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针对碳纤维－ 环氧树脂复合材料所具有的各向异性的特性，其轴向弹性模量和周向弹性模量具有耦合性，提出测量其轴向弹性模量和周向弹性模量的新方法．该方法依据均衡型斜交层合板理论，在同一构件的两部分上分别做轴向拉伸实验和周向压缩实验，在拉应力－ 应变曲线上取Ｎ（ Ｎ ＞ ２） 点（σＮ１ ，εＮ１） ，在压应力－ 应变曲线上取Ｎ 点（σＮ２ ，εＮ２） ，把Ｎ组（σＮ１ ，εＮ１ ，εＮ２） 及Ｎ 组（σＮ２ ，εＮ１ ，εＮ２） 分别代入有关方程中，用最小二乘法进行曲线拟合，当轴向拉力和周向压力匹配时，求得轴向弹性模量和周向弹性模量．
Aiming at the anisotropic property of carbon fiber-epoxy composites, the axial elastic modulus and the circumferential elastic modulus are coupled, and a new method for measuring the axial elastic modulus and the circumferential elastic modulus is proposed . In this method, axial tensile test and circumferential compression test were carried out on two parts of the same member respectively according to the theory of balanced bias bias laminates. N (N> 2) points (σN1, εN1 ), N points (σN2, εN2) are taken from the compressive stress-strain curve, N groups (σN1, εN1, εN2) and N groups (σN2, εN1, εN2) are respectively substituted into the relevant equations, Fitting, the axial elastic modulus and the circumferential elastic modulus are obtained when the axial tension and the circumferential pressure are matched.