Intraply Hibrid Karbon/Aramid Kompozit Malzemelerin Mekanik Özelliklerinin Değerlendirilmesi

Öz

Hibridizasyon, kompoziti oluşturan her bir takviye elemanının en iyi özelliklerini birleştirmek için çok işlevliliğin elde edilmesinde önemli bir uygulamadır. Bu çalışmada, karbon, aramid ve intraply karbon/aramid hibrit kumaşlar kullanılarak iki farklı üretim yöntemiyle (vakum destekli reçine transfer kalıplama yöntemi ve vakum torbalama yöntemi) hibrit kompozitler ve tek tip kompozitlerin mekanik özellikleri analiz edilmiştir. Matris elemanı olarak termoset reçinelerden epoksi reçine kullanılmıştır. Üretilen kompozit numunelerin mekanik (çekme testi, sertlik testi) ve morfolojik olarak analiz edilmesinin yanı sıra, intraply hibrit karbon/aramid kompozitlerin ve interply hibrit karbon ve aramid kompozitlerin üretiminde farklı üretim yöntemlerinin sonuçları nasıl etkilediği incelenmiştir. Sonuçlar, VABM (vakum torbalama yöntemi) ile yapılan üretimlerde, Intraply karbon/aramid hibrit numunelerin çekme dayanımı değerinin VARTM (vakum destekli reçine transfer kalıplama) ile yapılanlara göre 1,56 kat daha iyi olduğunu göstermektedir. Sertlik değerlerinin karşılaştırılmasında VARTM ile üretilen Intraply karbon/aramid hibrit numunelerin değerinde VABM ile yapılanlara göre 1,20 kat daha yüksek sonuçlar elde edilmiştir. Tek eksenli çekme testi sonrasında numunelerde SEM analizi kullanılarak lif kırılması, lif çekmesi ve kırılması gibi ara yüzey özellikleri belirlenmiş ve lif ara yüzeylerinin etkileşimlerinin numunelerin mekanik özelliklerini desteklediği tespit edilmiştir.

Anahtar Kelimeler

• Intraply Hibrit Kompozitler
• Interply Hibrit Kompozitler
• Karbon Elyaf
• Aramid Elyaf
• Mekanik Özellikler

EVALUATION OF MECHANICAL PROPERTIES OF INTRAPLY HYBRID CARBON/ARAMID COMPOSITE MATERIALS

Öz

Hybridization is an important application in obtaining the multi-functionality to combine the best properties of each reinforcing element makes up the composite. In this study, hybrid composites and uniform composites were fabricated using carbon, aramid, and intraply carbon/aramid hybrid weaves with two different production methods (vacuum-assisted resin transfer molding process and vacuum bagging process). The mechanical properties of the produced hybrid composites and uniform composites were analyzed with respect to two different methods. Epoxy resin from thermoset resins was used as a matrix element. The composite samples produced were analyzed mechanically (tensile test, hardness test) and morphologically, as well as in the production of intraply hybrid carbon/aramid composites and interply hybrid Carbon and Kevlar composites, how different production methods affect the results. Results show in the productions made with VABM (vacuum bagging method), the tensile strength value of Intraply carbon/aramid hybrid samples was 1.56 times better than the ones made with VARTM (vacuum assisted resin transfer molding). In the comparison of hardness values, 1.20 times higher results were obtained in the value of Intraply carbon/aramid hybrid samples produced with VARTM compared to those made with
VABM. Using SEM analysis, the interfacial properties such as fiber breakage, fiber shrinkage, and fracture were determined in the specimens after the uniaxial tensile test, and it was found that the interactions of the fiber interfaces support the mechanical properties of the specimens.

Anahtar Kelimeler

• Intraply Hybrid Composites
• Interply Hybrid Composites
• Carbon Fiber
• Aramid Fiber
• Mechanical Properties

Kaynakça

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