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    A review of light duty passenger car weight reduction impact on CO2 emission
    (Inderscience Publishers, 2018) Kacar I.; Durgun I.; Ozturk F.; Simmons R.J.
    Over the last few decades, we have witnessed a significant increase in average temperatures all over the globe. Global warming has been now recognised as one of the major problems facing our world. In addition to natural processes, urbanisation, industrialisation, fossil fuel consumption, deforestation and other human activities have also contributed to excessive levels of greenhouse gases in the atmosphere, resulting in drastic climate change. This study investigates the relation between vehicle weight and CO2 emission for light-duty passenger cars. This study also analyses the fuel consumption in different cases. The evaluation of emissions is based on the CO2 composition of the total emission. Results show the relationship among weight, fuel consumption and CO2 emission. Under these circumstances, the most important way of reducing fuel consumption is to make the mass of the vehicle as small as possible when vehicle speed is constant. Various industry-wide technology adoptions on manufacturing methodologies to make vehicles' bodywork lighter are reviewed. Copyright © 2018 Inderscience Enterprises Ltd.
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    Evaluation of anisotropy by two different tests for TRIP800 steel
    (Trans Tech Publications Ltd, 2014) Ozturk F.; Toros S.; Kilic S.; Kacar I.
    For the process modeling, material properties such as anisotropy values at different orientation are very important. The most commonly used method for the determining of the anisotropy values is the tensile test that is performed for samples are prepared at different orientation. Besides the tensile test, the anisotropy parameters of TRIP 800 steel are measured with the hole-expansion test. The effects of the test methods on the yield surfaces are determined for using two different anisotropic yield criteria are Hill-48 and Barlat-89. Results illustrated that a significant difference is observed in the yield surfaces for the two test methods. The material under biaxial deformation is deformed plastically faster than the uniaxial deformation mode. © (2014) Trans Tech Publications, Switzerland.