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…

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…

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…