Accession Number : AD0461789


Title :   RECENT ADVANCES IN MECHANICAL IMPEDANCE INSTRUMENTATION AND APPLICATIONS.


Descriptive Note : Summary rept.,


Corporate Author : DAVID TAYLOR MODEL BASIN WASHINGTON DC


Personal Author(s) : Schloss, Fred


Report Date : Feb 1965


Pagination or Media Count : 33


Abstract : This report discusses an automatic impedance measurement system of high precision, results of round robin evaluation of electronics of various mechanical impedance measurement systems, new developments in mechanical impedance instrumentation such as improved vibration generators and a miniature impedance head, and the application of new impedance measurement techniques. These techniques have been applied to the evaluation of dynamic properties of resilient mountings, couplings, damped structures, and damping and viscoelastic materials and to the determination of the internal damping of materials as a function of vibratory stress, added water mass of propellers, and elastic moduli of heterogeneous materials such as fiber-glass. (Author)


Descriptors :   *DAMPING , MECHANICAL WAVES , VIBRATORS(MECHANICAL) , COUPLINGS , VISCOELASTICITY , RESONANCE , MARINE PROPELLERS


Distribution Statement : APPROVED FOR PUBLIC RELEASE