| 单试样三曲线法测定J积分阻力曲线及条件起裂值 |
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| 引用本文： | 马杭,王政.单试样三曲线法测定J积分阻力曲线及条件起裂值[J].实验力学,1993,8(2):187-191. |
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| 作者姓名： | 马杭 王政 |
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| 作者单位： | 甘肃工业大学，甘肃工业大学，甘肃工业大学 兰州，730050，兰州，730050，兰州，730050 |
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| 摘 要： | 用单试样三曲线法测定了16MnR 钢和某一焊缝金属的 J 积分阻力曲线及其条件起裂值,与标准的多试样测定结果基本吻合.实验表明,单试样三曲线的关联分析反映了带裂纹的三点弯曲试样的宏观断裂物理过程,裂纹的延性扩展符合幂函数规律.
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| 关 键 词： | J积分 阻力曲线 金属材料 三曲线法 |
Measurement of J-Resistence Curve and Their Proof Values at Crack Initiation with Method of Three Curves from Single Specimen |
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| Ma Hang Wang Zheng Zhu Liang Gansu University of Technology.Measurement of J-Resistence Curve and Their Proof Values at Crack Initiation with Method of Three Curves from Single Specimen[J].Journal of Experimental Mechanics,1993,8(2):187-191. |
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| Authors: | Ma Hang Wang Zheng Zhu Liang Gansu University of Technology |
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| Institution: | Ma Hang Wang Zheng Zhu Liang Gansu University of Technology |
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| Abstract: | The measurement of J-resistence curves and their proof values at crack initiation of 16MnR steel and a weld metal are carried out with the method of three curves from single specimen. The results of single specimen are in agreement with those of standard multi-specimens.It shows from the experiments that connected analysis of the three curves from single specimen is in accordance with the physical fracture processes of precracked three point bending specimens.The ductile crack exten- sion of them follows the power law relation. |
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| Keywords: | J-integral resistence curve single specimen ductive crack extension |
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