Accession Number : ADA132701

Title :   The Design of a Test Procedure for the Measurement of Acoustic Damping of Materials at Low Stress.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Heidgerken,Ricky A

PDF Url : ADA132701

Report Date : Sep 1983

Pagination or Media Count : 233

Abstract : A procedure for measuring the viscous damping of relatively large plate material (up to 40 inches x 14 inches x 2 inches) was developed utilizing the Hewlett-Packard 5451C Fourier Analyzer and impulse hammer technique under very low stress conditions. Testing environment can be lab air or nondistilled water in the temperature range from 30 deg F to 90 deg. F. The test procedure includes modal analysis that is expandable to other geometric shapes and varied material such as high damping alloys and composites both metallic and non-metallic.

Descriptors :   *ACOUSTIC ATTENUATION, *ACOUSTIC MATERIALS, *ACOUSTIC MEASUREMENT, *TEST METHODS, DAMPING, VISCOSITY, GEOMETRIC FORMS, ALLOYS, NONMETALS, COMPOSITE MATERIALS, LABORATORY PROCEDURES, TEST EQUIPMENT, THESES

Subject Categories : Marine Engineering
      Test Facilities, Equipment and Methods
      Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE