| 维氏硬度曲面修正系数的计算机拟合 |
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| 引用本文： | 魏毅静,方健,陈卓人,王承忠.维氏硬度曲面修正系数的计算机拟合[J].理化检验(物理分册),2004,40(3):126-129. |
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| 作者姓名： | 魏毅静 方健 陈卓人 王承忠 |
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| 作者单位： | 宝钢研究院分析测试研究中心,上海,201900 |
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| 摘 要： | 根据GB／T 4340．1-1999所附的各类曲面维氏硬度修正系数表，基于多项式拟合技术，给出了曲面维氏硬度修正系数关于压痕对角线长度与曲面直径比值的解析函数表达式，并对维氏硬度值的修约规律进行了总结。
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| 关 键 词： | 维氏硬度试验 曲面修正系数 多项式拟合 数值修约 压痕对角线长度 曲面直径比值 |
| 文章编号： | 1001-4012(2004)03-0126-04 |
COMPUTATIONAL POLYNOMINAL FIT ON CORRECTION FACTORS OF CURVED SURFACE FOR VICKERS HARDNESS TEST |
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| WEI Yi-jing,FANG Jian,CHEN Zhuo-ren,WANG Cheng-zhong.COMPUTATIONAL POLYNOMINAL FIT ON CORRECTION FACTORS OF CURVED SURFACE FOR VICKERS HARDNESS TEST[J].Physical Testing and Chemical Analysis Part A:Physical Testing,2004,40(3):126-129. |
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| Authors: | WEI Yi-jing FANG Jian CHEN Zhuo-ren WANG Cheng-zhong |
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| Abstract: | According to the tables of correction factors listed in national standard GB/T 4340.1-1999 for use in Vickers hardness test made on curved surfaces, analytical functions of correction factors against the ratio variation of the mean diagonal of the indentation to the diameter of curved surface were deduced based on the technique of computational polynominal fitting. Then the rule of rounding off of numberical values for vickers hardness was also discussed in the present paper. |
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| Keywords: | Vickers hardness test Correction factors for curved surface Polynominal fitting Rounding off of numberical value |
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