Green supplier selection using hybrid grey relational analysis with fuzzy logic method

摘要

Green supplier selection is an integral part of Supply Chain Management in recent times. With increasing concern on environment protection and ecological preservation use of green factors in supplier selection is vital for every organization. The general concept behind green supplier selection is to evaluate suppliers based on certain environmental and cost effective criteria and select the one with best ranking. Hence green supplier selection is a crucial process. Present work proposes the application of a hybrid MCDM method, Grey relational analysis with fuzzy logic for green supplier selection. An example problem is solved by this method and a comparison with the outcome obtained using MOORA and COPRAS method for same problem is presented to verify the proposed method. Results revealed that ranking orders for the first supplier and second supplier were interchanged with grey relational analysis when compared with COPRAS and MOORA methods. But after using fuzzy logics GFRG values of both the supplier obtained are same. This indicates that both the suppliers are equally competitive and there is flexibility to choose any one of them. It indicates that when vagueness is involved, grey-fuzzy logic algorithm can be effectively applied for solving multi-criteria supplier selection problems.