Though many researchers report the static characteristics of triaxial woven fabric composites, the dynamic behavior of those materials is not clear. In this paper we propose an identification method of equivalent elastic parameters for triaxial woven fabric composites. First, an excitation tests of triaxial woven fabric composite plates and a clinder are carried out. Next, equivalent elastic parameters of the plate are identified. Using these identified parameters, natural frequencies of each specimen are calculated and compared. Then the characteristics of triaxial woven fabric composites are discussed.
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