An Approach to Find Critical Path Using Trapezoidal Picture Fuzzy Numbers

One of the most challenging areas in the supply chain is to manage the links between suppliers and customers. More the number of players, more the complexities. Critical path method (CPM), one of the project management techniques, helps to handle these complexities. Any delay in the Critical Path activities delays the project. For many projects in the actual world we have to use human judgment for the estimation of the duration of activities. In this paper, we present a new approach in which activity time is taken as a trapezoidal picture fuzzy number (TPFN) which is an extension of an intuitionistic fuzzy set, and it is capable to analyze the problems that contain uncertain and vague information. Also, in order to explain the approach, a numeric example is given with a suitable graphical structure and tables.