Accession Number:

ADA275379

Title:

Natural Frequency and Radiated Noise Measurements on a Ring-Stiffened Cylinder. Experimental Data Annex

Descriptive Note:

Technical communication rept.

Corporate Author:

DEFENCE RESEARCH ESTABLISHMENT ATLANTIC DARTMOUTH (NOVA SCOTIA)

Personal Author(s):

Report Date:

1993-12-01

Pagination or Media Count:

39.0

Abstract:

Defence Research Establishment Atlantic DREA has conducted an experiment involving the measurement of radiated noise from a ring-stiffened cylinder subjected to a harmonic load. This experiment was performed to provide validation data for structural acoustics computer codes being developed in-house and under contract. The experiment was in two parts. The first involved determining the natural frequencies of the cylinder in air, while the second stage of testing involved determining the natural frequencies of the cylinder while it was submerged and measuring directivity patterns of radiated noise when the submerged cylinder was excited at some of its natural frequencies. This report contains all the directivity patterns produced in the trials, as well as listings of the measured natural frequencies, both in-air and submerged and, as such serves as an annex to an earlier report describing the experiment.

Subject Categories:

  • Acoustic Detection and Detectors
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE