| 高孔隙率Al2O3微孔陶瓷冲击性能实验研究 |
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| 引用本文： | 徐松林,张侃,郑文,刘永贵,邓向允.高孔隙率Al2O3微孔陶瓷冲击性能实验研究[J].实验力学,2008,23(6):525-532. |
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| 作者姓名： | 徐松林 张侃 郑文 刘永贵 邓向允 |
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| 作者单位： | 中国科学技术大学,中国科学院材料力学行为和设计重点实验室,合肥,230027 |
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| 摘 要： | 为研究脆性材料冲击损伤性能，对孔隙尺寸μm量级、孔隙率47％～50％的Al2O3微孔陶瓷进行了较系统的实验研究。通过对其进行应变率范围为25．4～494s^-1的冲击实验，结果表明：在较低加载率情况下，材料的模量和强度均表现出较明显的应变率敏感效应；随着加载速率的增加，强度和模量的应变率效应规律相反；而到更高的加载速率时，材料表现出应变率不敏感。借助试件表面的应变花，并与双波法实验结果进行对比，初步探讨了脆性材料在多次冲击下的累积损伤。
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| 关 键 词： | 冲击动力学 实验研究 Al2O3陶瓷 高孔隙率 微孔 |
Experimental Study of Impact Performance of Al2O3 Microvoid Ceramics with High Porosity |
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| XU Song-lin,ZHANG Kan,ZHENG Wen,LIU Yong-gui,DENG Xiang-yun.Experimental Study of Impact Performance of Al2O3 Microvoid Ceramics with High Porosity[J].Journal of Experimental Mechanics,2008,23(6):525-532. |
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| Authors: | XU Song-lin ZHANG Kan ZHENG Wen LIU Yong-gui DENG Xiang-yun |
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| Institution: | CAS Key Laboratory for Mechanical Behavior and Design of Materials,University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory for Mechanical Behavior and Design of Materials,University of Science and Technology of China, Hefei 230027, ChinaCAS Key Laboratory for Mechanical Behavior and Design of Materials,University of Science and Technology of China, Hefei 23;CAS Key Laboratory for Mechanical Behavior and Design of Materials,University of Science and Technology of China, Hefei 230027, China;CAS Key Laboratory for Mechanical Behavior and Design of Materials,University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | |
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| Keywords: | impact dynamics experimental study Al2O3 ceramics high porosity microvoid |
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