Study of priority assessment of multiple mechanical product projects based on AHP and GRA

Project-oriented mechanical manufacturing companies that make production per orders are limited with resources when getting several product projects. The decision makers have to made priority among projects to have ideal allocation and efficient use of resources. Based on the analysis of various factors affecting project priority, this paper designed a feasible and effective assessment index system in line with characteristics of mechanical product projects, incl. 4 categories with 11 indices. Then, the index weight values were determined with analytic hierarchy process, and a grey relational model on priority assessment of multiple mechanical product projects is proposed. It put forward a quantitative method of qualitative indices after the discussions of the index quantitative issues of the model. Finally, a case study justified that the combination use of analytic hierarchy process and grey relational analysis method could solve to some extent the issues that the subjective factor in priority assessment of multiple mechanical product projects was too much, as a quantitative reference for company decision-makers.