A synchronous thermal-mechanical in-situ device for dynamic fracture initiation

投稿的翻译标题: 基于在位力热同步实验装置的动态断裂起裂机理研究

Wei Liu, Longkang Li, Heng Yang*, Manxi Chen, Kai Yi, Wei Qi, Shengxin Zhu, Qinglei Zeng, Hao Sen Chen*

*此作品的通讯作者

科研成果: 期刊稿件文章同行评审

3 引用 (Scopus)

摘要

As a typical failure behavior, the dynamic fracture is critical for material safety assessment and design, whose rapid evolution in the crack tip over a short time causes tremendous challenges in characterizing the evolution of the local temperature field. Although researchers have pointed out that temperature significantly affects fracture toughness, the temperature rise and the role of thermal softening in the crack tip region during the dynamic crack initiation need to be clarified. This work aims to evaluate the temperature rise effect at crack initiation in TC4 (Ti-6Al-4V) alloy under impact loading. We developed a thermal-mechanical coupled in-situ measurement system to obtain synchronized COD (crack-tip opening displacement) and temperature field evolution for the dynamic mode I fracture with high temporal and spatial resolution. The evolution of synchronous COD and temperature field during crack initiation under dynamic loading was investigated. The corresponding simulation was conducted to analyze the thermal softening effect at dynamic crack initiation. In TC4 alloy, the maximum temperature detected at crack initiation is about 130 °C, and the thermal effect on the material property is minor. The results of this work fulfill data support for investigating the coupled thermal-mechanical fracture behavior of metal. [Figure not available: see fulltext.].

投稿的翻译标题基于在位力热同步实验装置的动态断裂起裂机理研究
源语言英语
文章编号122492
期刊Acta Mechanica Sinica/Lixue Xuebao
39
8
DOI
出版状态已出版 - 8月 2023

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引用此

Liu, W., Li, L., Yang, H., Chen, M., Yi, K., Qi, W., Zhu, S., Zeng, Q., & Chen, H. S. (2023). A synchronous thermal-mechanical in-situ device for dynamic fracture initiation. Acta Mechanica Sinica/Lixue Xuebao, 39(8), 文章 122492. https://doi.org/10.1007/s10409-023-22492-x