Modal analysis of musical instruments with holographic interferometry

1991 ◽  
Author(s):  
Thomas D. Rossing ◽  
D. Scott Hampton
Keyword(s):  
Modal Analysis ◽  
Holographic Interferometry ◽  
Musical Instruments

Laser Scanning Vibrometry and Holographic Interferometry Applied to Vibration Study

2015 ◽  
Vol 801 ◽  
pp. 303-311
Author(s):  
Florin Breaban ◽  
Roger Debuchy ◽  
Didier Defer
Keyword(s):  
Nondestructive Testing ◽  
Modal Analysis ◽  
Holographic Interferometry ◽  
Peak Power ◽  
High Performance ◽  
Laser Scanning ◽  
Laser System ◽  
Industrial Control ◽  
Automotive Technology ◽  
Micro Deformation

The applications of high performance materials in the aerospace and in the automotive technology in the next years need to develop new vibration study, nondestructive testing, predictive maintenance and industrial control methods.The Laser Scanning Vibrometry and Holographic Interferometry methods of vibration study and nondestructive testing by modal analysis are described. The Laser Scanning Vibrometer PSV 400 is made by Polytec GmbH and the PSV software reconstructs the 3D model of the measured micro-deformation of the object. The holographic laser system HLS-3 from Lumonics Inc. has 100 MW ruby laser peak power and 30 ns pulse width.Using mechanical excitation to induce a measurable vibration, the Laser Scanning Vibrometry and Holographic Interferometry modal analysis measurements show up the vibrational signatures and the damaged areas of the objects made by high performance materials - polymers, composites.

Modal analysis by holographic interferometry of a turbine blade for aircraft engines

1994 ◽  
Author(s):  
Michele A. Caponero ◽  
Alberto De Angelis ◽  
V. R. Filetti ◽  
S. Gammella
Keyword(s):  
Modal Analysis ◽  
Turbine Blade ◽  
Holographic Interferometry ◽  
Aircraft Engines
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