Journal Published Online: 21 December 2017
Volume 46, Issue 4

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

CODEN: JTEVAB

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, China
Zhang, Wang
Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
Song, Yao
Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
Hu, Qingwen
Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
Xie, Luzhou
Department of Mechanics and Civil Engineering, China University of Mining and Technology, Beijing, China
Pages: 9
Price: $25.00
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Details
Stock #: JTE20160643
ISSN: 0090-3973
DOI: 10.1520/JTE20160643