Numerical Investigations of Ultrasonic Scattering from Voids in Composite Materials Based on Random Void Model
Numerical Investigations of Ultrasonic Scattering from Voids in Composite Materials Based on Random Void Model
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DOI：
10.4028/www.scientific.net/amr.346.639
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发表时间：
2011-09
期刊：
影响因子：
--
通讯作者：
Li Lin;Xiang Zhang;Jun Chen;Xi Meng Li
中科院分区：
文献类型：
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作者：
Li Lin;Xiang Zhang;Jun Chen;Xi Meng Li
基于一种新的二维RVM，利用时域有限差分法计算了碳纤维复合材料的超声衰减系数。结果表明，孔洞形态对超声衰减有不利影响。即使在孔隙率一定的情况下，由于CFRP复合材料中孔隙形态的随机性，超声衰减系数也会发生波动。这一工作对理解CFRP复合材料中孔洞的超声散射机理和材料性能的制定具有重要意义。
Ultrasonic attenuation coefficient is firstly calculated utilizing the finite difference time domain method based on a novel 2-D RVM for carbon fiber reinforced plastic (CFRP) composite materials. The results show that the void morphology has detrimental effect on ultrasonic attenuation. Even at the fixed porosity, ultrasonic attenuation coefficient fluctuates due to the randomness of void morphology in CFRP composite materials. This work significantly helps to understand ultrasonic scattering mechanism of voids and formulation of CFRP composite material properties.