| In recent years, along with the intensiveness of the competition in automotive industry, many vehicle OEMs start to take actions to reduce the costs in order to achieve more profits. Among the activities towards cost reductions, purchasing related activities are playing more and more important effects. Since the supplier selection is the key point of the purchasing activities, it is very crucial to decide a proper method for supplier selection in vehicle OEMs.This dissertation starts with material classification by Kraljic matrix for vehicle OEMs, it follows with the characteristics, concerned purchasing strategies and positioning methods for 4 types of materials(Strategic material, bottleneck material, leverage material and tactical material) in Kraljic matrix. The supplier selection evaluation is divided into supplier capability evaluation and project evaluation 2 parts considering the specialty of the automotive industry. Then it specifically introduces the definitions, calculation methods as well as evaluation criteria for the evaluation items covering operation status, quality, logistics, project cost and so on. Additionally, according to the characteristics for each type of material, it is proposed with a solution to have different supplier selection methods upon different materials. To have consensus based supplier selection for strategic material, to have AHP method based supplier selection for bottleneck material and leverage material, to have NPV method based supplier selection for tactical material. As well the dissertation continues to give a detailed introduction for the process and validation of the AHP method. Finally, G company is taken as the background for the case study in supplier selection. The study provides the suggestion to improve the current process and methodology and it raises an example to go through a complete supplier selection process with AHP method for oil temperature sensor which is set as a bottleneck material in the case study.The dissertation concludes that it will improve the efficiency and reliability of the supplier selection for vehicle OEMs in case corresponding supplier selection method is applied upon the material type defined by Kraljic matrix. |
