A method for determining material damping from driving point measurements

dc.contributor.author Rogers, Jonathan
dc.contributor.department Engineering Science and Mechanics
dc.date 2018-08-17T00:56:52.000
dc.date.accessioned 2020-07-02T06:04:50Z
dc.date.available 2020-07-02T06:04:50Z
dc.date.copyright Wed Jan 01 00:00:00 UTC 1986
dc.date.issued 1986
dc.description.abstract <p>An experimental method for determining material damping from the forced vibration of beam specimens has been developed. In this method, the damping was determined from measurements of the driving force and driving point acceleration. The governing equations of the test system were developed and analyzed so that near optimal system parameters could be selected. Based on the analysis, limiting cases of system parameter selection were considered;Tests using the new method were performed on 2024-T351 aluminum and an aluminum particle filled epoxy. The tests were conducted in atmospheric air and in a reduced pressure environment to observe the effect of air damping. The material damping loss factor was extracted from the test results and compared with results obtained from a different test method for the same materials. The loss factor determined for the aluminum specimen was also compared with the loss factor predicted by the Zener Thermal Relaxation Theory.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/rtd/8112/
dc.identifier.articleid 9111
dc.identifier.contextkey 6329003
dc.identifier.doi https://doi.org/10.31274/rtd-180813-5795
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath rtd/8112
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/81065
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/rtd/8112/r_8627147.pdf|||Sat Jan 15 02:06:49 UTC 2022
dc.subject.disciplines Mechanical Engineering
dc.subject.keywords Engineering science and mechanics
dc.subject.keywords Engineering mechanics
dc.title A method for determining material damping from driving point measurements
dc.type article
dc.type.genre dissertation
dspace.entity.type Publication
thesis.degree.level dissertation
thesis.degree.name Doctor of Philosophy
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