Identification of energy sources and sinks in plates by means of a scanning laser Doppler vibrometer

1996 ◽  
Vol 44 (2) ◽  
pp. 61 ◽  
Author(s):  
Jonathan D. Blotter ◽  
Robert L. West
Keyword(s):  
Laser Doppler Vibrometer ◽  
Laser Doppler ◽  
Scanning Laser ◽  
Energy Sources ◽  
Sources And Sinks ◽  
Scanning Laser Doppler Vibrometer

scholarly journals Experimental and Analytical Power Flow in Beams Using a Scanning Laser Doppler Vibrometer

1996 ◽  
Vol 3 (5) ◽  
pp. 325-336 ◽  
Author(s):  
Jonathan D. Blotter ◽  
Robert L. West
Keyword(s):  
Vector Field ◽  
Power Flow ◽  
Laser Doppler Vibrometer ◽  
Continuous Model ◽  
Laser Doppler ◽  
Scanning Laser ◽  
3 Dimensional ◽  
Sources And Sinks ◽  
Scanning Laser Doppler Vibrometer ◽  
Flow Vector

An experimental spatial power-flow (ESPF) method is presented. This method provides a spatially continuous model of the power-flow vector field derived from experimental measurements. The power-flow vector field clearly indicates locations of energy sources and sinks as well as paths of energy transmission. In the ESPF approach, a scanning laser Doppler vibrometer acquires spatially dense measurements of the vibrating test structure. These measurements are used in solving for a spatially continuous 3-dimensional complex-valued model of the steady-state dynamic response. From this experimentally derived dynamics model, a spatial representation of the power flow is computed.

Identification of pavement material properties using a scanning laser Doppler vibrometer

2016 ◽  
Author(s):  
Navid Hasheminejad ◽  
Cedric Vuye ◽  
Wim Van den Bergh ◽  
Joris Dirckx ◽  
Jari Leysen ◽  
...  
Keyword(s):  
Material Properties ◽  
Laser Doppler Vibrometer ◽  
Laser Doppler ◽  
Scanning Laser ◽  
Scanning Laser Doppler Vibrometer ◽  
Pavement Material

Scanning Laser Doppler Vibrometry of the Middle Ear Ossicles

1997 ◽  
Vol 76 (4) ◽  
pp. 213-222 ◽  
Author(s):  
Geoffrey R. Ball ◽  
Alex Huber ◽  
Richard L. Goode
Keyword(s):  
Middle Ear ◽  
Single Point ◽  
Three Dimensional ◽  
Laser Doppler Vibrometer ◽  
Ossicular Chain ◽  
Laser Doppler ◽  
Scanning Laser ◽  
Scanning Laser Doppler Vibrometer ◽  
Point Analysis ◽  
Ear Ossicles

This paper describes measurements of the vibratory modes of the middle ear ossicles made with a scanning laser Doppler vibrometer. Previous studies of the middle ear ossicles with single-point laser Doppler measurements have raised questions regarding the vibrational modes of the ossicular chain. Single-point analysis methods do not have the ability to measure multiple points on the ossicles and, consequently, have limited ability to simultaneously record relative phase information at these points. Using a Polytec Model PSV-100, detailed measurements of the ossicular chain have been completed in the human temporal bone model. This model, when driven with a middle ear transducer, provides detailed three-dimensional data of the vibrational patterns of the middle ear ossicles. Implications for middle ear implantable devices are discussed.

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