Studying Failure Modes of GFRP Laminate Coupon Specimens Using Scanning Electron Microscopy Technique
Publication: Journal of Aerospace Engineering
Volume 31, Issue 6
Abstract
Fiber-reinforced plastics (FRPs), with their unique material and structural properties, offer many advantages over conventional structural materials such as concrete and steel. However, their brittle failure mechanisms at the ultimate stage make them difficult for use in important structural applications. When it comes to glass FRP (GFRP) bridge deck systems, due to the existence of various configurations of structural elements and the nonavailability of acoustic emission (AE) monitoring standards, the need for further exploration of damage identification for the unique configurations adopted in field bridges has become a necessity. The GFRP laminate coupon samples originating from a new FRP-balsa wood composite bridge built in Louisiana were investigated to obtain insight into their structural performance and possibly assess damage mechanisms. In order to assess the critical failure modes in the GFRP laminate samples, three separate sets of specimens were prepared to initiate certain damage mechanisms, and several tests were carried out under varied load conditions to study the critical failure modes such as fiber breakage, matrix cracking, and delamination. Those tested specimens were then examined using the scanning electron microscopy (SEM) technique to identify the failure modes through material changes at the microlevel. Acoustic emission sensors were also installed to collect AE data for further study.
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References
Agarwal, B. D., L. J. Broutman, and K. Chandrashekhara. 2006. Analysis and performance of fiber composites. 3rd Ed. New York: Wiley.
ASCE. 1982. Vol. 1 of Structural plastics design manual. New York: ASCE.
ASTM. 2016. Standard test method for short-beam strength of polymer matrix composite materials and their laminates. ASTM D2344/D2344M. West Conshohocken, PA: ASTM.
ASTM. 2017. Standard test method for tensile properties of polymer matrix composite materials. ASTM D3039/D3039M. West Conshohocken, PA: ASTM.
Barre, S., and M. L. Benzeggagh. 1994. “On the use of acoustic emission to investigate damage mechanisms in glass-fiber-reinforced polypropylene.” Compos. Sci. Technol. 52 (3): 369–376. https://doi.org/10.1016/0266-3538(94)90171-6.
Canal, L. P., J. Segurado, and J. LLorca. 2009. “Failure surface of epoxy-modified fiber-reinforced composites under transverse tension and out-of-plane shear.” Int. J. Solids Struct. 46 (11–12): 2265–2274. https://doi.org/10.1016/j.ijsolstr.2009.01.014.
Crosbie, G. A., F. J. Guild, and M. G. Phillips. 1983. “Acoustic emission studies in glass fibre-polyester composites with rubber toughened matrices.” In Proc., 1st Int. Symp. on Acoustic Emission from Reinforced Composites, 1–7. College Park, MD: AIP Publishing.
Crump, T. N. 1981. “Acceptance criteria for acoustic emission testing of FRP tanks.” In Proc., SPI/CARP Meeting Paper. Reston, VA: ASCE.
Elanchezhian, C., B. V. Ramnath, and J. Hemalatha. 2014. “Mechanical behaviour of glass and carbon fibre reinforced composites at varying strain rates and temperatures.” Procedia Mater. Sci. 6: 1405–1418. https://doi.org/10.1016/j.mspro.2014.07.120.
Genedy, M., S. Daghash, E. Soliman, and M. M. R. Taha. 2015. “Improving fatigue performance of GFRP composite using carbon nanotubes.” Fibers 3 (4): 13–29. https://doi.org/10.3390/fib3010013.
Gooranorimi, O., and A. Nanni. 2017. “GFRP reinforcement in concrete after 15 years of service.” J. Compos. Constr. 21 (5): 04017024. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000806.
Hernandez, D. A., C. A. Soufen, and M. O. Orlandi. 2017. “Carbon fiber reinforced polymer and epoxy adhesive tensile test failure analysis using scanning electron microscopy.” Mater. Res. 20 (4): 951–961. https://doi.org/10.1590/1980-5373-mr-2017-0229.
Jumahat, A., C. Soutis, F. R. Jones, and A. Hodzic. 2010. “Fracture mechanisms and failure analysis of carbon fibre/toughened epoxy composites subjected to compressive loading.” Compos. Struct. 92 (2): 295–305. https://doi.org/10.1016/j.compstruct.2009.08.010.
Kumar, P., K. Chandrashekhara, and A. Nanni. 2004. “Structural performance of a FRP bridge deck.” Constr. Build. Mater. 18 (1): 35–47. https://doi.org/10.1016/S0950-0618(03)00036-9.
Mason, J. J., and D. Valentin. 1989. “Proof testing of unidirectional GFRP using acoustic emission technique.” In Proc., 3rd Int. Symp. on Acoustic Emission from Composite Materials, 200–206. Columbus, OH: Amer Society for Nondestructive.
Mohamed, B., and K. Kalaichelvan. 2016. “Experiment study on the mechanical characterization of glass-basalt fiber reinforced polymer composites.” Int. J. Mater. Sci. Eng. 4 (1): 46–53. https://doi.org/10.17706/ijmse.2016.4.1.46-53.
Nair, A. 2011. “Damage detection and identification in fiber reinforced plastic structural members and field bridges using acoustic emission technique.” Ph.D. dissertation, Civil and Environmental Engineering Dept., Louisiana State Univ.
O’Connor, J. 2013. Composite bridge decking: Final project report.. Washington, DC: Federal Highway Administration.
Wallenberger, F. T., J. C. Watson, and H. Li. 2001. “Glass fibers.” In Vol. 21 of ASM handbook. Geauga County, OH: ASM International.
Zheng, Y., G. Y. Yu, and Y. F. Pan. 2012. “Investigation of ultimate strengths of concrete bridge deck slabs reinforced with GFRP bars.” Constr. Build. Mater. 28 (1): 482–492. https://doi.org/10.1016/j.conbuildmat.2011.09.002.
Zhou, H., L. Mishnaevsky, P. Brøndsted, J. B. Tan, and L. L. Gui. 2010. “SEM in situ laboratory investigations on damage growth in GFRP composite under three-point bending tests.” Chin. Sci. Bull. 55 (12): 1199–1208. https://doi.org/10.1007/s11434-009-0560-1.
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Published In
Journal of Aerospace Engineering
Volume 31 • Issue 6 • November 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jan 25, 2018
Accepted: Apr 17, 2018
Published online: Jul 13, 2018
Published in print: Nov 1, 2018
Discussion open until: Dec 13, 2018
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