| Research
Interests
Dr. Blough’s research includes dynamic measurement problems,
developing new digital
signal processing algorithms to understand NVH type problems and
ways to improve the NVH characteristics of virtually any machine.
He has made measurements on items as small as individual turbine
blades to items as large as 45m diameter radio telescopes and many
machines in between including automobiles, snowmobiles, M1 tanks,
locomotives, and appliances. He has worked on automotive and snowmobile
powertrains and other vehicle components to make them quieter. Currently,
he is researching the implementation of active noise control systems
in passenger vehicles.
Dr.
Blough developed order tracking algorithms for processing data on
rotating machinery that are commercially licensed. Additional digital
signal processing projects have included Kalman Filter development
for a specific automotive application
and Sound and Vibration Quality Jury and metric studies.
Dr.
Blough is well versed in nearly all experimental NVH techniques
including Modal Analysis, Transfer Path Analysis, Time-Frequency
analysis, etc. He routinely teaches many of these techniques in
the classroom and industry short courses. He also has experience
in FEA and multi-body dynamics modeling.
Selected Publications
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Blough, J.R., Gwaltney, G. and Vizanko, J., “Quantifying
How the Environment Effects SAE-J192 Pass-by Noise Testing of
Snowmobiles,” Proceedings of the 2005 SAE Noise and Vibration
Conference, May 2005, Traverse City, MI. SAE
Paper number: 05NVC-236.
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Kowalski, D., Blough, J.R., and Anderson, C., “Cavitation
Detection in Automotive Torque Converters using Nearfield Acoustical
Measurements,” SAE Noise & Vibration Conference and
Exhibition, May 2005, Traverse City, MI, SAE paper
number 2005-01-2516.
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Dhaliwal, A.S., Parker, G.G., and Blough, J.R., “Active
Structural Acoustic Control of Road Noise in a Passenger Vehicle,”
International Journal of Vehicle Autonomous Systems, Special Issue
on Intelligent Vehicle Systems, Volume 2,
Numbers 3 & 4, pp. 168-188, 2004.
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Blough J.R. “A Survey of DSP Methods for Rotating Machinery
Analysis, What is Needed, What is Available,” Special Edition
of Journal of Sound and Vibration from India-USA Symposium 2001—Emerging
Trends in Vibration and Noise Engineering, Dec. 2001.
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