Brittle crack propagation/arrest behavior in steel plate - Part III: Discussions on arrest design
Brittle crack propagation/arrest behavior in steel plate - Part III: Discussions on arrest design
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钢板中脆性裂纹扩展/停止行为 - 第三部分：停止设计讨论
DOI：
10.1016/j.engfracmech.2017.12.004
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发表时间：
2018
影响因子：
5.4
通讯作者：
S. Aihara
中科院分区：
文献类型：
--
作者：
K. Shibanuma;F. Yanagimoto;K. Suzuki;S. Aihara
在系统模型模拟的基础上，讨论了钢板脆性裂纹止裂设计。模拟结果表明，在合金的止裂韧性温度曲线中存在一个必要的裂纹止裂温度。在研究了影响止损韧性和ECAT温度依赖性的可能因素的基础上，提出了任意板强度和厚度值在设计温度下所需止损韧性的估算公式。利用该估计公式得到的预测结果与以往宽双相裂纹止裂试验结果一致。
The brittle crack arrest design of a steel plate is discussed based on systematic model simulations. The simulation results show that an essential crack arrest temperature (ECAT) exists in the temperature dependence curve of arrest toughness. Based on the investigations of the possible factors influencing the temperature dependence of the arrest toughness and the ECAT, an estimation formula is proposed for the required arrest toughness at the design temperature for arbitrary values of the plate strength and thickness. The prediction results obtained using the estimation formula are consistent with the experimental results obtained from past wide duplex crack arrest tests.