Kösedağ E., Unlu A.
MATERIALPRUEFUNG/MATERIALS TESTING, cilt.1, sa.1, ss.1-10, 2026 (SCI-Expanded, Scopus)
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Yayın Türü:
Makale / Tam Makale
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Cilt numarası:
1
Sayı:
1
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Basım Tarihi:
2026
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Doi Numarası:
10.1515/mt-2026-0058
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Dergi Adı:
MATERIALPRUEFUNG/MATERIALS TESTING
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Derginin Tarandığı İndeksler:
Scopus, Science Citation Index Expanded (SCI-EXPANDED), Compendex
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Sayfa Sayıları:
ss.1-10
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Van Yüzüncü Yıl Üniversitesi Adresli:
Evet
Özet
Abstract
In this study, the effects of graphene and halloysite fillers on the mechanical properties of GFRPC were experimentally investigated. A reference composite unfilled was produced; in addition, six different composites were prepared containing graphene and halloysite at 0.5, 1, 1.5 wt.%. All samples were prepared according to ASTM standards and subjected to tensile and compressive tests in the directions parallel to the fibers (0°) and perpendicular to the fibers (90°), as well as bending tests. In tensile tests, both filler types increased strength in the 0° direction but decreased ductility values. In the 90° direction, graphene filler decreased strength, while 1.5 % halloysite filler provided a limited increase in tensile strength. In compressive tests, both filler types showed improvements, especially in the 90° direction; graphene filler provided the highest increase in strength. In the 0° direction, graphene increased compressive strength, while halloysite addition significantly improved deformation capacity. In bending tests, fillers generally reduced strength; however, graphene filler increased deformation capability, exhibiting more elastic behavior. SEM analyses showed that graphene has a leaf-like and sometimes agglomerated morphology, while halloysite has a tube-like structure and is more homogeneously distributed within the matrix. The findings reveal that the type, ratio, and loading direction of the filler significantly affect the composite performance.