Fully Fuzzy Time-Cost Trade-Off in a Project Network - A New Approach

Abstract

In this paper, we propose a new approach to Fuzzy network crashing in a project network whose activity times are uncertain. The uncertain parameters in the project network are represented by triangular fuzzy numbers. By using a new type of fuzzy arithmetic and a fuzzy ranking method we propose a method for finding an optimal duration by crashing the fuzzy activities of a project network without converting the fuzzy activity times to classical numbers. A numerical example is provided to illustrate the proposed method.

Keywords: Triangular fuzzy number, fuzzy ranking, fuzzy project network, Critical path, crashing.