Karbon/Kenevir/Polipropilen Hibrit Kompozitlerde Katman Diziliminin Mekanik ve Hasar Davranışına Etkisi

Öz

Bu çalışmada Karbon/Kenevir/Polipropilen dokuma kumaş takviyeli hibrit kompozitlerde katman diziliminin mekanik davranış ve hasar gelişimi üzerindeki etkileri incelenmiştir. Hibrit kompozitlerin özellikleri, atkı ve çözgü yönlerinde gerçekleştirilen 3-nokta eğme ve çentiksiz Charpy darbe testleri ile belirlenmiştir. Eğme testi sonrası kompozit yapılarda oluşan iç hasarların belirlenmesi amacıyla ultrasonik C-tarama analizleri uygulanmıştır. Karbon kumaş katmanlarının dış yüzeylerde yer aldığı dizilimlerde eğme dayanımı ve eğme modülü değerleri artmıştır. Buna karşılık, Kenevir/Polipropilen katmanlarının dış yüzeylerde bulunduğu kompozitlerde ise deformasyonda artış ve daha sünek bir davranış gözlenmiştir. Eğme yükü altında, çekme ve basma gerilmeleri kompozit yapının dış yüzeylerinde oluştuğundan, dış katmanlarda bulunan lif türü eğme dayanımı üzerinde belirleyici bir rol oynamıştır. Ultrasonik analizler, hasar alanlarının katman dizilimine ve atkı/çözgü yönlerinde bulunan lif türlerine bağlı olarak değiştiğini ortaya koymuştur. Bulgular, hibrit dokuma kompozitlerin tasarımında katman diziliminin mekanik performans ve hasar davranışı üzerinde belirleyici bir parametre olduğunu göstermiştir.

Anahtar Kelimeler

• Hibrit kompozitler
• Kenevir lifi
• Karbon lifi
• Katman dizilimi
• Ultrasonik hasar analizi

Effect of Stacking Sequence on the Mechanical and Damage Behavior of Carbon/Hemp/Polypropylene Hybrid Composites

Öz

In this study, the effects of stacking sequence on the mechanical behaviour and damage evolution of Carbon/Hemp/Polypropylene woven fabric reinforced hybrid composites were investigated. The mechanical properties of the hybrid composites were determined by 3-point bending and unnotched Charpy impact tests at the warp and weft directions. Ultrasonic C-scan analyses were performed to characterize the internal damage induced after bending tests. Carbon fabric layers positioned on the outer surfaces exhibited higher flexural strength and flexural modulus values. In contrast, composites with Hemp/Polypropylene layers located at the surfaces demonstrated increased deformation and a more ductile behaviour. Under flexural loads, tensile and compressive stresses are localized at the outer surfaces of the composites in which the fibre type and stacking sequence in the outer layers exert a dominant influence on the flexural strength of the composite structures. Ultrasonic analyses revealed that the extent and distribution of damage areas varied depending on the stacking sequence and the fibre types aligned in the warp and weft directions. It was concluded that stacking sequence is a critical design parameter on the mechanical performance and damage behaviour of hybrid woven composites.

Anahtar Kelimeler

• Hybrid composites
• Hemp fiber
• Carbon fiber
• Stacking sequence
• Ultrasonic damage analysis.

Kaynakça

1. 1. Siouta, L., Apostolopoulou, M. & Bakolas, A. (2024). Natural fibers in composite materials for sustainable building: A state-of-the-art review on treated hemp fibers and hurds in mortars. In Sustainability (Switzerland), 16(23), 10368, 1-26.
2. 2. Meredith, J., Ebsworth, R., Coles, S. R., Wood, B. M. & Kirwan, K. (2012). Natural fibre composite energy absorption structures. Composites Science and Technology, 72(2), 211-217.
3. 3. Silva, F. de A., Filho, R.D.T., Filho, J. de A.M. & Fairbairn, E. de M.R. (2010). Physical and mechanical properties of durable sisal fiber-cement composites. Construction and Building Materials, 24(5), 777-785.
4. 4. Ramesh, M., Palanikumar, K. & Reddy, K.H. (2013). Mechanical property evaluation of sisal-jute-glass fiber reinforced polyester composites. Composites Part B: Engineering, 48, 1-9.
5. 5. Malkapuram, R., Kumar, V., & Singh Negi, Y. (2009). Recent development in natural fiber reinforced polypropylene composites. Journal of Reinforced Plastics and Composites, 28(10), 1169-1189.
6. 6. Wambua, P., Ivens, J. & Verpoest, I. (2003). Natural fibres: Can they replace glass in fibre reinforced plastics? Composites Science and Technology, 63(9), 1259-1264.
7. 7. Li, X., Tabil, L.G., Panigrahi, S. & Crerar, W.J. (2013). The Influence of Fiber Content on Properties of Injection Molded Flax Fiber-HDPE Biocomposites. The Canadian Society for Bioengineering, 1-10.
8. 8. Ku, H., Wang, H., Pattarachaiyakoop, N. & Trada, M. (2011). A review on the tensile properties of natural fiber reinforced polymer composites. Composites Part B: Engineering, 42(4), 856-873.

9. 9. Mohanty, A.K., Misra, M. & Drzal, L.T. (2002). Sustainable Bio-Composites from renewable resources: Opportunities and challenges in the green materials world. Journal of Polymers and the Environment, 10(1-2), 19-26.
10. 10. Pickering, K.L., Efendy, M.G.A. & Le, T.M. (2016). A review of recent developments in natural fibre composites and their mechanical performance. In Composites Part A: Applied Science and Manufacturing, 83, 98-112.
11. 11. Hegde, S., Satish Shenoy, B. & Chethan, K.N. (2019). Review on carbon fiber reinforced polymer (CFRP) and their mechanical performance. Materials Today: Proceedings, 19, 658-662.
12. 12. Mohammed, L., Ansari, M.N.M., Pua, G., Jawaid, M. & Islam, M.S. (2015). A Review on Natural Fiber Reinforced Polymer Composite and Its Applications. In International Journal of Polymer Science, 1-15.
13. 13. Boccarusso, L., Pinto, F., Myronidis, K., De Fazio, D. & Durante, M. (2023). Thin hybrid hemp/carbon fiber composites: Manufacturing, flexural, and impact behavior. Journal of Materials Engineering and Performance, 32(9), 3914-3922.
14. 14. Pinto, F., Boccarusso, L., De Fazio, D., Cuomo, S., Durante, M. & Meo, M. (2020). Carbon/hemp bio-hybrid composites: Effects of the stacking sequence on flexural, damping and impact properties. Composite Structures, 242, 1-16.
15. 15. Ahmad, M.A.A., Majid, M.S.A., Ridzuan, M.J.M., Firdaus, A.Z.A. & Amin, N.A.M. (2017). Tensile properties of interwoven hemp/PET (Polyethylene Terephthalate) epoxy hybrid composites. Journal of Physics: Conference Series, 908(1), 1-6.
16. 16. Ramesh, M., Palanikumar, K. & Hemachandra Reddy, K. (2016). Evaluation of Mechanical and Interfacial Properties of Sisal/Jute/Glass Hybrid Fiber Reinforced Polymer Composites. Transactions of the Indian Institute of Metals, 69(10), Technical Paper 1-9.
17. 17. Gujjala, R., Ojha, S., Acharya, S.K. & Pal, S.K. (2014). Mechanical properties of woven jute-glass hybrid-reinforced epoxy composite. Journal of Composite Materials, 48(28), 1-12.
18. 18. Doba Kadem, F. ve Özdemir, G. (2023). Sürdürülebilir tekstil liflerinden dokunmuş dijital baskılı kumaşların dikilebilirlik performansı üzerine deneysel bir çalışma. Çukurova Üniversitesi Mühendislik Fakültesi Dergisi, 38(2), 433-440.
19. 19. Palabıyık, İ., Körlü, A. ve Özçelik Kayseri, G. (2024). Kenevir içeren denim giysilerin terbiyesinde çevre dostu bir yöntem: ozon ile yıkama. Çukurova Üniversitesi Mühendislik Fakültesi Dergisi, 39(4), 881-895.
20. 20. Bhoopathi, R., Ramesh, M., Naveen Kumar, M., Sanjay Balaji, P. & Sasikala, G. (2018). Studies on mechanical strengths of hemp-glass fibre reinforced epoxy composites. IOP Conference Series: Materials Science and Engineering, 402(1), 1-8.
21. 21. Neves, A.C.C., Rohen, L.A., Mantovani, D.P., Carvalho, J.P.R.G., Vieira, C.M.F., Lopes, F.P.D., Simonassi, N.T., Luz, F.S.D. & Monteiro, S.N. (2020). Comparative mechanical properties between biocomposites of Epoxy and polyester matrices reinforced by hemp fiber. Journal of Materials Research and Technology, 9(2), 1-9.
22. 22. Rouison, D., Sain, M. & Couturier, M. (2006). Resin transfer molding of hemp fiber composites: Optimization of the process and mechanical properties of the materials. Composites Science and Technology, 66(7-8), 895-906.
23. 23. Ochi, S. (2006). Development of high strength biodegradable composites using Manila hemp fiber and starch-based biodegradable resin. Composites Part A: Applied Science and Manufacturing, 37(11), 1879-1883.
24. 24. Mohanavel, V., Sathish, T., Ravichandran, M., Ganeshan, P., Kumar, M.M.R. & Subbiah, R. (2021). Experimental investigations on mechanical properties of cotton/hemp fiber reinforced epoxy resin hybrid composites. Journal of Physics: Conference Series, 2027(1), 1-11.
25. 25. Pulleti, S.S. & Singh, S.B. (2024). Development and characterization of hemp/carbon and hemp/glass hybrid and novel functionally graded hybrid composites for structural applications. Polymer Composites, 45(12), 11178-11199.
26. 26. De Fazio, D., Cuomo, S., Boccarusso, L., Pinto, F., Durante, M. & Meo, M. (2019). Design and characterization of hybrid hemp/carbon laminates with improved impact resistance. Materials Today: Proceedings, 34, 194-201.
27. 27. Karaçor, B. & Özcanlı, M. (2021). Effect of various matrix materials on mechanical properties of basalt/jute/glass fiber reinforced hybrid composites. Çukurova Üniversitesi Mühendislik Fakültesi Dergisi, 36(4), 941-954.