A Fuzzy Comprehensive Evaluation Method of Maintenance Quality Based on Improved Radar Chart

There are some problems in comprehensive evaluation of maintenance quality. For example, the evaluation is invisible, the importance of each factor is unclear, and especially the appraisal results ordering of several appraisal objects with similar maintenance quality performance is difficult. For this, this paper presents an improved radar chart model and studies the fuzzy comprehensive evaluation of maintenance quality based on this model. At first, the maintenance quality index system is set up. Then the preliminary evaluation on the first layer index is made using the multi-attribute fuzzy comprehensive evaluation method, and the index weight is calculated according to AHP. Finally, the improved radar chart model of maintenance quality is constructed for comprehensive evaluation. With analysis of a case study, the result shows the validity of the model in maintenance quality evaluation.