The effects of the single filament and the fiber tow test methods on mechanical properties of carbon fibers

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Abstract

The strength of the reinforcing fibers is the main factor affecting the strength of the composites, therefore, accurate method for measuring the strength is needed. There are two methods for determining the strength of the reinforcing fibers (e.g. carbon fiber). They are the methods of single filament and the fiber tow test (fibers impregnated with resin). The main goal of this research is to find the correct procedure of testing carbon fibers with two different methods of single filament and fiber tow test, so comparing the mechanical properties of two types of PAN based carbon fibers given by those methods. The fibers used in this research were two types of carbon fibers and their mechanical properties like tensile strength, tensile modulus, breaking strain and fracture energy were studied in both test methods. The results show that although the single filament test method is quite difficult but compared with the fiber tow test method gives higher values for tensile strength and fracture energy whereas lower value for tensile modulus and breaking strain.

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References

[1] Walsh PJ (2001) Carbon fibers, ASM handbook. Zoltek Corporation. St. Louis.
[2] Morgan P (2005) Carbon fibers and their composites. Taylor & Francis, New York.
[3] Buckley JD, Edie DD (1993) Carbon-Carbon materials and composites. William Andrew Publishing, New York.
[4] Montes-Moran M, Gauthier W, Martinez A, Tascon J (2004) Mechanical properties of high-strength carbon fibers. validation of an end-effect model for describing experimental data. Carbon, 42: 1275–1278.
[5] ISO 11566, Carbon fiber, Determination of the tensile properties of single-filament of specimens.
[6] ASTM D 3379, Standard test method for tensile strength and young’s modulus for high-modulus single-filament materials.
[7] ISO 10618, Carbon fiber, Determination of the tensile properties of resin impregnated yarns.
[8] ASTM D 4018, Standard test methods for properties of continuous filament carbon and graphite fiber tows.
[9] Yu W, Yao J (2006) Tensile strength and its variation of pan-based carbon fibers. I, statistical distribution and volume dependence. J Appl Polym Sci 101(5): 3175–3182.
[10] Yu W, Yao J (2007) Tensile strength and its variation of pan-based carbon fibers. II, calibration of the variation from testing. J Appl Polym Sci 104(4): 2625–2632.
[11] Griffith AA (1921) The Phenomena of Rupture and Flow in Solids. Philos Trans R Soc London, Ser. A 221: 163–198.
[12] Pardini LC, Manhani LGB (2002) Influence of the testing gage length on the strength, young’s modulus and weibull modulus of carbon fibres and glass fibres. Mater Res5(4): 411–420.
[13] Moreton R (1969) The effect of gauge length on the tensile strength of R.A.E. carbon fibres. Fiber Sci Technol 1(4): 273–284.
[14] Barry PW (1987) Experimental data for the longitudinal tensile strength of unidirectional fibrous composites - Part 1: fiber and matrix, Fiber Sci Technol 11(4): 245–255.
[15] Chwastiak S, Barr J, Didchenko R (1979) High strength carbon fibres from mesophase pitch. Carbon 17(1): 49–53.
[16] Westbury MC, Drzal T (1991) J Compos Tech Res 13(1): 22–28.
[17] Donnet JB, Bansal RC (1990) Carbon fibers. 2nd edn., Marcel Dekker, New York.
[18] Tagawa T, Miyata T (1997) Size effect on tensile strength of carbon fibers. Mater Sci and Eng A 238: 336–342.
[19] ISO 11567, Carbon fiber, Determination of filament diameter and cross-sectional area.
[20] ISO 10120, Carbon fiber, Determination of linear density.
[21] ISO 10119, Carbon fiber, Determination of density.
[22] ISO 1889, Reinforcement yarns, Determination of linear density.
[23] ISO 10548, Carbon fiber, Determination of size content.
[24] Morgan P (2005) Carbon fibers and their composites. Taylor & Francis, New York: 85.
[25] Goggin PR, A method of measuring the quality of carbon fibers, AERE R-7790.
Journal of Solid and Fluid Mechanics
Volume 3, Issue 2 - Serial Number 2
September and October 2013
Pages 1-10

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