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    Volume 46, Issue 4 (July 2018)

    Special Issue Paper

    Dynamic Fracture Characterization of Cantilever Structure Specimens with V-Notch Tips

    (Received 14 December 2016; accepted 6 March 2017)

    Published Online: 2018

    CODEN: JTEVAB

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    Abstract

    The dynamic fracture behavior of polymethyl methacrylate (PMMA) cantilever structure specimens with different notch angles under low-speed impact is studied using the digital array high-speed imaging system. First, dynamic caustic patterns at the notch tip and the propagating crack tip, respectively, are recorded. Then, the evolution of the stress intensity factor (SIF) and the crack propagation velocity are calculated, which are illustrated in detail based on the stress wave. Finally, the effect of notch angle on fracture behavior is analyzed, and the microscopic characterizations of the fracture surface are described. The results play an important role in evaluating the dynamic fracture properties of cantilever structures.

    Author Information:

    Yue, Zhongwen
    Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing,

    Zhang, Wang
    Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing,

    Song, Yao
    Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing,

    Hu, Qingwen
    Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing,

    Xie, Luzhou
    Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing,


    Stock #: JTE20160643

    ISSN:0090-3973

    DOI: 10.1520/JTE20160643

    Author
    Title Dynamic Fracture Characterization of Cantilever Structure Specimens with V-Notch Tips
    Symposium ,
    Committee G04