通过文献计量,对Web of Science Core Collection数据库中近5年来国际上的频谱激电法相关论文进行统计与分析,给出了在频谱激电研究领域的主要国家、机构、作者、期刊的论文数目和引用频次、以及学科分布等情况。在此基础上,从含颗粒多...通过文献计量,对Web of Science Core Collection数据库中近5年来国际上的频谱激电法相关论文进行统计与分析,给出了在频谱激电研究领域的主要国家、机构、作者、期刊的论文数目和引用频次、以及学科分布等情况。在此基础上,从含颗粒多孔介质模型研究、水文地球物理方面、工程环境调查方面、生物地球物理方面、岩矿石与土壤电性研究等方面对频谱激电法的研究进展进行归纳与概述,由此展示频谱激电法最新发展趋势和研究热点。展开更多
A micromechanical model for elastic behavior analysis of angle-interlock woven ceramic composites is proposed in this paper. This model takes into account the actual fabric structure by considering the fiber undulatio...A micromechanical model for elastic behavior analysis of angle-interlock woven ceramic composites is proposed in this paper. This model takes into account the actual fabric structure by considering the fiber undulation and continuity in space, the cavities between adjacent yarns and the actual cross-section geometry of the yarn. Based on the laminate theory, the elastic properties of 3D angle-interlock woven ceramic composites are predicted. Different numbers of interlaced wefts have almost the same elastic moduli. The thickness of ceramic matrix has little effect on elastic moduli. When the undulation ratio increases longitudinal modulus decreases and the other Young＇s moduli increase. Good agreement between theoretical predictions and experimental results demonstrates the feasibility of the proposed model in analyzing the elastic properties of 3D angle-interlock woven ceramic composites. The results of this paper verify the fact that the method of analyzing polyester matrix composites is suitable for woven ceramic composites.展开更多
文摘通过文献计量,对Web of Science Core Collection数据库中近5年来国际上的频谱激电法相关论文进行统计与分析,给出了在频谱激电研究领域的主要国家、机构、作者、期刊的论文数目和引用频次、以及学科分布等情况。在此基础上,从含颗粒多孔介质模型研究、水文地球物理方面、工程环境调查方面、生物地球物理方面、岩矿石与土壤电性研究等方面对频谱激电法的研究进展进行归纳与概述,由此展示频谱激电法最新发展趋势和研究热点。
基金Project supported by the National Natural Science Foundation of China (No.90405015)
文摘A micromechanical model for elastic behavior analysis of angle-interlock woven ceramic composites is proposed in this paper. This model takes into account the actual fabric structure by considering the fiber undulation and continuity in space, the cavities between adjacent yarns and the actual cross-section geometry of the yarn. Based on the laminate theory, the elastic properties of 3D angle-interlock woven ceramic composites are predicted. Different numbers of interlaced wefts have almost the same elastic moduli. The thickness of ceramic matrix has little effect on elastic moduli. When the undulation ratio increases longitudinal modulus decreases and the other Young＇s moduli increase. Good agreement between theoretical predictions and experimental results demonstrates the feasibility of the proposed model in analyzing the elastic properties of 3D angle-interlock woven ceramic composites. The results of this paper verify the fact that the method of analyzing polyester matrix composites is suitable for woven ceramic composites.
