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Improved procedures for the laboratory study of high-temperature viscoelastic relaxation

Jackson, Ian; Barnhoorn, Auke; Aizawa, Yoshitaka; Saint, Craig

Description

Several aspects of the experimental procedure used in our laboratory for the study of high-temperature viscoelastic relaxation in geological and ceramic materials have been critically examined and refined. Most importantly, we have newly quantified a contribution to the torsional compliance of the specimen assembly from the interfaces between the metal foil and alumina torsion rod at each end of the specimen. We demonstrate that this extraneous contribution to the apparent compliance of the...[Show more]

dc.contributor.authorJackson, Ian
dc.contributor.authorBarnhoorn, Auke
dc.contributor.authorAizawa, Yoshitaka
dc.contributor.authorSaint, Craig
dc.date.accessioned2015-12-10T22:27:05Z
dc.identifier.issn0031-9201
dc.identifier.urihttp://hdl.handle.net/1885/54045
dc.description.abstractSeveral aspects of the experimental procedure used in our laboratory for the study of high-temperature viscoelastic relaxation in geological and ceramic materials have been critically examined and refined. Most importantly, we have newly quantified a contribution to the torsional compliance of the specimen assembly from the interfaces between the metal foil and alumina torsion rod at each end of the specimen. We demonstrate that this extraneous contribution to the apparent compliance of the specimen can be removed by subtraction of the torsional compliance of a foil-bearing reference assembly similarly containing two alumina-foil interfaces. This new strategy along with other improvements including the modelling of drift in transducer sensitivity, suppression of background creep, minimising the aliasing of high-frequency noise, and allowance for the viscoelastic behaviour of the alumina control specimen, promise more accurate determination of the dispersion and attenuation associated with pronounced high-temperature viscoelastic relaxation. Correction of previously published data for fine-to-medium grained polycrystalline olivine for the interfacial compliance suggests somewhat milder frequency and temperature dependence of Q-1 than previously reported and substantially stronger grain size sensitivity.
dc.publisherElsevier
dc.sourcePhysics of the Earth and Planetary Interiors
dc.subjectKeywords: Ceramic materials; Metal refining; Olivine; Seismic waves; Silicate minerals; Attenuation; Forced-oscillation measurements; High-pressure experimentation; High-temperature viscoelastic relaxation; Shear modulus; Metal foil; high pressure; high temperature Attenuation; Forced-oscillation measurements; High-pressure experimentation; High-temperature viscoelastic relaxation; Seismic wave speeds; Shear modulus
dc.titleImproved procedures for the laboratory study of high-temperature viscoelastic relaxation
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume172
dc.date.issued2009
local.identifier.absfor040407 - Seismology and Seismic Exploration
local.identifier.ariespublicationu9503261xPUB289
local.type.statusPublished Version
local.contributor.affiliationJackson, Ian, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationBarnhoorn, Auke, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationAizawa, Yoshitaka, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationSaint, Craig, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.startpage104
local.bibliographicCitation.lastpage115
local.identifier.doi10.1016/j.pepi.2008.03.010
dc.date.updated2016-02-24T12:01:35Z
local.identifier.scopusID2-s2.0-57349128363
local.identifier.thomsonID000262659600014
CollectionsANU Research Publications

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