Latent heat effects in inductive heating of shape memory alloy fibers

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dc.date.accessioned2024-01-08T13:11:57Z
dc.date.available2024-01-08T13:11:57Z
dc.date.issued2023-11-23
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.identifierdoi:10.17170/kobra-202401039314
dc.identifier.urihttp://hdl.handle.net/123456789/15353
dc.language.isoeng
dc.relation.doidoi:10.1002/pamm.202300300
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subject.ddc620
dc.subject.ddc660
dc.subject.swdInduktive Erwärmungger
dc.subject.swdProzessentwicklung <Technik>ger
dc.subject.swdUltrahochfester Betonger
dc.subject.swdMemory-Legierungger
dc.subject.swdFaserger
dc.subject.swdUmwandlungsenthalpieger
dc.titleLatent heat effects in inductive heating of shape memory alloy fiberseng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractMotivation of the present work is an inductive heating process, used in manufacturing a new kind of improved ultra-high performance concrete. In this novel material, fibers made out of shape memory alloys are used to increase the maximum possible fiber volume fraction, or to create an internal state of compressive stress. In contrast to other works, the underlying microstructure transformation from martensite to austenite is highlighted based on thermal analysis. Dynamic scanning calorimetry measurements are adapted as basis for development of a phenomenological phase transformation model. It relates local temperature and temperature rate to the rate of change of the phase indicator, modeling the transformation of martensite to austenite. Latent heat is considered by an enthalpy method, the inductive heating process is considered by a phenomenological model. Study results for a purely thermodynamic process of heating a single fiber embedded in concrete are presented. They show that latent heat effects delay phase transformation and the process of fiber activation is very sensitive to the induced heat. Furthermore, it is discovered that latent heat causes a strongly inhomogeneous state of transformation in radial direction of the fiber, which is of great importance for thermomechanical processes and the interpretation of experimental results.eng
dcterms.accessRightsopen access
dcterms.creatorDescher, Stefan
dcterms.creatorKrooß, Philipp
dcterms.creatorEwald, Felix
dcterms.creatorWolf, Sebastian
dcterms.creatorKuhl, Detlef
dcterms.source.articlenumbere202300300
dcterms.source.identifiereissn:1617-7061
dcterms.source.issueIssue 4
dcterms.source.journalProceedings in Applied Mathematics and Mechanics (PAMM)eng
dcterms.source.volumeVolume 23
kup.iskupfalse

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