Constant Temperature Approach for the Assessment of Injection Molding Parameter Influence on the Fatigue Behavior of Short Glass Fiber Reinforced Polyamide 6

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dc.date.accessioned2023-06-16T11:55:26Z
dc.date.available2023-06-16T11:55:26Z
dc.date.issued2021-05-13
dc.identifierdoi:10.17170/kobra-202306168251
dc.identifier.urihttp://hdl.handle.net/123456789/14836
dc.language.isoeng
dc.relation.doidoi:10.3390/polym13101569
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectfatigue testingeng
dc.subjectX-ray microtomographyeng
dc.subjectshort glass fibereng
dc.subjectpolyamide 6eng
dc.subjectinjection moldingeng
dc.subjectself-heatingeng
dc.subjecttesting methodologyeng
dc.subjectdigital volume correlationeng
dc.subject.ddc600
dc.subject.swdSpritzgießenger
dc.subject.swdGlasfaserger
dc.subject.swdPolyamid 6ger
dc.subject.swdVehaltenger
dc.subject.swdMaterialermüdungger
dc.subject.swdTemperaturger
dc.subject.swdTomografieger
dc.titleConstant Temperature Approach for the Assessment of Injection Molding Parameter Influence on the Fatigue Behavior of Short Glass Fiber Reinforced Polyamide 6eng
dc.typeAufsatz
dc.type.versionpublishedVersion
dcterms.abstractShort glass fiber reinforced plastics (SGFRP) offer superior mechanical properties compared to polymers, while still also enabling almost unlimited geometric variations of components at large-scale production. PA6-GF30 represents one of the most used SGFRP for series components, but the impact of injection molding process parameters on the fatigue properties is still insufficiently investigated. In this study, various injection molding parameter configurations were investigated on PA6-GF30. To take the significant frequency dependency into account, tension–tension fatigue tests were performed using multiple amplitude tests, considering surface temperature-adjusted frequency to limit self-heating. The frequency adjustment leads to shorter testing durations as well as up to 20% higher lifetime under fatigue loading. A higher melt temperature and volume flow rate during injection molding lead to an increase of 16% regarding fatigue life. In situ X-ray microtomography analysis revealed that this result was attributed to a stronger fiber alignment with larger fiber lengths in the flow direction. Using digital volume correlation, differences of up to 100% in local strain values at the same stress level for different injection molding process parameters were identified. The results prove that the injection molding parameters have a high influence on the fatigue properties and thus offer a large optimization potential, e.g., with regard to the component design.eng
dcterms.accessRightsopen access
dcterms.creatorMrzljak, Selim
dcterms.creatorDelp, Alexander
dcterms.creatorSchlink, André
dcterms.creatorZarges, Jan-Christoph
dcterms.creatorHülsbusch, Daniel
dcterms.creatorHeim, Hans-Peter
dcterms.creatorWalther, Frank
dcterms.source.articlenumber1569
dcterms.source.identifiereissn:2073-4360
dcterms.source.issueIssue 10
dcterms.source.journalPolymerseng
dcterms.source.volumeVolume 13
kup.iskupfalse

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