MSCE  Vol.3 No.7 , July 2015
A Comparison between Forming Behaviours of Two Pre-Consolidated Woven Thermoplastic Composites
ABSTRACT

This paper presents the results of an investigation on stretch forming behaviour of two consolidated woven thermoplastic composites: a self-reinforced polypropylene (SRPP) and a glass-fibre reinforced polypropylene (GRPP) composite. A custom-built press with a hemispherical punch was employed to deform composites’ specimens possessing different aspect ratios into an open die. The induced strains on the outer surface of specimens were measured continuously through two high speed, high resolution CCD cameras by employing a Digital Image Correlation (DIC) technique. The strain paths at three different locations on the surface of specimens were compared to elucidate the effect of fibre and matrix on the formability of a woven composite. The fractured surface of specimens was investigated to reveal the effect of fibre mechanical properties on failure morphologies in woven composites. It was found out that the main mode of failure in GRPP is fibre fracture while observed failure morphologies in SRPP were a complex combination of different failure mechanisms. It was revealed that the combination of applied boundary conditions and specimen’s width determines the effective forming mechanisms.


Cite this paper
Zanjani, N. and Kalyanasundaram, S. (2015) A Comparison between Forming Behaviours of Two Pre-Consolidated Woven Thermoplastic Composites. Journal of Materials Science and Chemical Engineering, 3, 180-189. doi: 10.4236/msce.2015.37024.
References
[1]   Kastensson, G.A. (2014) Developing Lightweight Concepts in the Automotive Industry: Taking on the Environmental Challenge with the S?N?tt Project. Journal of Cleaner Production, 66, 337-346. http://dx.doi.org/10.1016/j.jclepro.2013.11.007

[2]   Mayyasa, A., Qattawia, A., Omara, M. and Shana, D. (2012) Design for Sustainability in Automotive Industry: A Comprehensive Review. Renewable and Sustainable Energy Reviews, 16, 1845-1862. http://dx.doi.org/10.1016/j.rser.2012.01.012

[3]   International Council of Clean Transportation (ICCT) (2013) Reducing CO2 and Fuel Consumption from New Cars: Assessing the Near-Term Technology Potential in the EU. http://www.theicct.org

[4]   Reyes, G. and Sharma, U. (2010) Modeling and Damage Repair of Woven Thermoplastic Composites Subjected to Low Velocity Impact. Composite Structures, 92, 523-531. http://dx.doi.org/10.1016/j.compstruct.2009.08.038

[5]   Karakuzua, R., Aslanb, Z. and Okutan, B. (2004) The Effect of Ply Number, Orientation Angle and Bonding Type on Residual Stresses of Woven Steel Fiber Reinforced Thermoplastic Laminated Composite Plates Subjected to Transverse Uniform Load. Composites Science and Technology, 64, 1049-1056. http://dx.doi.org/10.1016/j.compscitech.2003.09.014

[6]   Keeler, S.P. (1990) Automotive Sheet Metal Formability. National Steel Corporation, Product Application Center, Technical Report AU 89-1.

[7]   Tekkaya, A.E. (2000) State-of-the-Art of Simulation of Sheet Metal Forming. Journal of Materials Processing Technology, 103, 14-22. http://dx.doi.org/10.1016/S0924-0136(00)00413-1

[8]   Makinouchi, A. (1996) Sheet Metal Forming Simulation in Industry. Journal of Materials Processing Technology, 60, 19-26. http://dx.doi.org/10.1016/0924-0136(96)02303-5

[9]   Van West, B.P., Byron Pipes, R., Keefe, M. and Advani, S.G. (1991) The Draping and Consolidation of Commingled Fabrics. Composites Manufacturing, 2.

[10]   Badel, P., Gauthier, S., Vidal-Sallé, E. and Boisse, P. (2009) Rate Constitutive Equations for Computational Analyses of Textile Composite. Composites: Part A, 40, 997-1007. http://dx.doi.org/10.1016/j.compositesa.2008.04.015

[11]   Sargent, J., et al. (2010) Benchmark Study of Finite Element Models for Simulating the Thermostamping of Woven- Fabric Reinforced Composites. International Journal of Material Forming, 3, 683-686. http://dx.doi.org/10.1007/s12289-010-0862-5

[12]   Zanjani, N.A. and Kalyanasundaram, S. (2015) Induced Forming Modes in a Self-Reinforced Polypropylene Sheet during Stretch Forming Process at Room Temperature: I-Experimental Studies. Composites Part A, 68, 251-263. http://dx.doi.org/10.1016/j.compositesa.2014.09.023

[13]   Zanjani, N.A., Wang, W. and Kalyanasundaram, S. (2015) The Effect of Fibre Orientation on the Formability and Failure Behaviour of a Woven Self-Reinforced Composite during Stamp Forming. ASME Journal of Manufacturing Science and Engineering, in Press.

[14]   Wang, W., Lowe, A., Davey, S., Zanjani, N.A. and Kalyanasundaram, S. (2015) Establishing a New Forming Limit Curve for a Flax Fibre Reinforced Polypropylene Composite through Stretch Forming Experiments. Composites Part A, in Press. http://dx.doi.org/10.1016/j.compositesa.2015.06.021

[15]   Davey, S., Das, R., Cantwell, W.J. and Kalyanasundaram, S. (2013) Forming Studies of Carbon Fibre Composite Sheets in Dome Forming Processes. Journal of Composite Structures, 97, 310-316. http://dx.doi.org/10.1016/j.compstruct.2012.10.026

[16]   Compston, P., Cantwell, W.J., Cardew-Hall, M.J., Kalyana-sundaram, S. and Mosse, L. (2004) Comparison of Surface Strain for Stamp Formed Aluminium and Aluminium-Propylene Laminate. Journal of Material Science, 39, 6087- 6088. http://dx.doi.org/10.1023/B:JMSC.0000041707.68685.72

[17]   Kalyanasundaram, S., Dhar Malingam, S., Venkatesan, S. and Sexton, A. (2012) Effect of Process Parameters during Forming of Self-Reinforced PP-Based Fibre Metal Laminates. Composite Structures, 97, 332-337. http://dx.doi.org/10.1016/j.compstruct.2012.08.053

[18]   Mosse, L., Compston, P., Cantwell, W.J., Cardew-Hall, M.J. and Kalyanasundaram, S. (2006) Stamp Forming of Polypropylene Based Fibre-Metal Laminates: The Effect of Process Variables on Formability. Journal of Materials Processing Technology, 172, 163-168. http://dx.doi.org/10.1016/j.jmatprotec.2005.09.002

[19]   CV Reinforcement Co. www.ocvreinforcements.com

[20]   Ward, I.M. and Hine, P.J. (2004) The Science and Technology of Hot Compaction. Journal of Polymer, 45, 1413-1427. http://dx.doi.org/10.1016/j.polymer.2003.11.050

[21]   Owens Corning Co http://fiberglassindustries.com

[22]   GOM mbH. www.GOM.com

 
 
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