... . 10.1109/TBME.2008.923112 [16] Borza , D. N. , 2011 , “ Vibration Measurement by Speckle Interferometry Between High Spatial and High Temporal Resolution ,” Holography, Research, and Technologies , J. Rosen , ed., InTech , Rjeka, Croatia , pp. 325 – 346 . [17] Phidgets 1104, 2009...

... is based on a 1:3 scale model of a T-junction with a flexible interlayer. It was used to obtain a significant reduction in the cost of the configurations under study. We chose to carry out vibration measurements by near-field acoustic holography (NAH) in order to avoid the risk of accelerometer...

... Vibration Measurement of Cylindrical Structures Using a Continuous Scanning LDV Technique ,” Presented at the 25th International Modal Analysis Conference (IMAC XXV) , Orlando , FL . 5 Stanbridge , A. B. , and Ewins , D. J. , 1999 , “ Modal Testing Using a Scanning Laser Doppler...

... finite element analysis modal analysis vibration measurement 26 10 2009 26 05 2010 25 03 2011 25 03 2011 For example, Fig. 9a shows the R ratio calculated for the predicted frequency of 28,443 Hz (with a 0.8 mm mesh size). The maximum integral ratio of 0.708...

... scanning laser vibrometers. acoustic wave propagation bending elastic waves honeycomb structures Poisson ratio vibration measurement vibrations The concept of a chiral topology was first proposed at molecular level by Wojciechowski ( 8 ), and then as structural lattice component...

... from the National Science Foundation (Grant No. CMS-0528263). 20 01 2009 25 06 2009 14 04 2010 14 04 2010 elasticity Fourier series plates (structures) vibration measurement vibrations Plates are one of the most commonly used structural elements...

.... local mean decomposition empirical mode decomposition health diagnosis rotating machinery failure (mechanical) machinery numerical analysis spectral analysis structural acoustics vibration measurement vibrations 24 11 2008 08 06 2009 18 03 2010 18 03 2010...

... 2009 13 01 2010 13 01 2010 accelerometers rolling bearings sensors vibration measurement vibrations Low speed rotating machine components can be seen in various mechanical systems such as steel mills, wind turbines, and rotating biological contactors. Bearings...

... bearings vibration measurement wavelet transforms signature extraction wavelet transform bearing diagnosis Rolling element bearings enable low-friction rotational motion in a variety of machine systems, from bicycles to electrical power generators and jet engines. Because of material...

... spectral analysers vibration measurement A cyclic symmetric structure of order N consists of N identical substructures S ( i ) , i = 1 , 2 , … , N , each of which spans an angle of 2 π / N . Cyclic symmetric rotors often appear in rotary...

... support vector machines time series vibration measurement vibrations The extensive literature on structural health monitoring (SHM) has documented the critical importance of detecting damage in aerospace, civil, and mechanical engineering systems at the earliest possible time. For instance...

... 31 06 2007 04 02 2008 condition monitoring feature extraction machine testing rolling bearings signal processing vibration measurement empirical mode decomposition intrinsic mode function health diagnosis of rotary machine components rolling bearings Growing demand...

...Ben J. Halkon; Steve J. Rothberg Laser Doppler vibrometry is now a well established technique enabling noncontact vibration measurements in the most challenging of environments. Rotor vibration measurements are often highlighted as a major application of laser vibrometers due to their noncontact...

.... Ginsberg. 01 September 2001 01 Dec 2003 30 07 2004 vibration measurement vibrations sensors organic compounds beams (structures) displacement measurement design active noise control attenuators The focus of this research is in part to that of a larger study aimed...

...Yacine M. Amraoui; Nick A. J. Lieven This paper demonstrates a new method of conducting a noncontacting vibration measurement on light structures. Although laser vibrometry provides a routine method of acquiring response data, the method of achieving noncontacting point excitation of structures...

... . Manuscript received Aug. 2001; Revised Dec. 2001. Associate Editor: A. F. Vakakis. 01 Aug 2001 01 Dec 2001 20 09 2002 vibration measurement laser velocimetry vibrations steel shear modulus Young's modulus velocity measurement Power is defined as the time-averaged...

... 01 July 2001 vibration measurement turbines automatic testing piezoelectric devices electric sensing devices Modal analysis and dynamic structural identification have become an intrinsic part of current engineering practice. Structural frequencies, damping, and modes shapes...

... frequencies and corresponding mode shapes can be obtained experimentally at the same time by the proposed AF-ESPI method. Excellent quality of the interferometric fringe patterns for the mode shapes is demonstrated. vibration measurement light interferometry Holographic interferometry opened new...

... OF VIBRATION AND ACOUSTICS . Manuscript received Oct. 1999; revised Aug. 2000. Associate Editor: M. I. Friswell. 01 Oct 1999 01 Aug 2000 micromechanical devices vibration measurement vibrations dynamic testing measurement by laser beam Modal parameters govern the dynamic...

... analysis vibration measurement Rolling element bearings are widely used as low friction joints between rotating machine components. Since the rotational motion is often a significant function of the overall system, such as wheels on a train, rollers in a paper mill, or a rotor on a helicopter...