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Title:	Crashworthiness evaluation of reusable end-of-life side impact bar for automotive
Authors:	Ahmed Aboubakr Ahmed Alashlam (P44082)
Supervisor:	Dzuraidah Abd Wahab, Prof. Dr.
Keywords:	Component Reusability Automobile-related wastes
Issue Date:	3-Mar-2018
Description:	End-of-life recoveries of automotive components are now gaining importance in the automotive industry in view of its adverse impact to the environment. Incorporating the idea of component reuse at the product design stage is necessary to ensure an effective recovery of the components at the end of its useful life. However, ensuring reusability and reliability of End-of-life Vehicle (ELV) components is a very challenging task since the components are expected to perform its function 'as new' in their next life cycle. The main objective of this study is to assess the reusability and reliability of a reusable automotive component with a particular focus on side impact safety beam. Therefore, the optimum design of a vehicle side door safety beam was proposed and analysed. To achieve this, finite element simulations were performed on four proposed safety beam geometries of low carbon steel, namely; Tube-beam, I-beam, II-beam and W-beam using Pam CrashR software to determine an optimum design for the safety beam. Different masses of impactor were used in the impact mass simulations which are 10kg, 20kg, 30kg, 40kg, and 50kg with an impact speed of 36km/h, the effect of different impact mass on the simulation was predicted using artificial neural network (ANN) model. Crashworthiness is characterised by non-deterministic processes where repeated collision tests on the same vehicle type will always lead to different results. Incorporating the third and fourth statistical moments, crashworthiness of a population of 10,000 beam components with four different geometries in crash event was predicted using the stochastic crash simulation approach. Validation of the computational analysis was then performed by conducting physical component experimental test according to the requirements of the Federal Motor Vehicle Safety Standard. The results of both simulation and experimental test indicate that W-beam have the best capability of energy absorption within the range of 250J to 1400J when subjected to impact mass between 10kg to 50kg. This is followed by II-beam with the range of 120J to 1200J. The simulation results also show that the range of 180J to 820J is observed for Tube-beam for the similar impact mass thus putting this geometry design as the weakest in terms of energy absorption. The results also show that while W-beam absorbed the most energy, it also maintained a minimal displacement between 2.48mm to 22.87mm when subjected to impact mass between 10kg to 50kg. Apart from random crashworthiness variables, natural degradation also needs to be considered in reliability prediction of the used automotive parts. In this case, the remaining life in terms of energy absorption capability of the W-beam after any particular years of service is estimated by associating the corrosion kinetics logarithmic equation with the mean probabilistic displacement and mean probabilistic energy absorption provided by the stochastic crash simulation. Subjected to impact masses of 10kg, the results indicate the degradation of energy absorption capability of 1.537% is estimated for II-beam and 2.733% for W-beam due to general corrosion after 15 years of service life. The outcomes of the research could be well contributed towards enhancement of knowledge as well as industrial applications related to design for recovery of automotive components.,Ph.D.
Pages:	228
Call Number:	TD797.5.A433 2018 3 tesis
Publisher:	UKM, Bangi
Appears in Collections:	Faculty of Engineering and Built Environment / Fakulti Kejuruteraan dan Alam Bina

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