Flexural Behavior of CFRP Laminate at Elevated Temperature
https://doi.org/10.24017/science.2017.3.26
Abstract views: 1092 / PDF downloads: 859Abstract
A carbon fibre reinforced polymer (CFRP) laminate forms the surface part of an integrally heated tool. It was made up of carbon non-crimp triaxial fibre and SR8100 epoxy in accordance to the stacking sequence of [(0, ±45)/ (90, ±45)] S, using the resin infusion (RI) method. The laminate is heated up to 90ºC when the tool is operated; therefore under-standing the effect of temperature on the flexural properties is quite significant. This experimental study is carried out to investigate the flexural behaviour of the CFRP laminate and finding its flexural properties under the effect of elevated temperatures. For this purpose, various CFRP specim-ens were prepared and tested, using three point bending test method, at different temperature levels from room temperature to 90ºC. The results show that each of the flexural peak load, modulus and strength of the laminate decreases consistently with the increase of temperature. Also the laminate becomes slightly more flexible and significant loss occurs in its flexural modulus when the temperature elevates from 75ºC to 90ºC. The reduction in the flexural behaviour of CFRP is imputed to thermal softening of the epoxy polymer matrix whenever becomes closer to (HDT).
Keywords:
CFRP laminate, flexural modulus, high temperature and flexural test.
References
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[2] G. P. Thomas, "Composite Prepregs - Manufacturing, Benefits and Applications," 2013. [Online]. Available: http://www.azom.com/article.aspx?ArticleID=8353#3, [Accessed: Nov.10, 2016].
[3] S. K. Mazumdar, Composites manufacturing : materials, product, and process engineering,USA: CRC Press, 2001.
https://doi.org/10.1201/9781420041989
[4] I. Petrescu, C. Mohora, and C. Ispas, "The Determination of Young Modulus For CFRP Using Three Point Bending Test at Different Span Lengths," Journal Scientific Bulletin Series D, 75(1), pp. 121-128, 2013.
[5] A. Azzam and W. Li, "An experimental investigation on the three-point bending behavior of composite laminate," in IOP Conference Series: Materials Science and Engineering, pp.12-16, 2014.
https://doi.org/10.1088/1757-899X/62/1/012016
[6] O. Elalaoui, E. Ghorbel, V. Mignot, and M. Ben Ouezdou, "Mechanical and physical properties of epoxy polymer concrete after exposure to temperatures up to 250oC," Construction and Building Materials, 27(1), pp. 415-424, 2012.
https://doi.org/10.1016/j.conbuildmat.2011.07.027
[7] J. Nunes, A. Pouzada, and C. Bernardo, "The use of a three-point support flexural test to predict the stiffness of anisotropic composite plates in bending," Polymer testing, 21(1), pp. 27-33, 2002.
https://doi.org/10.1016/S0142-9418(01)00040-X
[8] J. M. L. d. Reis, "Effect of textile waste on the mechanical properties of polymer concrete," Materials Research, 12(1), pp. 63-67, 2009.
https://doi.org/10.1590/S1516-14392009000100007
[9] I. A. Subagia, Y. Kim, L. D. Tijing, C. S. Kim, and H. K. Shon, "Effect of stacking sequence on the flexural properties of hybrid composites reinforced with carbon and basalt fibers," Composites Part B: Engineering, 58, pp. 251-258, 2014.
https://doi.org/10.1016/j.compositesb.2013.10.027
[10] A. Ongun, A. Avci, S. Picak, and A. Erisen, "Three Point Bending Test Research of Carbon Fibre Composites Incorporating Nanoclay," presented at the Proceedings of The IRES 21st International Conference, 25th December 2015, Amsterdam, Netherland, pp.80-82, 2015.
[11] Y. I. Dimitrienko, "Thermomechanical behaviour of composite materials and structures under high temperatures: 1. Materials," Composites Part A: Applied Science and Manufacturing, 28(5), pp. 453-461, 1997.
https://doi.org/10.1016/S1359-835X(96)00144-3
[12] P. Ciobanu, N. Taranu, S. Popoaei, and D. Banu, "Structural Response of Reinforced Concrete Beams Strengthened in Flexure with near Surface Mounted Fibre Reinforced Polymer Reinforcement Experimental Setup," Journal of Polytechnic Institute of Lasi, 58(4), pp. 109-118, 2012.
[13] H. Shehab EI-Din and H. A. Mohamed, "Effect of temperature on strength of concrete strengthening with CFRP," International Journal of Engineering Science and Innovating Technology, 2(5), 2012.
[14] S. Al-Sheikh and A. Abdallah, "Effect of Elevated Temperature on Flexural Behavior of RC Beams with NSM CFRP," Journal of Civil & Environmental Engineering, 7(1), pp.110-117 2017.
[15] J. Gamage, M. Wong, and R. Al-Mahaidi, "Bond performance of CFRP plated concrete members at elevated temperatures," Australian Structural Engineering Conference, Australia, pp. 934-938, 2005.
[16] J. Reis, "Effect of temperature on the mechanical properties of polymer mortars," Materials Research, 159(4), pp. 645-649, 2012.
https://doi.org/10.1590/S1516-14392012005000091
[17] A. Di Tommaso, U. Neubauer, A. Pantuso, and F. Rostasy, "Behavior of adhesively bonded concrete-CFRP joints at low and high temperatures," Mechanics of Composite Materials, 37(4), pp. 327-338, 2001.
https://doi.org/10.1023/A:1012392703519
[18] E. L. Klamer, D. A. Hordijk, and H. J. Janssen, "The influence of temperature on the debonding of externally bonded CFRP," Special issue of ACI, 23(0), pp. 1551-70, 2005.
[19] L. Resin & Designs, "The Importance of Epoxy Glass Transition Temperature," 2016. [Online]. Available: http://resindesigns.com/2016/05/10/the-importance-of-epoxy-glass-transition-temperature/#top. [Accessed: Sept. 12,2016]
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[21] Sicomin-Composites, "Epoxy resin systems Multi purpose for composites applications," 2013. [Online]. Available: http://www.matrix-composites.co.uk/prod-data-sheet/old/sr-8500-860x-uk.pdf, [Accessed Feb. 06, 2017].
[22] ISO 14125, "Fibre-reinforced plastic composites-determination of flexural properties," European Committee for Standardization1998, [Online]. Available: http://www.iso.org/iso/catalogue_detail.htm?csnumber=23637, [Accessed: May, 05, 2015.
[23] AST D790-07, "Standard Test Methods for Flextural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials," 8 (1), 2007.
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How to Cite
[1]
R. M. Abdalrahman, “Flexural Behavior of CFRP Laminate at Elevated Temperature”, KJAR, vol. 2, no. 3, pp. 330–334, Aug. 2017, doi: 10.24017/science.2017.3.26.
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Published
27-08-2017
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Pure and Applied Science
