Quantitative Analysis of Evaluation Indices for Engineering Materials Based on Correlation Coefficient

In order to build scientific evaluation index system,reduce the complexity of evaluation course,distribute the weight of each index reasonably,a quantitative analysis method with comprehensive evaluation indices for engineering materials was proposed based on correlation coefficient using the basic theory of principal component analysis. Eight kinds of evaluation indices of five kinds of low temperature storage container materials of aluminum alloys were quantitatively analyzed using the method mentioned above,and five kinds of aluminum alloys were comprehensive evaluated with TOPSIS according to the index system before and after quantitative analysis. The evaluation results obtained from the indices after quantitative analysis were consistent with those obtained from initial indices,but the latter reflected more effectively whether or not the candidate materials could be applicable to the present working condition than the former,which indicated that quantitative analysis evaluation indices of engineering materials based on correlation coefficient are reasonable and feasible.