Belted Safety Jacket: a new concept in Powered Two-Wheeler passive safety

Powered Two Wheelers (PTWs) offer a viable solution to reduce traffic congestion and promote personal mobility. However, Portugal survey. The concept of a new passive safety device was born: a Belted Safety Jacket (BSJ). An initial assessment of the device vehicle characteristics and conspicuity issues lead to an overrepresentation of PTWs in accident statistics. This work presents an effectiveness for the reduction of riders’ injuries was performed by comparison of the main biomechanical indexes (HIC, Nijmax, innovative approach for concept design of new passive safety devices and their development. The landscape of possible design Chest Deflection and Viscous Criterion) in a relevant accident configuration, reproduced in a virtual environment, with and without solAubtisotnrsacwtas examined with an in-depth analysis of the state of the art and with the use of conceptual design tools. Candidate the device. Later a full factorial Design of Experiment (DOE) was carried out to understand the influence of the device geometrical solutions underwent a feasibility assessment and they were crossed-checked with the rider needs, identified via a specific on-line variables (i.e. possible design parameters) on the biomechanical indexes. The results demonstrated that the integration of BSJ onto surDvueryi.nTghteheciorncoeppetraotfioan,nemwodpeasrnsivaeirscarfaeftyednegviince cwoams pbonrnen: tas BaereltesdubSjaefceteydJatockeintc(rBeaSsJi)n.gAlyn dineimtialndasinsegssompenrattoinfgthceodnedvitiicoens, the vehicle has the potential to significantly reduce the occurrence of serious injuries during a PTW accident versus a car, since it especially the high pressure turbine (HPT) blades. Such conditions cause these parts to undergo different types of time-dependent effectiveness for the reduction of riders’ injuries was performed by comparison of the main biomechanical indexes (HIC, Nijmax, predveegnratsdtahtieocno,notnaectooffwtheicrhidiesrcwreitehpt.hAeompopdoenleunstivneghtihcelef.iTnhiteaenleamlyesnistomfeththeoadcc(FidEeMnt)kwinaesmdaetvicelwopitehdB,iSnJosrudgegretsotsbtehatbtlheetodepvriecdeict Chest Deflection and Viscous Criterion) in a relevant accident configuration, reproduced in a virtual environment, with and without witlhl ebecbreenpefibceihalavalisoourinoafccHidPeTntsblwaditehs.otFhleirghvtehdiactlae tryepceosr.ds (FDR) for a specific aircraft, provided by a commercial aviation the device. Later a full factorial Design of Experiment (DOE) was carried out to understand the influence of the device geometrical company, were used to obtain thermal and mechanical data for three different flight cycles. In order to create the 3D model variables (i.e. possible design parameters) on the biomechanical indexes. The results demonstrated that the integration of BSJ onto needed for the FEM analysis, a HPT blade scrap was scanned, and its chemical composition and material properties were © 2017 The Authors. Published by Elsevier B.V. the vehicle has the potential to significantly reduce the occurrence of serious injuries during a PTW accident versus a car, since it obtained. The data that was gathered was fed into the FEM model and different simulations were run, first with a simplified 3D Peer-review under responsibility of the Scientific Committee of AIAS 2017 International Conference on Stress Analysis. prevents the contact of the rider with the opponent vehicle. The analysis of the accident kinematic with BSJ suggests that the device rectangular block shape, in order to better establish the model, and then with the real 3D mesh obtained from the blade scrap. The will be beneficial also in accidents with other vehicle types. overall expected behaviour in terms of displacement was