.... Consequently, the approach used for the optimal design of the multichamber hybrid mufflers under space and back pressure constrained conditions is indeed easy and quite effective. 09 11 2010 28 09 2011 18 01 2012 18 01 2012 acoustic noise genetic algorithms reliability silencers...

... to the relative size of the piezoelectric actuator, are computed in some lower-to-medium frequency range. 24 02 2011 05 08 2011 18 01 2012 18 01 2012 acoustic noise acoustic wave absorption acoustic wave propagation acoustic wave transmission discs (structures) elasticity finite...

... performance during live scans. The controller produced an overall reduction of 10.6 dBA across the full audible spectrum. 04 10 2010 01 06 2011 09 01 2012 09 01 2012 acoustic noise acoustic transducers acoustic wave absorption active noise control biomedical equipment...

...Gary Koopmann; Ulf Michel 06 09 2011 22 11 2011 08 12 2011 08 12 2011 acoustic intensity measurement acoustic noise aeroacoustics fans microphones pipe flow turbomachinery vibrations Wolfgang Neise, renowned for his life-long contributions to advancing...

.... Sound emission jet noise ducted exhaust acoustic field acoustic intensity acoustic noise aeroacoustics ducts jets nozzles 28 09 2010 30 03 2011 28 11 2011 28 11 2011 2011 American Society of Mechanical Engineers ...

... 04 10 2011 04 10 2011 acoustic noise acoustic signal processing propellers ships structural acoustics A ship’s radiated acoustic signature is known after an acoustic range measurement. However, it continually evolves and changes. Machinery becomes out-of-balance, degrades...

... system induces direct acoustic disturbances and fuselage vibrations that may cause unacceptable ride discomfort, along with a significant impact on the fatigue-life of the structures (and hence on maintenance costs). acoustic field acoustic noise acoustic waves aeroacoustics aerospace...

... and thus adds a step forward to the traditional single-panel single-cabin analysis. aircraft cabin noise cylindrical cabin closed-form analytical model flow-induced noise and vibration random vibration structural-acoustic coupling acoustic intensity measurement acoustic noise...

... to severe loads such as the overpressure and the acoustic loads. These are among the most severe loads that a launcher can encounter during flight and they come from the rocket-exhausts and their interactions with the launch pad (see Figs. 1 2 ). acoustic field acoustic intensity acoustic noise...

... 04 03 2010 08 10 2010 08 10 2010 acoustic noise damping engines silencers Perforated tubes are commonly found inside automotive mufflers. They are used to confine the mean flow in order to reduce the back-pressure to the engine and the flow generated noise inside...

... 09 2009 27 04 2010 08 10 2010 08 10 2010 acoustic noise finite element analysis piezoelectric materials resins structural acoustics vibrations low-frequency noise reduction multiphysics modeling active structural acoustic control Effective noise reduction...

... reduction performance of the void decoupling layer. 21 07 2009 07 06 2010 16 09 2010 16 09 2010 acoustic impedance acoustic noise acoustic wave absorption acoustic wave transmission noise abatement plates (structures) structural acoustics underwater acoustic propagation...

.... 19 10 2009 01 04 2010 14 09 2010 14 09 2010 acoustic noise acoustic waves compressors finite difference methods Fourier transforms Helmholtz equations vibrations The pressure pulsation problem continues to be one of the most difficult problems in compressor...

... demonstrated. 01 11 2009 16 03 2010 26 08 2010 26 08 2010 acoustic noise acoustic resonance aeroacoustics pipe flow silencers simulated annealing space constraints perforated intruding inlet simulated annealing numerical decoupling technique In the past three...

... the performance of the overall system. 20 10 2008 19 05 2009 20 11 2009 20 11 2009 acoustic noise scanning probe microscopy vibration isolation vibration isolation feedback control transfer function coupling effects stability frequency response function...

... acoustic noise aeroacoustics blades fans rotors One of the key parameters to be considered in the design of axial-flow fans is the acoustic signature of the fan. This factor has similar implications in all cases in which the fan is one of the main contributors to the overall tone and broadband...

... isolated from the leading edge. 27 01 2006 05 07 2006 marine vehicles vibrations vibration control noise abatement acoustic noise Stator vanes and control surfaces or rudders downstream from marine rotors are often excited into high levels of vibration by the rotor’s time...

... belt drive systems dynamic analysis non-linear simulation bond graph interpretation belts drives power transmission (mechanical) vibrations acoustic noise shear deformation fatigue 02 09 2004 03 02 2006 2006 American Society of Mechanical Engineers ...

... silencers exhaust systems aeroacoustics vibrations acoustic noise noise abatement diesel engines The higher and higher penetration of diesel engines in the passenger car market is due to their higher efficiency and, thereby, reduced fuel costs. Although diesel engines are favorable in terms...

... acoustic noise noise abatement vibrations machine bearings rotors stators Rieger N.F. , 1986 , Balancing of Rigid and Flexible Rotors , The Shock and Vibration Information Center, United States Department of Defense. Wilcox J.B. , 1967 , Dynamic Balancing of Rotating...