TERMOSET MATRİS KOMPOZİTLERDE MİKROPARTİKÜL TAKVİYESİNİN MEKANİK ÖZELLİKLER ÜZERİNDEKİ ETKİSİNİN DENEYSEL VE SAYISAL İNCELENMESİ

Öz

Bu çalışmada, el yatırması yöntemiyle 9 tabakadan üretilen ve matris içerisinde farklı oranlarda SiO₂ ve TiO₂ mikropartikülleri bulunan karbon fiber-epoksi kompozitlerin mekanik özellikleri incelenmiştir. Kompozitlerin katman yönelimleri farklı dizilimlerde karşılaştırılarak optimize edilmiş ve uygun katman yönelimi [0° / +45° / -45° / 90° / 0° / 90° / -45° / +45° / 0°] olarak belirlenmiştir. Deney kapsamında değerlendirilecek numuneler, ASTM-D638 ve ASTM E23 standartlarına uygun olarak üretilmiş ve çekme ile Charpy darbe testlerine tabi tutulmuştur. Kompozit plakalar, kütlece dört farklı mikropartikül oranıyla (0, %1, %2 ve %4) üretilmiştir. Çekme testlerinde, %1 SiO₂-TiO₂ mikropartikülleri içeren kompozitte, mikropartikül içermeyen kompozite kıyasla nihai çekme dayanımında %4,33'lük bir artış gözlemlenmiştir. Testlerden elde edilen çekme ve darbe dayanımı verileri karşılaştırılmış ve sunulmuştur. Bu araştırmanın amacı, SiO₂ ve TiO₂ kombinasyonundan oluşan mikropartiküller farklı oranlarda kompozite eklendiğinde, kompozit malzemenin mekanik özelliklerinde meydana gelen değişimlerin gözlemlenmesi ve araştırılmasıdır. Bu etkilerin araştırılmasında çekme ve Charpy darbe testleri kullanılmıştır.

Anahtar Kelimeler

• Kompozit
• TiO2 nanopartiküller
• SiO2 nanopartiküller
• Mekanik Özellikler
• Termoset Matris

EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE EFFECT OF MICROPARTICLE REINFORCEMENT ON MECHANICAL PROPERTIES IN THERMOSET MATRIX COMPOSITES

Öz

In this study, the mechanical characteristics of carbon fiber-epoxy composites containing different ratios of SiO₂ and TiO₂ microparticles in their matrix, produced from nine sheets by hand lay-up, were investigated. The layer orientations of the composites were compared in different configurations and optimized, and the suitable ply sequence [0° / +45° / -45° / 90° / 0° / 90° / -45° / +45° / 0°] was determined. The specimens evaluated within the scope of the experiment were prepared in accordance with ASTM-D638 and ASTM E23 standards, and tensile and Charpy impact tests were performed. Composite plates were fabricated with four different microparticle ratios by mass (0, 1%, 2%, and 4%). In the tensile tests, the composite containing 1% SiO₂-TiO₂ microparticles was observed to exhibit a 4,33% increase in ultimate tensile strength compared to the composite without microparticles. Tensile strength and impact strength data obtained from the tests were compared and presented. The aim of this research was to investigate the effects of adding SiO₂ and TiO₂ microparticles in various ratios on the mechanical properties of the composites. Tensile and Charpy impact tests were used to evaluate these effects.

Anahtar Kelimeler

• Composite
• TiO2 nanoparticles
• SiO2 nanoparticles
• Mechanical Properties
• Thermoset Matrix

Kaynakça

1. Alptekin A., (2022). Tio2 nano partikül katkılı cam, aramid, karbon hibrit epoksi kompozitlerin mekanik özellikleri.
2. Al-Zubaydi, A.S.J. Salih, R.M. & Al-Dabbagh, B. M. (2021). Effect of nano TiO2 particles on the properties of carbon fiber-epoxy composites. Progress in Rubber Plastics and Recycling Technology, 37(3) 216–232.
3. Dangsheng, X. (2005). Friction and wear properties of UHMWPE composites reinforced with carbon fibers. Mater Lett, 59, 175–179. 7.
4. Han, F. Yan, Y. Ma, J., (2016). Experimental Study and Progressive Failure Analysis of Stitched Foam-core Sandwich Composites Subjected to Low-velocity Impact, Polym. Compos. 39(3), 624–635.
5. Heutling, F. Franz, H. E. & Friedrich K. (1998). Photomicrographic fracture analysis of the delamination propagation in cyclic loaded thermosetting carbon fiber- reinforced composites, Materialwissenschaften und WerkstofStechnik 29, 239 (in German).
6. Irisarri, F., Lasseigne, A., Leroy, F., & Le Riche, R. (2014). Optimal design of laminated composite structures with ply drops using stacking sequence tables. Composite Structures, 559-564.
7. Kandelbauer, P. (2014), InHandbook of Thermoset Plastics, 3rd ed.; Dodiuk, H., Goodman, S. H., Eds.; WilliamAndrew, 739– 753.
8. Kim, B.C. Park, S.W. &Lee, D.G. (2008). Fracture toughness of the nano particle reinforced epoxy composite, Compos. Struct. 86, 69–77.

9. Landowski, M. Strugala, G. & Budzik M. (2017). Impact damage in SiO2 nanoparticle enhanced epoxy – Carbon fibre composites.
10. Molazemhosseini A, Tourani H, Khavandi A, et al. (2013) Tribological performance of PEEK based hybrid composites reinforced with short carbon fibers and nano silica. Wear 303(1–2), 397–404. 8.
11. Muda, M. K. H., & Mustapha, F. (2018). Composite patch repair using natural fiber for aerospace applications, sustainable composites for aerospace applications. Sustainable Composites for Aerospace Applications, 171-209. Woodhead Publishing.
12. Rong Z, Sun W, Xiao H, Jiang G. (2015). Effects of nano-SiO2 particles on the mechanical and microstructural properties of ultra-high performance cementitious composites. Cement and Concrete Composites, 56, 25-31.
13. Seshu kamal, M., Prasad, T., E Nirmala Devi, M. Srinivasa Rao, G. Ramakrishna (2025). Mechanical properties and evaluation of glass fiber reinforced polymer/ Tio2 nano composite laminates.
14. Stoeffler K, Andjelic S, Legros N, et al. (2013). Polyphenylene sulfide (PPS) composites reinforced with recycled carbon fiber. Compos Sci Technol,84, 65–71.
15. Suresha, B. Divya, G.S. Hemanth G.& Somashekar H.M. (2021). Physico-Mechanical Properties of Nano Silica-Filled Epoxy- Based Mono and Hybrid Composites for Structural Applications.
16. Tuncer, C., Canyurt, O.E. (2022). The strength of glass fiber composite materials by inclusion of CaCO3 and SiO2 nanoparticles into resin 2022; Pamukkale Univ Muh Bilim Derg, 28(4), 493-498.
17. Tutunchi A, Kamali R and Kianvash A. (2015). Steel–epoxy composite joints bonded with nano TiO2 reinforced structural acrylic adhesives. J Adhes 91(9), 663–676.
18. Wang, J. Waas, A.M. Wang, H. (2013) Experimental and numerical study on the low velocity impact behavior of foam-core sandwich panels, Compos. Struct. 96 298–311.
19. Wetzel, B. Haupert, F. & Rong M.Z. (2002). Nanoparticle-reinforced composites: preparation, structure, properties, Proc. 81h Natl. Symp. SAMPE, Deutschland e.V., Kaiserslautern (in German).
20. Zhang, M. Zeng, H. Zhang, L. Lin, G. Lii R. K. Y. (1993). Fracture characteristics of discontinuous carbon fibre-reinforced PPS and PES-C composites, Polym. Polym. Compos. 1,357.