Accession Number : AD0609182

Title :   MOBILITY AND SOUND RADIATION MEASUREMENTS ON A CYLINDRICAL GLASS-REINFORCED-PLASTIC MODEL,

Corporate Author : DAVID TAYLOR MODEL BASIN WASHINGTON D C

Personal Author(s) : Ludwig,Dwight L. ; Noonan,Christopher J.

Report Date : NOV 1964

Pagination or Media Count : 40

Abstract : Vibration and sound radiation characteristics are determined for a 6-in. ID, 28-in. long, internally ring-stiffened, glass-reinforced-plastic cylinder in the frequency range of 200 to 5300 cps. Drive-point mobility, an estimate of damping ratio, the mode shapes of resonant frequencies, and the sound pressure directivity patterns at resonances are presented. (Author)

Descriptors :   (*LAMINATED PLASTICS, GLASS TEXTILES), (*STIFFENED CYLINDERS, ACOUSTIC PROPERTIES), (*VIBRATION, STIFFENED CYLINDERS), (*COMPOSITE MATERIALS, LAMINATED PLASTICS), (*REINFORCING MATERIALS, GLASS TEXTILES), GLASS TEXTILES, CYLINDRICAL BODIES, SHELLS(STRUCTURAL FORMS), DAMPING, RESONANCE, ACOUSTIC SIGNALS, PRESSURE, ACCELERATION, UNDERWATER, MODEL TESTS, SUBMARINE HULLS

Distribution Statement : APPROVED FOR PUBLIC RELEASE