| 用压痕法测陶瓷材料K_(lc)的研究 |
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| 引用本文： | 宋显辉.用压痕法测陶瓷材料K_(lc)的研究[J].武汉理工大学学报,1993(4). |
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| 作者姓名： | 宋显辉 |
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| 作者单位： | 武汉工业大学材料研究与测试中心 |
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| 摘 要： | 本文从研究这种方法的准确性出发,指出在压痕处的残余应力在这里扮演了一个极重要的角色,它使理论分析变得极其困难,同时又会使压痕裂纹慢速扩展,影响测量的准确性。本文还从微观结构分析出发,指出完全用传统断裂力学的观点去评价压痕法测K_(1e)的准确性是不可取的。
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| 关 键 词： | 压痕法 残余应力 微裂纹 |
Study on Measuring K_(1c) of Ceramic Materials by Indentation Method |
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| Song Xianhui Research and Test Centre of Materials,WUT.Study on Measuring K_(1c) of Ceramic Materials by Indentation Method[J].Journal of Wuhan University of Technology,1993(4). |
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| Authors: | Song Xianhui Research and Test Centre of Materials WUT |
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| Abstract: | Beginning with the accuracy of this method,this paper points out that the residual stress in the indentation position plays a very important role. It makes the theoretical analysis ex- tremely difficult and the indentation microcracks slowly expand, and effect on the accuracy of the measurement. It is described that according to the microstructure analysis it is not acceptable to esti- mate, from the point of view of classical fracture mechanics. The accuracy of measuring K_(IC) by inden- tation methed is also described in the paper. |
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| Keywords: | indentation method residual stress microcrack |
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