Material Response Changes due to Varied Loadings in Three Composites

Abstract:

This study presents the details of experimental and analytical investigations on three different types of composites on their progress to failure under varied type of loadings. The composites are glass/epoxy-GFRP, Kevlar/epoxy-KFRP and Carbon/epoxy-CFRP composites. A series of experiments were carried out to find the variation in mechanical properties in all composites due to displacement controlled tests with different displacement rates such as 0.5mm/min, 1.0 mm/min and 1.5mm/min. The experimental results for CFRP, GFRP and KFRP under three different zones of response viz., stage I- response upto design load-DL, stage II-later from design load to ultimate load-UL followed by Stage II-response upto failure load-FL were discussed. Comparisons of relative performance under different rates and types of damage occurred are discussed from strength, stiffness and energy points of view.

• Periodical: Applied Mechanics and Materials (Volumes 813-814)
• Pages: 185-189
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.813-814.185
• Online since: November 2015
• Authors: C. Ganesan, Philip Saratha Joanna, A. Rajaraman, Dalbir Singh
• Keywords: CFRP, Design Load, Displacement Control, GFRP, KFRP, Progressive Failure

References

[1] I.M. Daniel, B.T. Werner and J.S. Fenner, Strain-rate-dependent failure criteria for composites, Composites Science and Technology. 71 (2011) 357–364.

DOI: 10.1016/j.compscitech.2010.11.028

[2] J. L. V. Coelho and J. M. L. Reis, Effects of Strain Rate and Temperature on the Mechanical Properties of Gfrp Composites, Engenharia Térmica (Thermal Engineering). 10 (2011) 03-06.

DOI: 10.5380/reterm.v10i1-2.61945

[3] R. Velmurugan and S. Gurusideswar, Strain Rate Dependent Behavior of Glass/Nano Clay Filled Epoxy Resin Composite, Defence Science Journal. 64 (2014)295-302.

DOI: 10.14429/dsj.64.7331

[4] Y.K. Boey and Y. W Kwon, Progressive damage and failure strength of notched woven fabric composites under axial loading with varying strain rates, Composite Structures. 96 (2013) 824–832.

DOI: 10.1016/j.compstruct.2012.09.035

[5] Y. Chen and S. Ghosh, Micromechanical analysis of strain rate-dependent deformation and failure in composite microstructures under dynamic loading conditions, International Journal of Plasticity. 32(2012) 218–247.

DOI: 10.1016/j.ijplas.2011.10.008

[6] N. Taniguchi, T. Nishiwaki, N. Hirayama, H. Nishida and H. Kawada, Dynamic tensile properties of carbon fiber composite based on thermoplastic epoxy resin loaded in matrix-dominated directions, Composites Science and Technology. 69(2009) 207–213.

DOI: 10.1016/j.compscitech.2008.10.002

[7] J. L. Puente and S. Li, Analysis of strain rate sensitivity of carbon/epoxy woven composites, International Journal of Impact Engineering. 48 (2012) 54-64.

DOI: 10.1016/j.ijimpeng.2011.05.008

[8] ATSB Transport Safety Research Report, Fibre Composite Aircraft – Capability and Safety, Australian Transport Safety Bureau, (2008).

[9] R.O. Ochola, K. Marcus, G.N. Nurick and T. Franz. Mechanical behaviour of glass and carbon fibre reinforced composites at varying strain rates, Composite Structures. 63(2004)455–67.

DOI: 10.1016/s0263-8223(03)00194-6

[10] J.R. Taylor, An Introduction to Error Analysis: The Study of Uncertainties in Physical Measurements, Normal error Integral, University Science Books, (1997) pp.285-289.