Effect of Cyclic Loading Frequency on Flexural Modulus of GFRP Laminates with Resin Rich Intermediate Layers

Abstract:

The flexural modulus of composite laminates subjected to cyclic loads of varying cycle periods are experimentally investigated in this work. GFRP composite laminate specimen of configuration 0/R/0/0/0, 0/R/30/60/0, 0/R/90/90/0 and 0/R/45/-45/0 are prepared by hand lay-up technique with a uniquely processed resin-rich intermediate layer for the testing. Specimens are exposed to constant amplitude cyclic loading of frequencies 4.6 Hz and 8.6 Hz. A cantilever configuration of specimen with cyclic tip loading is considered to simulate the conditions of a leaf of a laminated automobile leaf spring. The flexural response of the laminate is measured using three point bend test as per ASTM D 790 and damping by hysteresis loop. The observed reduction in flexural modulusand the increase in damping factor after loading are compared with virgin. Minimised flexural modulus deviations between the loading frequencies are favoured by the cushioning of resin rich intermediate layer in the lay-up.

• Periodical: Applied Mechanics and Materials (Volume 787)
• Pages: 543-547
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.787.543
• Online since: August 2015
• Authors: T.G. Loganathan*, R. Krishna Murthy, Chandrasekaran Kesavan
• Keywords: Cyclic Loading, Damping Factor, Flexural Modulus, GFRP, Loading Frequency, Resin-Rich Intermediate Layer

References

[1] J. Wang, B. L. Karihaloo, Matrix induced delamination in composite laminate under transverse loading, Compos. Struct. 38 (1997) 661-666.

DOI: 10.1016/s0263-8223(97)00103-7

[2] Andreas Gael, Dirk Lange, Karl Schulte, On the relation between matrix crack densities, stiffness degradation, and surface temperature distribution of tensile fatigue loaded glass-fibre non crimp- fabric reinforced epoxy, Compos. Struct. 37 (2006).

DOI: 10.1016/j.compositesa.2005.03.028

[3] Jacques Renard, Alain Thionnet, Damage in composites: From physical mechanism to modelling, Comp. Sci. Tech. 66 (2006) 642-646.

DOI: 10.1016/j.compscitech.2005.07.035

[4] Tong Yuanjian, D.H. Isaac, Combined impact and fatigue of glass reinforced composites, Composites: Part B. 39 (2008) 505-512.

DOI: 10.1016/j.compositesb.2007.03.005

[5] B. Pradhan, N. Venukumar, N.S. Rao, Stiffness degradation resulting from 900 ply cracking in angle ply composite laminate, Comp. Sci. Tech. 59 (1999) 1543-1552.

DOI: 10.1016/s0266-3538(99)00021-4

[6] Tomohiro Yokozeki, Takahira Aoki, Toshio Ogasawara, Takashi Ishikawa, Effect of layup angle and ply thickness on matrix crack interaction in contiguous plies of composite laminates, Composites: Part A. 36 (2005) 1229-1235.

DOI: 10.1016/j.compositesa.2005.02.002

[7] J.M.M. de Kok, H.E.H. Meijer, Deformation, yield and fracture of unidirectional composites in transverse loading 1. Influence of fibre volume fraction and test temperature, Composites: Part A. 30(1999) 905-916.

DOI: 10.1016/s1359-835x(98)00170-5

[8] Raif Sakin, Irfan Ay, Ramazan Yaman, An investigation of bending fatigue behaviour for glass- fiber reinforced polyester composite materials, Mater. Des. 29 (2008) 212-217.

DOI: 10.1016/j.matdes.2006.11.006

[9] Jean- Marie Berthelot and Youssef Sefrani. Longitudinal and transverse damping of unidirectional fibre composites, Compos. Struct. 79 (2007) 423-431.

DOI: 10.1016/j.compstruct.2006.02.006

[10] R. Chandra, S.P. Singh and K. Gupta, Damping Studies in Fibre- reinforced composite- a review, Compos. Struct . 46 (1999) 41-51.

[11] Jong Hee Yim, Shee Yong Cho, Yun Jong Seo, Bor. Z. Jang, A study on material damping of 00 laminated composite cantilever beams with a viscoelastic layer, Compos. Struct. 60(2003) 367-374.

DOI: 10.1016/s0263-8223(03)00051-5

[12] M. Idriss, A. El Mahi, M. Assarar, R. El Gurejouma, Damping analysis in cyclic fatigue loading of sandwich beams with debonding, Composite : part B. 44 (2013) 597-603.

DOI: 10.1016/j.compositesb.2012.02.024

[13] Z. Zhang and G. Hartwig, Relation of damping and fatigue of unidirectional fibre composite, Int. J. Fatigue 24 (2002) 713-718.

DOI: 10.1016/s0142-1123(01)00206-7

[14] Jia-Lin Tsai and Nai-Ren Chang, 2D analytical model for characterizing flexural damping responses of composite laminates, Compos. Struct. 89 (2009) 443-447.

DOI: 10.1016/j.compstruct.2008.09.003

[15] M. Naderi and M.M. Khonsari, On the role of damage energy in the fatigue degradation characterization of composite laminate, Composites: Part B. 45(2013) 528-537.

DOI: 10.1016/j.compositesb.2012.07.028