Strain dependent damping characteristics of a high damping manganese-copper alloy

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Authors
Dew, Dwight D.
Subjects
Strain dependent material damping
Manganese - Copper alloy
Sonoston
Damping measurement technique
Random excitation
Swept Sine excitation
Advisors
Shin, Y.S.
Date of Issue
1986
Date
September 1986
Publisher
U.S. Naval Postgraduate School
Language
en_US
Abstract
This paper presents the studies on measurement techniques developed for the determination of strain-dependent damping characteristics of materials in an air environment. The material is a high damping manganese-copper alloy called Sonoston. The measurement techniques employ cantilevercd flat beam specimens in bending and cylindrical specimens in torsion. The specimens were subjected to three different heat and aging treatments. Pure random and sinusoidal sweep excitations are used as an excitation source in the frequency range of 20 to 500 Hz. Miniature acceleromcters and strain gages were mounted on the specimens to obtain both input excitation and output responses. The results of the investigation are presented graphically as damping factor vs. resonant frequency, damping factor vs. strain, damping factor vs. input acceleration, strain vs. resonant frequency, strain vs. input acceleration, and input acceleration vs. resonant frequency.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate school
Identifiers
NPS Report Number
Sponsors
Funder
Format
143 p.: ill.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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