金属学报  1992, Vol. 28 Issue (4): 28-33

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Charpy裂纹试样的启裂点确定与动态断裂韧性

林君山;鄢文彬;涂铭旌

西安交通大学;西安交通大学;西安交通大学

CRACK INITIATION POINT DETERMINATION AND DYNAMIC FRACTURE TOUGHNESS FOR CHARPY PRE-CRACKED SPECIMEN

LIN Junshan;YAN Wenbin;TU Mingjing Xi'an Jiaotong University

林君山;鄢文彬;涂铭旌. Charpy裂纹试样的启裂点确定与动态断裂韧性[J]. 金属学报, 1992, 28(4): 28-33.
, , . CRACK INITIATION POINT DETERMINATION AND DYNAMIC FRACTURE TOUGHNESS FOR CHARPY PRE-CRACKED SPECIMEN[J]. Acta Metall Sin, 1992, 28(4): 28-33.

摘要 参考文献 相关文章 Metrics 全文: PDF(714 KB)   摘要: 本文研究了用应变片测定Charpy裂纹试样动态断裂启裂点的方法,在不同的试验温度下,用双通道高速采样磁盘存储示波器同时测定了冲击试样的P—t曲线和裂纹尖端区域的名义ε—t曲线,结合动态有限元对Charpy裂纹试样冲击过程的模拟结果,分析了动态断裂韧性的测定方法,并指出了以往动态断裂韧性测定中存在的问题。 关键词 ： 启裂点,  应变片,  动态断裂韧性     Abstract：The method to detect the crack initiation point of Charpy pre-cracked specimenunder dynamic loading was studied using strain gauge. The load-time curve and nominalstrain-time curve at the crack tip for impact testing specimens may be simultaneously measuredby twin-channel oscilloscope with high speed sampling and diskette storing. Based on the dy-namic finite element simulation of impact response of Charpy specimen, the measuring methodof dynamic fracture toughness was analysed and some problems in previous dynamic fracturetoughness measurement were discussed. Key words： crack initiation point    strain gauge    dynamic fracture toughness 收稿日期: 1992-04-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 林君山 鄢文彬 涂铭旌 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1992/V28/I4/28 1 许昌淦,曾忠屏.金属学报,1990;26:A449 2 祝东.冶金工业部钢铁研究总院博士学位论文,1989 3 Kalthoff J F. In: Metal Handbook Ninth Edition, Vol. 8: Mechanical Testing, Metals Park, Ohio: ASM, 1985: 269 4 Kobayashi T. Int J Fract, 1983; 23: R105 5 Kobayashi T. Eng Fract Mech, 1984; 19: 49 6 Kalthoff J F. Int J Fract, 1985; 27: 227 7 林君山.西安交通大学博士学位论文.1989 8 Owen D R, Hinton E. Finite Element in Plasticity: Theory and Practice, Swansea UK: Pineridge Press, 1980 9 Ahmad J, Jung J, Barnes C R. Kanninen M F. Eng Fract Mech, 1983; 17: 235 [1] 冯祥利,王磊,刘杨. Q460钢焊接接头组织及动态断裂行为的研究*[J]. 金属学报, 2016, 52(7): 787-796. [2] 许泽建; 李玉龙; 李娜; 刘元镛 . 加载速率对高强钢40Cr和30CrMnSiNi2A I型动态断裂韧性的影响[J]. 金属学报, 2006, 42(9): 965-970 . [3] 许昌淦;曾忠屏. 航空用超高强度钢的动态断裂韧性[J]. 金属学报, 1990, 26(6): 63-67. Viewed Full text Abstract Cited   Shared      Discussed