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Effects of different factors on the measured values of flexural modulus and flexural strength of unidirectional carbon/epoxy composites are investigated. This allows a correct interpretation of the results of flexural macromechanical properties obtained in three-point flexure tests. The shear deformation, the displacement of neutral axis from the mid-depth of the beam, and the nonuniform distribution of stresses in bent coupons are discussed. 相似文献