| 测定陶瓷材料阻力曲线的包络线法的改进 |
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| 引用本文： | 李冬云,杨辉,郭兴忠.测定陶瓷材料阻力曲线的包络线法的改进[J].陶瓷学报,2006,27(1):75-78. |
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| 作者姓名： | 李冬云 杨辉 郭兴忠 |
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| 作者单位： | 浙江大学纳米科学与技术中心,杭州,310027 |
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| 摘 要： | 本文通过对压痕弯曲梁的压痕载荷和断裂强度关系的理论分析和推导,介绍了一种确定切点(即K曲线和R曲线的交点)的方法,这些切点的轨迹组成了R曲线,并通过实验对这种方法进行了验证。结果发现这种改进的包络线法与常规的包络线法所测得的阻力曲线相吻合。这种方法完善了常规的K曲线切点包络线法,更为重要的是它揭示了压痕弯曲梁的压痕载荷和断裂强度关系的物理内涵。
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| 关 键 词： | 阻力曲线 包络线法 切点 改进 |
| 文章编号： | 1000-2278(2006)01-0075-04 |
| 收稿时间： | 2005-10-02 |
| 修稿时间： | 2005年10月2日 |
IMPROVEMENT ON THE ENVELOPE METHOD EVALUATING R-CURVE OF CERAMICS |
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| Li Dongyun,Yang Hui,Guo Xingzhong.IMPROVEMENT ON THE ENVELOPE METHOD EVALUATING R-CURVE OF CERAMICS[J].Journal of Ceramics,2006,27(1):75-78. |
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| Authors: | Li Dongyun Yang Hui Guo Xingzhong |
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| Affiliation: | Center for nano-science and nano-technolgy, Zhejiang University, Hangzhou 310027 |
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| Abstract: | In this paper, the strength-indentation load relation was analyzed, a new method is proposed to define the point in the K-curve at which the R-curve intersect the points form the locus of the R-curve. This method complemented the conventional "tangency condition"approach in determining the R-curve from the experimental strength-indentation load relation, the physical insight of the strength-indentation load relation is explored by developing the method in the present study. |
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| Keywords: | R-curve the envelope method tangency point improvement |
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