Impact Analysis of Ergonomic Bicycle Helmet Made from Polymeric Foam Composite Strengthened by Coconut Fiber

Mahadi, A. Syahrul, K. Tugiman

2018

Abstract

This research contains report result manufacture and impacts analysis of bicycle helmet made from polymeric foam composite materials strengthened by coconut fiber. The ergonomic helmets are protective head gears wear by bicycle riders for protection against injury in case of the accident. Helmet standards require helmets to be tested with a simple drop test onto an anvil.The geometric helmet structure consists of shell and liner, both layers have sandwich structure. The shell uses matrix unsaturated Polyester BQTN- 157EX material, chopped strand mat 300 glass fiber reinforce and methyl ethyl ketone peroxide (MEKPO) catalyst with the weight composition of 100gr, 15gr, and 5gr. The liner uses matrix unsaturated Polyester BQTN-157 EX material, coconut fiber reinforces , Polyurethane blowing agent, and MEKPO catalyst with the composition of 33% wt (181,5gr), 10% wt (55gr), 52% wt (285 gr) and 5% wt (27.5 gr). Layers of the helmet made by using hand lay-up method and gravity casting method. Mechanical properties of polymeric foam were the tensile strength (ơt) 0,09MPa, compressive strength (ơc) 0.51 MPa, flexure strength (ơb) 0,52MPa, elasticity modulus (E) 2,76MPa, density (ρ) 140 (kg/m3). Sample model helmet is the most ergonomic with the thickness 10 mm and the amount of air channel 5. Free fall impact test was done in 9 samples with the thickness of 10 mm with the height of 1.5 m. The result of the impact test was maximum impact force (Fi) 381,13N, maximum Impact Stress (ơi) 5,71 MPa and maximum Impact Energy absorption (Ei) 493,41Joule.

Paper Citation

in Harvard Style

Mahadi., Syahrul A. and Tugiman K. (2018). Impact Analysis of Ergonomic Bicycle Helmet Made from Polymeric Foam Composite Strengthened by Coconut Fiber.In Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR, ISBN 978-989-758-449-7, pages 263-266. DOI: 10.5220/0010082802630266

in Bibtex Style

@conference{icosteerr18,
author={Mahadi and A. Syahrul and K. Tugiman},
title={Impact Analysis of Ergonomic Bicycle Helmet Made from Polymeric Foam Composite Strengthened by Coconut Fiber},
booktitle={Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,},
year={2018},
pages={263-266},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010082802630266},
isbn={978-989-758-449-7},
}

in EndNote Style

TY - CONF

JO - Proceedings of the International Conference of Science, Technology, Engineering, Environmental and Ramification Researches - Volume 1: ICOSTEERR,
TI - Impact Analysis of Ergonomic Bicycle Helmet Made from Polymeric Foam Composite Strengthened by Coconut Fiber
SN - 978-989-758-449-7
AU - Mahadi.
AU - Syahrul A.
AU - Tugiman K.
PY - 2018
SP - 263
EP - 266
DO - 10.5220/0010082802630266