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Agyekum, B, Kissi, E, Yamoah Agyemang, D and Badu, E (2018) Examining barriers for the utilization of non-traditional cost estimating models in developing countries. Journal of Engineering, Design and Technology, 16(06), 814–27.

Aouad, R and Amara, I (2018) Influence of the cutting condition on the wear and the surface roughness in the steel AISI 4140 with mixed ceramic and diamond tool. Journal of Engineering, Design and Technology, 16(06), 828–36.

Chen, Y and Yang, Z (2018) Validity and reliability of rating scales for subjective breathing resistance of wearing respirators. Journal of Engineering, Design and Technology, 16(06), 837–49.

De Silva, N, Rathnayake, U and Kulasekera, K (2018) Under-reporting of construction accidents in Sri Lanka. Journal of Engineering, Design and Technology, 16(06), 850–68.

Kulkarni, S, Edwards, D J, Parn, E A, Chapman, C, Aigbavboa, C O and Cornish, R (2018) Evaluation of vehicle lightweighting to reduce greenhouse gas emissions with focus on magnesium substitution. Journal of Engineering, Design and Technology, 16(06), 869–88.

• Type: Journal Article
• Keywords: Greenhouse gas emissions; Emission reduction; Lightweight materials;
• ISBN/ISSN: 1726-0531
• URL: https://doi.org/10.1108/JEDT-03-2018-0042
• Abstract:
  Vehicle weight reduction represents a viable means of meeting tougher regulatory requirements designed to reduce fuel consumption and control greenhouse gas emissions. This paper aims to present an empirical and comparative analysis of lightweight magnesium materials used to replace conventional steel in passenger vehicles with internal combustion engines. The very low density of magnesium makes it a viable material for lightweighting given that it is lighter than aluminium by one-third and steel by three-fourth. A structural evaluation case study of the “open access” Wikispeed car was undertaken. This included an assessment of material design characteristics such as bending stiffness, torsional stiffness and crashworthiness to evaluate whether magnesium provides a better alternative to the current usage of aluminium in the automotive industry. The Wikispeed car had an issue with the rocker beam width/thickness (b/t) ratio, indicating failure in yield instead of buckling. By changing the specified material, Aluminium Alloy 6061-T651 to Magnesium EN-MB10020, it was revealed that vehicle mass could be reduced by an estimated 110 kg, in turn improving the fuel economy by 10 per cent. This, however, would require mechanical performance compromise unless the current design is modified. This is the first time that a comparative analysis of material substitution has been made on the Wikispeed car. The results of such work will assist in the lowering of harmful greenhouse gas emissions and simultaneously augment fuel economy.

Nawfal, S and Ali, F (2018) The acceleration of 3D graphics transformations based on CUDA. Journal of Engineering, Design and Technology, 16(06), 925–37.

Ndokwana, A and Fore, S (2018) Economic assessment of bioethanol production from maize in South Africa. Journal of Engineering, Design and Technology, 16(06), 973–94.

Owusu-Manu, D, Edwards, D J, Kukah, A, Parn, E A, El-Gohary, H and Hosseini, M R (2018) An empirical examination of moral hazards and adverse selection on PPP projects. Journal of Engineering, Design and Technology, 16(06), 910–24.

Romanello, G (2018) Stability analysis of mobile cranes and determination of outriggers loading. Journal of Engineering, Design and Technology, 16(06), 938–58.

Senaratne, S, Mirza, O, Lambrousis, G and Fernandez-Soncini, A (2018) Structural applicability of steel fibre-recycled aggregate concrete in construction. Journal of Engineering, Design and Technology, 16(06), 959–72.

Witmer, A (2018) Contextual engineering assessment using an influence-identification tool. Journal of Engineering, Design and Technology, 16(06), 889–909.