Establishment of a rotary print head to effect residual stresses and interlayer bonding in an FLM-process

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dc.contributor.authorBengfort, Philipp
dc.contributor.authorStracke, Dennis
dc.contributor.authorKünne, Bernd
dc.date.accessioned2021-08-02T11:05:28Z
dc.date.available2021-08-02T11:05:28Z
dc.date.issued2021-07-27
dc.description.abstractn fused layer modeling (FLM) manufacturing technology, there is an increased demand for semi-crystalline materials due to their favorable mechanical properties, such as high strength and toughness. The reasons for their limited use are process-related residual stresses and reduced interlayer bonding, resulting in component distortion, warping and poor strength. Addressing these problems, this paper presents the development and implementation of a rotary print head that enables local laser pre-deposition heating and forced air cooling in the 2.5-dimensional FLM process. Samples of polypropylene are fabricated to investigate the effects of the modified process on residual stresses and interlayer bonding. The investigations show that local laser pre-deposition heating can positively influence the interlayer bonding. In combination with a reduction of the extrusion temperature and additional cooling, it is possible to considerably reduce the residual stresses. The results of this research show that pre-deposition heating and forced air cooling significantly improve the processability of semi-crystalline thermoplastics in the FLM process.en
dc.identifier.urihttp://hdl.handle.net/2003/40359
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22234
dc.language.isoende
dc.relation.ispartofseriesJournal of manufacturing and materials processing;Vol. 5. 2021, 3, art. 82
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectFLMen
dc.subjectFDMen
dc.subjectPre-deposition heatingen
dc.subjectLaseren
dc.subjectRotary print headen
dc.subjectPolypropyleneen
dc.subjectAdditive manufacturingen
dc.subjectResidual stressen
dc.subjectWarpingen
dc.subjectInterlayer bondingen
dc.subject.ddc620
dc.subject.ddc670
dc.subject.rswkFused Deposition Modelingde
dc.subject.rswkLaserde
dc.subject.rswkDruckwerk <Technik>de
dc.subject.rswkPolypropylende
dc.subject.rswkRapid Prototyping <Fertigung>de
dc.subject.rswkMechanische Beanspruchungde
dc.subject.rswkWarpingde
dc.subject.rswkKunststoffklebende
dc.titleEstablishment of a rotary print head to effect residual stresses and interlayer bonding in an FLM-processen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationJournal of manufacturing and materials processing. Vol. 5. 2021, 3, art. 82en
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.3390/jmmp5030082de

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