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.contributor.authorMrzljak, Selim
dc.contributor.authorDelp, Alexander
dc.contributor.authorSchlink, André
dc.contributor.authorZarges, Jan-Christoph
dc.contributor.authorHülsbusch, Daniel
dc.contributor.authorHeim, Hans-Peter
dc.contributor.authorWalther, Frank
dc.date.accessioned2021-06-11T11:08:19Z
dc.date.available2021-06-11T11:08:19Z
dc.date.issued2021-05-13
dc.description.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.en
dc.identifier.urihttp://hdl.handle.net/2003/40248
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22121
dc.language.isoende
dc.relation.ispartofseriesPolymers;13(10)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectFatigue testingen
dc.subjectX-ray microtomographyen
dc.subjectShort glass fiberen
dc.subjectPolyamide 6en
dc.subjectInjection moldingen
dc.subjectSelf-heatingen
dc.subjectTesting methodologyen
dc.subjectDigital volume correlationen
dc.subject.ddc660
dc.subject.rswkMaterialermüdungde
dc.subject.rswkMikrocomputertomographiede
dc.subject.rswkPolyamid 6de
dc.subject.rswkSpritzgießende
dc.subject.rswkDeformationsmessungde
dc.subject.rswkFaserverstärkter Kunststoffde
dc.subject.rswkPrüftechnikde
dc.titleConstant temperature approach for the assessment of injection molding parameter influence on the fatigue behavior of short glass fiber reinforced polyamide 6en
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationMrzljak, S.; Delp, A.; Schlink, A.; Zarges, J.-C.; Hülsbusch, D.; Heim, H.-P.; Walther, F. Constant Temperature Approach for the Assessment of Injection Molding Parameter Influence on the Fatigue Behavior of Short Glass Fiber Reinforced Polyamide 6. Polymers 2021, 13, 1569.de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.3390/polym13101569de

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