Interlaminar fracture and crack-healing capability of carbon fiber/epoxy composites toughened with 3D-printed poly-?-caprolactone grid structures

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dc.authorid0000-0002-3204-6746
dc.contributor.authorBeylergil, Bertan
dc.date.accessioned2026-01-24T12:26:34Z
dc.date.available2026-01-24T12:26:34Z
dc.date.issued2022
dc.departmentAlanya Alaaddin Keykubat Üniversitesi
dc.description.abstractIn this study, carbon fiber (CF)/epoxy (EP) composites are toughened with 3D-printed poly-epsilon-caprolactone (PCL) grid structures which are produced by fused deposition modeling at three different areal weight densities and place between dry plain-weave carbon fabrics prior to resin infusion. Three-point bending, Mode-I fracture toughness, interlaminar shear strength (ILSS), and Charpy impact tests are carried out on the prepared composite specimens. The results show that the PCL interlayers can enhance Mode-I fracture toughness up to seven times (693%). The main toughening mechanism is the crack bridging due to the formation of PCL fibrils. It is shown that there is a quadratic relationship between the amount of PCL and Mode-I fracture toughness improvement. The thermal healing efficiencies (eta) for the first and second healing of PCL reinforced composites are determined as 44.1% and 28.2%, respectively. DMA results indicates that the tan delta values are increased almost 10 times with the addition of PCL interlayers. The flexural properties are decreased due to the reduced fiber volume fraction, higher void content, and plasticization effect of PCL interlayers.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [219M076]
dc.description.sponsorshipScientific and Technological Research Council of Turkey, Grant/Award Number: 219M076
dc.identifier.doi10.1002/app.52038
dc.identifier.issn0021-8995
dc.identifier.issn1097-4628
dc.identifier.issue17
dc.identifier.scopus2-s2.0-85121441094
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1002/app.52038
dc.identifier.urihttps://hdl.handle.net/20.500.12868/4760
dc.identifier.volume139
dc.identifier.wosWOS:000731301400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofJournal of Applied Polymer Science
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20260121
dc.subjectblends
dc.subjectcomposites
dc.subjectmechanical properties
dc.subjectsurfaces and interfaces
dc.subjectthermoplastics
dc.titleInterlaminar fracture and crack-healing capability of carbon fiber/epoxy composites toughened with 3D-printed poly-?-caprolactone grid structures
dc.typeArticle

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