Accession Number : ADA332518
Title : Precision Imaging and Measurements for Structural Acoustics
Descriptive Note : Final rept. Jul 94-Sep 97
Corporate Author : GEORGIA INST OF TECH ATLANTA
Personal Author(s) : Berthelot, Yves H.
PDF Url : ADA332518
Report Date : 30 NOV 1997
Pagination or Media Count : 13
Abstract : A fiber optic laser Doppler interferometric system has been designed, built, and tested for measurements (0.5 - 3kHz) of surface vibrations in structural acoustics. The two complex elastic moduli of a voided polymer have been measured as a function of frequency. The measurement errors associated with this new technique are discussed.
Descriptors : *FIBER OPTICS, *INTERFEROMETRY, *SURFACE ACOUSTIC WAVES, VIBRATION, SHEAR MODULUS, VISCOELASTICITY, OPTICAL INTERFEROMETERS, LASER APPLICATIONS, DOPPLER SYSTEMS, ELASTIC WAVES, SECONDARY WAVES, BLOCK POLYMERS, BULK MODULUS, COMPRESSION WAVES.
Subject Categories : Acoustics
Lasers and Masers
Distribution Statement : APPROVED FOR PUBLIC RELEASE