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

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1993
Accession Number
ADA275379

Entities

People

  • Layton E. Gilroy

Organizations

  • Defence Research and Development Canada

Tags

DTIC Thesaurus Topics

  • Acoustics
  • Bodies
  • Computers
  • Contracts
  • Experimental Data
  • Frequency
  • Geometric Forms
  • Hydrophones
  • Measurement
  • National Security
  • Noise
  • Radiated Noise
  • Resonant Frequency
  • Ring Stiffened Cylinders
  • Security
  • Stiffened Cylinders
  • Validation

Readers

  • Acoustics.
  • Computer Science.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering