A multidimensional assessment and selection methodology: Optimized decision-making of joining technologies in automobile body development

The research deals with the specification of a methodical approach for the systematic selection of the optimum joining technology for different applications in car body development. To date, the decision-making is based on the expertise of the developer; a standardized selection procedure does not exist. Thus, an assessment about the potential of the several joining technologies cannot be made. Within the framework of a benchmark study various research approaches were compared to the requirements identified from a conducted stakeholder analysis. Except the economic criteria, none of these models consider the technological and ecological criteria. Hence, a new approach is required which analyzes the multidimensional criteria. The developed assessment methodology, including the different dimensions, can be used to create an optimum balance amongst the criteria concerning cost, technological value, and sustainability-impact to identify the optimum solution already in the early stage of the car body development.