Noise and Vibration Conference and Exhibition

June 12-15, 2017

Grand Rapids, Michigan, USA

DeVos Place Convention Center

Meet the Keynotes

Tuesday, June 13
8:30 am - 9:30 am, Ballroom A/B

Ahmet Selamet Prof. Ahmet Selamet
Fellow, Acoustical Society of America
Fellow, SAE International
Senior CAR Fellow
Professor, Mechanical and Aerospace Engineering
The Ohio State University

“Flow Instabilities and Sound: From Turbochargers to Wind Instruments”

Flow instabilities in the breathing system of engines and the resulting noise are discussed in connection with flow separation and surge in turbochargers, and flow-acoustic coupling in induction systems. The impact of incidence angle at the turbocharger compressor inducer plane is illustrated both in terms of boosting and acoustic performance. Variety of time-resolved measurements for internal pressure, velocity, and temperature reveals the character of instabilities and their consequences. These measurements are complemented by videos from selected experimental observations and animations from pertinent computational predictions. The approach of reproducing the specific engine physics of interest on bench top experimental facilities is particularly emphasized in gaining further insight into the fundamental mechanisms leading to noise as well as in developing effective remedies.

Prof. Ahmet Selamet received his Ph.D. in mechanical engineering from University of Michigan in 1989. He joined the Department of Mechanical Engineering of The Ohio State University in 1996, where he was promoted to Professor in 2001. From 2012 to 2016, he also served as the elected Chair of the Department of Mechanical and Aerospace Engineering at The Ohio State University. Selamet’s research centers around nonlinear wave dynamics and acoustics, noise control, combustion, fluid mechanics, and heat transfer as applied primarily to internal combustion engines. Over the past three decades, he has conducted extensive analytical, computational, and experimental work to advance the fundamental understanding of wave dynamics and acoustics in engine breathing systems (induction/in-cylinder/exhaust), including the development and validation of pertinent submodels in engine simulations to improve the performance and noise predictions. Selamet recently has focused his attention on turbocharger acoustics and autoignition in combustion chambers. He has disseminated the research findings in more 215 articles in journals/proceedings and co-authored a book on Heat Transfer. Among his recognitions are Harrison, Lumley, Innovators, and MacQuigg Awards from The Ohio State University, and Ralph R. Teetor and Ralph K. Hillquist NVH Lifetime Achievement Awards from SAE International. He has been elected a Fellow of both the Acoustical Society of America (2001) and SAE International (2003).

Wednesday, June 14
12:00 pm - 1:30 pm, Ballroom A/B

Gabriella Cerrato Gabriella Cerrato
Manager, Global Engineering Services
Bruel & Kjaer

"Changes and Trends in Noise and Vibration Engineering: The Consultant’s Experience"

In her remarks, Gabriella Cerrato will focus on the changes that she has witnessed in the industry and address current trends. She will provide a personal perspective on changes in consumers’ expectations and in NVH technology, along with her assessment of how cultural, geographical, and gender factors have shaped her experience as a noise and vibration consultant.

Gabriella Cerrato has a Doctorate in Theoretical Physics from the University of Torino, Italy. She has worked in the noise and vibration control field for more than 25 years, with positions ranging from Acoustic Systems Engineer and Manager at FIAT in Italy (Active Noise and Vibration Group) to Technical Director of the MTS Systems consulting business unit in Detroit. Her areas of expertise are diagnostics of noise and vibration concerns, sound and vibration quality measurement and target setting, testing for correlation of CAE models, and synthesis/prediction of contributions to products’ noise and vibration performance. Cerrato co-founded Sound Answers in 2005 and has led the Sound Answers team in several Small Business Innovation Research (SBIR) Phase 1 and Phase 2 projects for the U.S. Department of Defense. She teaches several seminars and training classes a year and has co-authored papers for various professional conferences and magazines. She is an active member of the SAE NVH committee and of other professional societies, including AIAA, AES, ASA, and INCE. In November 2015, Sound Answers was acquired by Bruel & Kjaer to form the Bruel & Kjaer Global Engineering Services, of which Cerrato is now the manager.