DESIGN AND ANALYSIS OF BICYCLE HELMET MOULDING PROCESS DEVELOPMENT

The use of material like synthetic plastic going through injection moulding arising the health problem and hazard to the operator and the environment. The melting plastic used for injection moulding are hazardous to the operator where the potentials of getting skin burns from contact with the heated barrel or from splattering hot plastic and gases or vapours. Photochemical oxidation contain in the plastic depleting the ozone layer. The aim of the study is to design an open mould suitable for the hand lay-up technique of the Kenaf fiber with epoxy resin adhesion. The analysis of the mould designed by using CAD is to study its mechanical properties such as plasticity. The analysis shown the critical part of the moulding is at its centre where the deformation happened. The mould will return to its original shape when the force applied is removed due to the maximum value for shear and equivalent elastic strain did not reach 0.4 m/m which will cause silicon rubber material to tear and failed.