Narmashiri, K. and Jumaat, Mohd Zamin and Sulong, N.H.R. (2011) Failure modes of CFRP flexural strengthened steel I-beams. In: 8th International Conference on Composite Science and Technology, ICCST8, 2011, Kuala Lumpur.
Full text not available from this repository.Abstract
This paper presents the experimental and numerical studies on the flexural strengthened steel I-beams by using Carbon Fiber Reinforced Polymer (CFRP) strips. Nowadays, strengthening existing steel structures by using CFRP has been widely interested. One of the common usages of CFRP to strengthen steel beams is the flexural upgrading. In this case, CFRP strips are pasted on the tensile flange to improve flexural behaviors. The problems that are frequently reported for CFRP strengthened steel beams are the debonding, delaminating (peeling), and splitting. Identification these failure modes are essential to provide an appropriate level of safety for strengthened steel beams. To investigate the CFRP failure modes, four strengthened steel I-beams were chosen. The CFRP plates with different thicknesses in single and double (splice) layers were used. Both experimental test (four-points bending test) and numerical simulation (full 3D simulation with ANSYS) were employed. The incremental loading was applied until failure while deformations in the critical regions were recorded. The results reveal that for the CFRP flexural strengthened steel beams the following failure modes occurred: (a) debonding at the CFRP plate tips, (b) debonding below point loads, (c) delaminating at the ends of CFRP plate, and (d) splitting below point loads. The sequence of failure modes depended on the specifications of CFRP plate. Some recommendations are provided to overcome/retard these failures.
| Item Type: | Conference or Workshop Item (Paper) |
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| Funders: | UNSPECIFIED |
| Additional Information: | Conference code: 84301 Cited By (since 1996): 1 Export Date: 6 January 2013 Source: Scopus CODEN: KEMAE doi: 10.4028/www.scientific.net/KEM.471-472.590 Language of Original Document: English Correspondence Address: Narmashiri, K.; Civil Engineering Department, Faculty of Engineering, Islamic Azad University, Zahedan, Iran; email: narmashiri@siswa.um.edu.my References: Hollaway, L.C., Zhang, L., Photiou, N.K., Teng, J.G., Zhang, S.S., (2006) Adv. Struct. Eng., 9, p. 791; Buyukozturk, O., Gunes, O., Karaca, E., (2004) Const. Build. Mater., 18, p. 9; Chiew, S.P., Lie, S.T., Lee, C.K., Yu, Y., Fourth International Conference on Advances in Steel Structures, Shanghai (2005); Schnerch, D., Stanford, K., Sumner, E., Rizkalla, S., (2005) International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005); Al-Emrani, M., Linghoff, D., Kliger, R., (2005) International Symposium on Bond Behaviour of FRP in Structures (BBFS 2005); Lenwari, A., Thepchatri, T., Albrecht, P., (2005) J. Compos. for Const., 9, p. 296; Schnerch, D., Dawood, M., Rizkalla, S., Sumner, E., Stanford, K., (2006) Adv. Struct. Eng., 9, p. 805; Al-Emrani, M., Kliger, R., (2006) Adv. Struct. Eng., 9, p. 819; Lenwari, A., Thepchatri, T., Albrecht, P., (2006) J. Compos. for Const., 10, p. 69; Haghani, R., Al-Emrani, M., Kliger, R., Asia-Pacific Conference on FRP in Structures (APFIS 2007), HongKong, China (2007); Benachour, A., Benyoucefa, S., Tounsi, A., Bedia, E.A.A., (2008) Engn. Struct., 30, p. 3305; Narmashiri, K., Jumaat, M.Z., (2011) Simul. Model. Pract. Theory, 19, p. 564; Narmashiri, K., Jumaat, M.Z., Ramli Sulong, N.H., (2010) Int. J. Phys. Sci., 5, p. 1360; Narmashiri, K., Jumaat, M.Z., Ramli Sulong, N.H., (2010) Sci. Res. Essays, 5, p. 2155; Narmashiri, K., Jumaat, M.Z., Ramli Sulong, N.H., (2011) Adv. Mater. Res., 163-167, p. 3838; Haghani, R., Al-Emrani, M., Kliger, R., (2009) Const. Build. Mater., 23, p. 1413; Deng, J., Lee, M.M.K., Moy, S.S.J., (2004) Compos. Struct., 65, p. 205; Deng, J., Lee, M.M.K., (2007) Compos. Struct., 78, p. 232; Deng, J., Lee, M.M.K., (2007) Compos. Struct., 78, p. 222; Rizkalla, S., Dawood, M., (2006) Developments in Composites: Advanced, Infrastructural, Natural and Nano-compsoites, , Sydney, Australia |
| Uncontrolled Keywords: | Carbon Fiber Reinforced Polymer (CFRP), Failure modes, I-beam, Steel, Strengthening, 3D simulations, Carbon fiber reinforced polymer, CFRP plates, Critical region, Experimental test, Flexural behavior, I beams, Level of safeties, Numerical simulation, Numerical studies, Point load, Steel beams, Carbon fiber reinforced plastics, Debonding, Fiber reinforced plastics, Plates (structural components), Polymers, Reinforced plastics, Steel beams and girders, Strengthening (metal), Three dimensional computer graphics, Carbon fibers. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering |
| Depositing User: | Mr Jenal S |
| Date Deposited: | 06 May 2013 01:35 |
| Last Modified: | 10 Feb 2020 08:29 |
| URI: | http://eprints.um.edu.my/id/eprint/5948 |
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