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2013 年 04 月 10 日
Seminar - Symposium on the Penn State Center for Acoustics and Vibration, along with recent work on the vibroacoustics of sandwich panels by Dr. Stephen A. Hambric

Date:   10 April 2013 (Wednesday)

Time:   11:00 am – 12:00 pm

Venue:  EF305, The Hong Kong Polytechnic University

Abstract:

The vibroacoustics of two honeycomb core/composite face sheet sandwich panels are presented.  The panels are examined separately and together when coupled with different joint connections.  An overlapping bolted joint and two sleeve joints are investigated.  Modal analysis frequency response functions are used to compute several quantities, including conductance, energies, and coupling loss factors.  To confirm the accuracy of the coupling loss factors, which are computed using an experimental statistical energy analysis (E-SEA) approach, transmission coefficients are also computed using wavenumber transform methods.  The E-SEA and transmission coefficient-based coupling loss factors match well, confirming the respective techniques.

Biosketch:

Dr. Stephen A. Hambric is a Senior Scientist at the Applied Research Lab at Penn State, a Professor in the Graduate Program in Acoustics, and Associate Director of Penn State’s Center for Acoustics and Vibration (CAV).  He has authored or co-authored over 70 conference papers and 30 journal articles.  He teaches courses in Structural Acoustics, and Research and Writing for Acousticians.  He is a Fellow of the Institute for Noise Control Engineering (INCE) and of the American Society of Mechanical Engineers (ASME), and former chair of the ASME Noise Control and Acoustics Division.  He was General Chair of the Internoise 2012 conference, held in New York City in August 2012, and currently serves on the International INCE Board of Directors.