Investigating fiber-polymer adhesion within a reinforced photopolymerized matrix.

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.advisorNiyagama, Gamage
dc.contributor.advisorWudith, Woranga
dc.contributor.authorNasir, Ahmed
dc.contributor.schoolInsinööritieteiden korkeakoulufi
dc.contributor.supervisorPartanen, Jouni
dc.date.accessioned2024-08-25T17:23:58Z
dc.date.available2024-08-25T17:23:58Z
dc.date.issued2024-08-19
dc.description.abstractFiber Reinforced Plastics are materials of interest in the 21st century due to their light weight and strength, which makes them a great alternative to replace metals in machines of interest such as automotives, airplanes and in marine applications. Though there are many methods of producing FRPs, creating them using additive manufacturing technology is essential for the proper propagation of these materials. This will allow small and middle industries to also adopt these materials which will in the long run lead to industry-wide adoption. This idea is not new, as FRP products have been developed widely using FDM or Material Extrusion Technologies, however, introducing new manufacturing technologies to accomplish this will help make the market competitive, and the printers affordable. In this research study, the ability of photopolymerizing 3D printers to create fiber-reinforced samples was studied, and a procedure to achieve acceptable results was drafted. Throughout the experimentation, fiber wetting and matrix infiltration were persistent issues that were partially fixed by utilizing a few different approaches, each aimed at removing the outer polymer layer of the reinforcing fiber. These preprocessing techniques, though overall effective, had problems with consistency as removing the polymer layer meant that a single fiber tow devolved into numerous individual strands which performed differently to how an integrated tow would have and broke and slipped independently. A new research direction was, therefore, identified relating to fiber wettability in photopolymerizing printers. Despite the inconsistency, the results reached in this study show that a single embedded carbon fiber can support loads up to 160 N (provided that 3.25 cm of embedment is allowed) without breaking. The minimum embedded length of about 1.1 cm was also discovered to allow enough adhesion, such that the fiber broke. Relationships between the embedded length of the fiber with its adhesion and with fiber snapping were also established and the reasons behind the fiber breaking and slipping were also discussed. This study led to the conclusion that FRPs can be created while using photopolymerizing printers and this study can serve as a benchmark and groundwork for future studies in this area of research.en
dc.format.extent84
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/130205
dc.identifier.urnURN:NBN:fi:aalto-202408255766
dc.language.isoenen
dc.programmeMaster's Programme in Mechanical Engineering (MEC)fi
dc.subject.keywordadditive manufacturingen
dc.subject.keyword3D printingen
dc.subject.keywordphotopolymerizationen
dc.subject.keywordfiber wettingen
dc.subject.keywordfiber reinforced plasticsen
dc.subject.keywordfiber-matrix adhesion and contact
dc.titleInvestigating fiber-polymer adhesion within a reinforced photopolymerized matrix.en
dc.typeG2 Pro gradu, diplomityöfi
dc.type.ontasotMaster's thesisen
dc.type.ontasotDiplomityöfi
local.aalto.electroniconlyyes
local.aalto.openaccessyes
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