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测量了体积含量Vf不同（5．4，9．1和13．6％）的Al2O3短纤维增强的铝基复合材料的纵波声速、横波声速和密度并由此得出它们的切变模量μ和杨氏模量E．结果发现，随Vf增加，纵波声速减小，横波声速增加；与纯铝相比，μ和E均明显增大．还给出纵波超声声速和超声衰减在100～300K温区内的温度响应曲线
The longitudinal wave velocity, shear wave velocity and density of Al2O3 short fiber-reinforced aluminum matrix composites with different volume contents Vf (5.4, 9.1 and 13.6%) were measured and their shear modulus μ And Young’s Modulus E. The results show that with the increase of Vf, the velocity of longitudinal wave decreases and the velocity of transverse wave increases. Compared with pure aluminum, both μ and E increase obviously. Also gives the longitudinal wave ultrasonic velocity and ultrasonic attenuation in the temperature range of 100 ~ 300K temperature response curve