...C. Lai; X. Sun; C. Dasch; G. Harmon; M. Jones Resonance inspection uses the natural acoustic resonances of a part to identify anomalous parts. Modern instrumentation can measure the many resonant frequencies rapidly and accurately. Sophisticated sorting algorithms trained on sets of good...

... technique acoustic noise acoustic resonance aeroacoustics pipe flow silencers simulated annealing 01 11 2009 16 03 2010 26 08 2010 26 08 2010 The STL with respect to frequencies at various mufflers (targeted tone: 800 Hz) By using the formulas of Eq. 9...

... by one Duffing equation in Refs. 8 9 . Hadian and Nayfeh ( 10 ) analyzed the interaction of three axisymmetric vibration modes using the multiple scale method. circular plates with cut-outs R -function method conjugate modes multiple scale method internal resonances acoustic...

... field acoustic intensity acoustic resonance acoustic resonators acoustic wave transmission aeroacoustics blades fans noise abatement rotors stators Shroud pressure measurements were made in the fan facility using the B&K pressure probe microphone. A solid resonator end piece with 12...

... 12 08 2006 01 07 2008 acoustic resonance ball bearings elasticity nonlinear systems rotors shafts springs (mechanical) vibrations Some rotating machines, such as generators, have a rotor with an asymmetry in the shaft stiffness. Most of these rotors are supported...

... specimens). Two of the parameters are linear in nature (splitting of modes and frequency shifts) and the third is nonlinear (frequency shift with increase in excitation amplitude). 28 07 2006 06 02 2007 bone nondestructive testing crack detection bioacoustics vibrations acoustic...

... cases studied. However, it was found that strong coupling between the thin-walled structure and the acoustic cavity exists in the vicinity of any uncoupled acoustic resonance. Thus, the coupled properties of the systems were found to be dominated by the uncoupled acoustic resonances. As the focus...

... vibrations structural acoustics damping acoustic resonance vibrations eigenmodes intrinsic damping nonlinear damping modal truncation The dynamic identification of thin structures for their qualification and certification requires a robust knowledge of vibrating intrinsic dissipation...

.... The behavior of the vibrating system is calculated by a simple model and compared with experimental results. 12 11 2004 27 02 2006 level measurement vibrations acoustic resonance Many automated devices for fluid handling require a liquid level detection (LLD). For example, pipetting...

... acoustic resonance finite element analysis modal analysis rotors Rotating machines appear everywhere in our daily life. They could range from high-tech applications, such as jet engines and computer hard disk drives (HDD), to ordinary household appliances, such as washing machines...

... , y s ) space. The parametric forcing period of normalized transformed system is 2.0 26 01 2004 21 12 2005 reduced order systems vibrations structural acoustics Lyapunov methods damping nonlinear systems pendulums acoustic resonance Many structural systems...

... field to display the beat phenomenon and primary resonance are also presented and discussed. 12 08 2003 07 01 2005 09 01 2005 18 05 2005 vibrations magnetic fields transient analysis temperature thermal conductivity Runge-Kutta methods damping acoustic resonance...

... vibrations friction acoustic resonance structural acoustics oscillators Friction-induced oscillations extensively exist in engineering systems, such as in disk brake systems, in turbine blades, and in string music instruments. The discontinuity of the system, which is caused by friction forces...

... linear systems control system synthesis dynamic response acoustic resonance three-term control feedback linearisation techniques torque control elastic constants active vibration isolation feedback linearization generalized force-mobility function generalized transmissibility function...

... AND ACOUSTICS . Manuscript received February 25, 2003; final revision, February 6, 2004. Review conducted by R. Parker. 25 February 2003 06 February 2004 21 03 2005 damping vibrations flexible structures mechanical engineering acoustic resonance In the design of high-speed...

... revision, December 23, 2003. Review conducted by D. Quinn. 24 May 2003 23 December 2003 21 03 2005 vibrations coating techniques sheet metal processing acoustic resonance Mechanical systems with time-periodic coefficients may exhibit parametric resonances 1...

... oscillators band-pass filters micromechanical devices oscillations dynamic response vibrations acoustic resonance structural acoustics electrostatic devices 16 07 2004 10 01 2005 2005 American Society of Mechanical Engineers ...

... for publication in the JOURNAL OF VIBRATION AND ACOUSTICS . Manuscript received June 2001; Revised Dec. 2003. Associate Editor: J. P. Cusumano. 01 June 2001 01 Dec 2003 30 07 2004 surface acoustic waves vibrations acoustic resonance Galerkin method 7 (a) Time history...

.... Tam , C. K. W. , and Block , P. J. W. , 1978 , “ On the Tones and Pressure Oscillations Induced by Flow Over Rectangular Cavities ,” J. Fluid Mech. , 89 , pp. 373 – 399 . Ziada , S. , and Shine , S. , 1999 , “ Strouhal Numbers of Flow-excited Acoustic Resonance of Closed Side...

... AND ACOUSTICS . Manuscript received August 2000; Revised August 2002. Associate Editor: J. H. Ginsberg. 01 August 2000 01 August 2002 06 01 2003 structural acoustics acoustic resonance eigenvalues and eigenfunctions The question of the degree of fidelity required for accurate...