Parametric Evaluation of Strength of Fiber/Epoxy Composites

Öz

Fiber/epoxy composites are widely used in engineering structures due to their durability and lightness. How the strength of the material changes in various situations such as the fiber type, the number of layers, the angle it will be subjected to loading, the loading speed is important for the designers to choose the composite material. In this study, a full factorial experimental design was established in the light of these parameters and the cross effects of the parameters on each other were evaluated in terms of failure stress, strain and absorbed energy, and useful results and observations were obtained for designers.

Anahtar Kelimeler

• Fiber/epoxy
• composite material
• material strength

Farklı Parametreler Işığında Fiber Epoksi Tabakalı Kompozitlerin Mukavemet Özelliklerinin Deneysel Olarak Değerlendirilmesi

Öz

Mühendislik yapılarında fiber/epoksi kompozitler dayanıklılık ve hafifliği nedeniyle yaygınca kullanılmaktadır. Tasarımcılar açısından kompozit malzemenin seçimi için fiber tipi, katman sayısı, yüklemeye maruz kalacağı açı, yükleme hızı gibi çeşitli durumlarda malzemenin mukavemetinin nasıl değiştiği önemlidir. Bu çalışmada bu parametreler ışığında tam faktöriyel bir deney tasarımı kurulmuş ve parametrelerin birbirleri üzerindeki çapraz etkileri gerilme, gerinim ve emilen edilen enerji açısından değerlendirilerek tasarımcılar için kullanışlı sonuçlar ve gözlemler elde edilmiştir.

Anahtar Kelimeler

• Fiber/epoksi
• kompozit malzeme
• malzeme mukavemeti
• deneysel çalışma
• experimental study

Kaynakça

1. [1] Tarfaoui M., Choukri S., Neme A., Effect of fibre orientation on mechanical properties of the laminated polymer composites subjected to out-of-plane high strain rate compressive loadings, Compos. Sci. Technol., 68(2), 477-485, 2008.
2. [2] Ekşi S., Genel K., Comparison of Mechanical Properties of Unidirectional and Woven Carbon, Glass and Aramid Fiber Reinforced Epoxy Composites, Acta Phys. Pol. A, 132(3-II), 879-882, 2017.
3. [3] Banakar P., Shivananda H.K., Niranjan H.B., Influence of Fiber Orientation and Thickness on Tensile Properties of Laminated Polymer Composites, Int. J. Pure Appl. Sci. Technol., 9, 2012.
4. [4] Kaleemulla K.M., Siddeswarappa B., Influence of Fiber Orientation on the In-plane Mechanical Properties of Laminated Hybrid Polymer Composites, J. Reinf. Plast. Compos., 29(12), 1900-1914, 2010.
5. [5] Bie B.X., Huang J.Y., Fan D., Sun T., Fezzaa K., Xiao X.H., Qi M.L., Luo S.N., Orientation-dependent tensile deformation and damage of a T700 carbon fiber/epoxy composite: A synchrotron-based study, Carbon, 121, 127-133, 2017.
6. [6] Saad N.A., Hamzah M.S., Hamzah A.F., Numerical and Experimental Investigation for Tensile Properties of Polyphenylene Sulfide Basis Composite Material, J. Babylon Univ., 10, 22, 2014.
7. [7] Wang H.W., Zhou H.W., Gui L.L., Ji H.W., Zhang X.C., Analysis of effect of fiber orientation on Young’s modulus for unidirectional fiber reinforced composites, Compos. Part B Eng., 56, 733-739, Oca. 2014.
8. [8] Zhang Z., Hou S., Mao Y., He L., Han X., Rate-related study on the ply orientation of carbon fiber reinforced epoxy composite laminates, Int. J. Mech. Sci., 1-37, 2020.

9. [9] Zhau X.F., Wagner H.D., Fragmentation of two-Fiber hybrid micro composites: stress concentration factors and interfacial adhesion, Compos. Sci. Technol., 60, 367-377, 2000.
10. [10] Mahdi E., Hamouda A.M.S., Sebaey T.A., The effect of fiber orientation on the energy absorption capability of axially crushed composite tubes, Mater. Des. 1980-2015, 56, 923-928, 2014.
11. [11] Okoli O.I., The efects of strain rate and failure modes on the failure energy of fibre reinforced composites, Compos. Struct., 54, 299-303, 2001.