| HY－130钢断裂特性的实验研究 |
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| 引用本文： | 李肇飞,郑光华. HY－130钢断裂特性的实验研究[J]. 北京航空航天大学学报, 1994, 0(4) |
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| 作者姓名： | 李肇飞 郑光华 |
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| 作者单位： | 青岛建筑工程学院机械系，北京航空航天大学动力系 |
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| 摘 要： | 分析了具有同样厚度、不同宽度的带侧槽（ｓｉｄｅｇｒｏｏｖｅ）ＨＹ－１３０钢三点弯曲深裂纹试样的Ｊ－Ｒ曲线及能量耗散率ｄＷｄｉｓ／Ｂｄａ的变化规律．发现了裂纹在有限载荷下扩展相同长度时，愈宽的试样的Ｒ曲线趋于愈低的位置．并对此进行了分析．并再次论证了ｄＷｄｉｓ／Ｂｄａ是一个反映材料断裂韧性的有意义的参量．
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| 关 键 词： | 断裂韧性；钢；实验；侧槽 |
EXPERIMENTAL RESEARCH ON THE FRACTURE CHARACTERISTICS OF HY-130 STEEL |
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| Li Zhaofei, Zheng Guanghua. EXPERIMENTAL RESEARCH ON THE FRACTURE CHARACTERISTICS OF HY-130 STEEL[J]. Journal of Beijing University of Aeronautics and Astronautics, 1994, 0(4) |
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| Authors: | Li Zhaofei Zheng Guanghua |
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| Abstract: | The behaviors of J-R curves and dissipation rates for side grooved deep notch three point bend test pieces of HY-130 steel with the same thickness but different widths have been studied. Crack growth occurs at limit load and the R-curves follow the pattern that wider pieces give lower curves. Analysis is made and argued that dWdis./Bda is a parameter to reflect the fracture toughness of materials. |
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| Keywords: | fracture toughness steels experiment side groove |
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