Academic Journal
Stress-adapted fiber orientation along the principal stress directions for continuous fiber-reinforced material extrusion
| العنوان: | Stress-adapted fiber orientation along the principal stress directions for continuous fiber-reinforced material extrusion |
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| المؤلفون: | Heitkamp, Tim, Kuschmitz, Sebastian, Girnth, Simon, Marx, Justin-Dean, Klawitter, Günter (Prof. Dr.-Ing.), Waldt, Nils, Vietor, Thomas (Prof. Dr.-Ing.) |
| بيانات النشر: | Hochschule Hannover |
| سنة النشر: | 2022 |
| المجموعة: | SerWisS - Publication Server of the University of Applied Sciences and Arts Hannover |
| مصطلحات موضوعية: | Extrudieren, ddc:670 |
| الوصف: | A proven method to enhance the mechanical properties of additively manufactured plastic parts is the embedding of continuous fibers. Due to its great flexibility, continuous fiber-reinforced material extrusion allows fiber strands to be deposited along optimized paths. Nevertheless, the fibers have so far been embedded in the parts contour-based or on the basis of regular patterns. The outstanding strength and stiffness properties of the fibers in the longitudinal direction cannot be optimally utilized. Therefore, a method is proposed which allows to embed fibers along the principal stresses into the parts in a load-oriented manner. A G-code is generated from the calculated principal stress trajectories and the part geometry, which also takes into account the specific restrictions of the manufacturing technology used. A distinction is made between fiber paths and the matrix so that the average fiber volume content can be set in a defined way. To determine the mechanical properties, tensile and flexural tests are carried out on specimens consisting of carbon fiber-reinforced polyamide. In order to increase the influence of the principal stress-based fiber orientation, open-hole plates are used for the tensile tests, as this leads to variable stresses across the cross section. In addition, a digital image correlation system is used to determine the deformations during the mechanical tests. It was found that the peak load of the optimized open-hole plates was greater by a factor of 3 and the optimized flexural specimens by a factor of 1.9 than the comparison specimens with unidirectional fiber alignment. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://serwiss.bib.hs-hannover.de/frontdoor/index/index/docId/2406; http://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-24064; https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-24064; https://doi.org/10.25968/opus-2406; https://serwiss.bib.hs-hannover.de/files/2406/heitkamp_etal_2022-fiber_orientation.pdf |
| DOI: | 10.25968/opus-2406 |
| الاتاحة: | https://serwiss.bib.hs-hannover.de/frontdoor/index/index/docId/2406 http://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-24064 https://nbn-resolving.org/urn:nbn:de:bsz:960-opus4-24064 https://doi.org/10.25968/opus-2406 https://serwiss.bib.hs-hannover.de/files/2406/heitkamp_etal_2022-fiber_orientation.pdf |
| Rights: | https://creativecommons.org/licenses/by/4.0/deed.de ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.DEF6F020 |
| قاعدة البيانات: | BASE |
| DOI: | 10.25968/opus-2406 |
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