Design and Analysis of Bicycle Helmet with Impaxx Foam Liner

Abstract:

Currently, expended polystyrene (EPS) are widely used as liner material in bicycle helmet. Due to its characteristics is excellent performance, lightweight, low cost of manufacturing. However, EPS has some disadvantage as difficulty to optimize energy absorbing in different areas of head and inferior effect of heat dissipation and a brittle characteristic. This study focuses on to find a replacement material for EPS foam to improve liner of bicycle helmet. Impaxx energy absorbing (EA) foams present strong potential in overcoming such problems of EPS foam. To make certain that all bicycle helmets reach efficiency, the helmets are required to pass shock absorption test of EN1078 standard. This study performs finite element analyses of helmet impact tests using LS-DYNA software. Simulation results indicate Impaxx foams are suitable for shock absorption test according to the EN1078 standard. Therefore these results encouraged the authors to extend the manufacturing work to cover the creating helmet design and performance experimental tests.

• Periodical: Advanced Materials Research (Volumes 706-708)
• Pages: 1778-1781
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.706-708.1778
• Online since: June 2013
• Authors: Tso Liang Teng, Cho Chung Liang, Chien Jong Shih, Van Hai Nguyen
• Keywords: Bicycle Helmet, EN1078 Standard, Impact Test, Impaxx Foams, Liner, LS-DYNA

References

[1] N. J. Mills, Design of rigid foam protection in cycle helmets, in: Plastics, Microstructure and Engineering Application, Arnold, Paris (1993), pp.326-336.

[2] D. Hailoua Blanco, A. Cernicchi, U. Galvanetto, FE Modeling of Innovative Helmet Liners, 11th International LS-DYNA Users Conference, Dearborn, Michigan USA, (2010).

[3] F. M. Shuaeib, A. M. S. Hamouda, M. M. Hamdan, R. S. R. Umar, and M. S. J. Hashmi, Motorcycle helmet Part III. Manufacturing issues, Journal of Material Processing Technology, Vol.123 (2002), pp.432-439.

DOI: 10.1016/s0924-0136(02)00046-8

[4] Information on http://msdssearch.dow.com/PublishedLiteratureDOWCOM/dh_030b/0901b8038030b1d4.pdf?filepath=automotive/pdfs/noreg/299-51549.pdf&fromPage=GetDoc

[5] BS EN 1078. Helmets for pedal cyclists and for users of skateboards and roller skates. British Standards Institution, London (2012).

DOI: 10.3403/01057451

[6] T. L. Teng, C. L. Liang, and V. H. Nguyen, Development and Validation of Finite Element Model of Helmet Impact Test, Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials Design and Applications, Vol.227 (2013), pp.82-88.

DOI: 10.1177/1464420712451806

[7] EEVC/WG 17 Report, Improved Test Methods to Evaluate Pedestrian Protection Afforded by Passenger Cars, European Enhanced Vehicle-safety Committee (2002).