Abstract: The fuzzy theory is applied to deal with composites in this paper. The multi-factor relation figure and fuzzy matrix influencing the properties of the super-hybrid composite ARALL are presented. By using the matrix operation of the fuzzy theory, the multi-criteria matrix is obtained. Through the two-grade-decision method, the degree of influences on the properties of ARALL by the factors, such as the residual stress, adhesive property and content of the adhesive,is analysed. The result shows that the state of the residual stress is the chief factor, followed by the adhesive property and the content. This paper offers a new method to the raw materials choice for the composite and its design, and both the result and the method of the paper are of significance to the study of composites.

Key words: hybrid composite, ARALL, multi-criteria analysis, fuzzy theory