Characterization of Anisotropic Properties of Hot Compacted Self-Reinforced Composites (SRCs) via Thermal Diffusivity Measurement

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dc.date.accessioned2024-06-03T09:59:10Z
dc.date.available2024-06-03T09:59:10Z
dc.date.issued2019-11-01
dc.descriptionOriginally published at https://doi.org/10.3139/217.3812eng
dc.identifierdoi:10.17170/kobra-202404119975
dc.identifier.urihttp://hdl.handle.net/123456789/15805
dc.language.isoeng
dc.relation.doidoi:10.3139/217.3812
dc.rightsUrheberrechtlich geschützt
dc.rights.urihttps://rightsstatements.org/page/InC/1.0/
dc.subject.ddc620
dc.subject.ddc660
dc.subject.swdEigenverstärkungger
dc.subject.swdVerbundwerkstoffger
dc.subject.swdTemperaturleitfähigkeitger
dc.subject.swdAnisotropieger
dc.subject.swdMechanische Eigenschaftger
dc.titleCharacterization of Anisotropic Properties of Hot Compacted Self-Reinforced Composites (SRCs) via Thermal Diffusivity Measurementeng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractThe mechanical properties of self-reinforced composites (SRCs) produced in a hot compaction process significantly depend on the process parameters. Only a little deviation of the process temperature or pressure causes the component to act differently under mechanical load. This is a chance and a challenge at the same time, since this process is difficult to handle but by properly controlling the process parameters, the mechanical properties can be adjusted, even locally for one component. In this research SRC are manufactured in a hot compaction process. A correlation between process parameters and density is found. Density increased from 0,8 to 0,91 g/cm³ by increasing temperature and pressure in the hot compaction process. The different thermal properties in the direction of orientation (IP) and transverse to orientation (TP) are measured with a laser flash device. It was found that, due to a change in density and molecular orientation, diffusivity and conductivity are influenced in different degrees in IP and TP directions. For interpretation of thermal measurement results, microstructures are analysed with a confocal laser scanning microscope after preparing the specimen with a permanganate etching. A schematic model of conductive path is worked out and discussed. With measurement data the anisotropy of IP and TP diffusivity is calculated, and a model is built to describe relative density related to anisotropy. The highest anisotropy between IP and TP diffusivity was calculated with a ratio of 6 at a relative density of approximately 0,82 g/cm³. Since mechanical properties in correlation to process parameters have already been investigated, results of this investigation, in combination with previous research on mechanical properties, will enable the development of a non-destructive testing method for SRCs by measuring the thermal diffusivity.eng
dcterms.accessRightsopen access
dcterms.creatorHeim, Hans-Peter
dcterms.creatorMieth, Florian
dcterms.creatorJakob, Fabian Simon
dcterms.creatorSchnau, M.
dcterms.source.identifiereissn:2195-8602
dcterms.source.issueHeft 5
dcterms.source.journalInternational Polymer Processingeng
dcterms.source.pageinfo532-540
dcterms.source.volumeBand 34
kup.iskupfalse

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