday, October 7, 2016 4:00 p.m. in ETC 4.150 Michael B. Muhlestein Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu Acoustic metamaterials (AMM) are deeply subwavelength acoustic structures which have been engineered to exhibit specific, often exotic, material properties. Material properties are related to field variables through constitutive equations, such as Hooke’s law,…

October 7, 2016hamilton@mail.utexas.eduAcoustics Seminars

Modeling and Design of Diffraction Gratings for Optically-Read Vibration Sensors

Friday, September 23, 2016 4:00 p.m. in ETC 4.150 Randall P. Williams, PE Department of Mechanical Engineering, and Microelectronics Research Center The University of Texas at Austin http://www.mrc.utexas.edu Displacement detection using optical interferometric techniques allows for high sensitivity and low sensor self-noise which are unmatched by other displacement measurement methods. However, diffraction gratings commonly used…

September 23, 2016hamilton@mail.utexas.eduAcoustics Seminars, Current Seminars

“Great Place to Stay. Beware the Train!”

Friday, September 16, 2016 4:00 p.m. in ETC 4.150 David A. Nelson, INCE Bd. Cert., PE Nelson Acoustics Elgin, Texas www.nelsonacoustical.com It’s a nice hotel, convenient to everything, comfortable, nice staff, etc. But one-third of the online reviews mention its only drawback: the train. A freight train passes behind the hotel roughly once per hour.…

September 16, 2016hamilton@mail.utexas.eduAcoustics Seminars, Current Seminars

Optimizing Acoustical Parameter-Extraction Methods

Friday, September 9, 2016 4:00 p.m. in ETC 4.150 Dr. Daniel R. Tengelsen Bose Corporation Framingham, Massachusetts www.bose.com The impedance tube has long been used as an acoustical parameter-extraction device due to the fact that, under certain assumptions, it can be modelled using a one-dimensional wave equation. Since the 1980’s, several techniques have been proposed…

September 9, 2016hamilton@mail.utexas.eduAcoustics Seminars, Current Seminars

Brief Historical Highlights of Underwater Acoustics and the Defense Research Laboratory and Applied Research Laboratories of the University of Texas at Austin

Thursday, September 1, 2016 4:00 p.m. in ETC 5.132 Dr. Thomas G. Muir Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu Man’s involvement with sound in the ocean has been motivated by intellectual curiosity as well as by necessity, in response to threats. These have included navigational hazards, catastrophes, and world events including…

September 1, 2016hamilton@mail.utexas.eduAcoustics Seminars, Current Seminars

Acoustical Engineering at Dell

Friday, April 29, 2016 4:00 p.m. in ETC 4.150 Chris E. Peterson and Paul Waters Concept Systems Engineering and Acoustical Engineering Teams Dell, Inc. Round Rock, Texas www.dell.com/en-us Acoustical engineering at Dell, Inc., covers several areas of server design. Traditional server acoustical metrics include A-weighted sound power level and A-weighted sound pressure level, the measurements…

April 29, 2016hamilton@mail.utexas.eduAcoustics Seminars

Vibroacoustic Loads that Form from Clustered Rockets Undergoing Stagger Startup

Friday, April 22, 2016 at 4:00 p.m. in ETC 4.150 Dr. Charles E. Tinney Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu The effect of stagger startup on the vibroacoustic loads that form during the end-effects regime of clustered rockets is studied using both full-scale (hot gas) and laboratory scale (cold gas) data…

April 22, 2016hamilton@mail.utexas.eduAcoustics Seminars

Computing Sound Location in the Brain

Friday, April 8, 2016 4:00 p.m. in ETC 4.150 Professor Nace Golding Neuroscience Department The University of Texas at Austin https://neuroscience.utexas.edu One of the most challenging computations in the brain is that of computing sound location. Horizontal sound location is computed by detecting small time differences (so-called “ITDs”) in the time of arrival of acoustic…

April 8, 2016hamilton@mail.utexas.eduAcoustics Seminars

Airborne Capacitive Micromachined Ultrasonic Transducer Cell Design

Friday, March 25, 2016 4:00 p.m. in ETC 4.150 Dr. Asli Yilmaz Electrical Engineering Department Bilkent University Ankara, Turkey http://www.ee.bilkent.edu.tr/ All transducers used in airborne ultrasonic applications, including capacitive micromachined ultrasonic transducers (CMUTs), incorporate loss mechanisms to increase the frequency bandwidth. However, CMUTs can yield high efficiency in airborne applications and unlike other technologies, they offer…

March 20, 2016hamilton@mail.utexas.eduAcoustics Seminars

Structural Health Monitoring of Civil Infrastructure Systems by using Guided Ultrasonic Waves

Friday, March 11, 2016 4:00 p.m. in ETC 4.150 Professor Salvatore Salamone Department of Civil, Architectural, and Environmental Engineering The University of Texas at Austin http://caee.utexas.edu The increase in traffic volume and loads applied to aging and deteriorating infrastructure systems, and the desire to reduce downtime associated with regular maintenance operations have all sparked interest and research…

March 11, 2016hamilton@mail.utexas.eduAcoustics Seminars

Contributions of the Harvard Underwater Sound Lab to the Development of Underwater Acoustics

Friday, March 4, 2016 4:00 p.m. in ETC 4.150 Dr. F. Michael Pestorius Former Director Applied Research Laboratories The University of Texas at Austin http://www.arlut.utexas.edu The Harvard Underwater Sound laboratory, or HUSL as it was known, was founded in June 1941 under the auspices of the year-old National Defense Research Council. It existed throughout World…

March 4, 2016hamilton@mail.utexas.eduAcoustics Seminars

Acoustic Monitoring of Femtosecond Laser Ablation

Friday, February 19, 2016 4:00 p.m. in ETC 4.150 Kenneth Ledford The Graduate Program in Acoustics The Pennsylvania State University http://www.acs.psu.edu/ Acoustic measurement methods can often be used as an inexpensive and robust data collection tool. One such case is using acoustic data to better understand some various nonlinear behaviors of high intensity femtosecond laser…

February 19, 2016hamilton@mail.utexas.eduAcoustics Seminars

Visualizing Noise Sources in an Aero-Acoustic Wind Tunnel with Real-Time Acoustic Beamformers

Friday, February 12, 2016 4:00 p.m. in ETC 4.15 Kurt Veggeberg Business Development Manager, Test Cell Applications National Instruments Austin, Texas http://www.ni.com/ The Hyundai Aero-acoustic Wind Tunnel (HAWT) is a ¾ semi-open jet test section with a closed circuit that was designed to improve aerodynamic and wind noise characteristics of vehicles. The $40 Million facility was…

February 12, 2016hamilton@mail.utexas.eduAcoustics Seminars

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Author: hamilton@mail.utexas.edu