Dynamic crack-interface interactions in SGP laminated glass: An experimental investigation

被引：15
作者：
Xu, Chengliang [1 ]
Yuan, Ye [1 ,2 ]
Zhao, Chunlei [1 ]
Tan, P. J. [2 ]
Xu, Xiaoqing [1 ]
Li, Yibing [1 ]
机构：
[1] Tsinghua Univ, State Key Lab Automot Safety & Energy, Dept Automot Engn, Beijing 100084, Peoples R China
[2] UCL, Dept Mech Engn, Torrington Pl, London WC1E 7JE, England
来源：
MECHANICS OF MATERIALS | 2018年 / 122卷
基金：
美国国家科学基金会;
关键词：
Dynamic fracture; Crack-interface interaction; Optical caustic method; Laminated glass; Dynamic stress intensity factor; FIBER BUNDLE INTERACTION; OPTICAL CAUSTIC METHOD; MATRIX CRACK; STRESS SINGULARITIES; BRITTLE LAYERS; IMPACT; FRACTURE; DEFLECTION; PENETRATION; PROPAGATION;
D O I：
10.1016/j.mechmat.2018.04.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The damage mode (crack arrest or bifurcation) that develops in SentryGlas. Plus (SGP) laminated glass under dynamic impact loading is investigated experimentally in this paper. An optical caustic method is employed which allows simultaneous measurements of the spatial and temporal evolution of crack paths and the dynamic stress intensity factor at the crack tip(s) to elucidate the effects of interface location and impact kinetic energy upon the fracture morphology, crack propagation velocity and the dynamic stress intensity factor in SENB (single-edge notch bend) test specimens loaded in three-point bending by a drop-weight impact system. Results reveal that there is a critical distance, between the interface and pre-crack tip, below which the propagating mode-I crack is arrested by the interface; otherwise, bifurcated mixed-mode cracks will always appear in the impacted glass layer. A maximum dynamic stress intensity factor criterion is shown to be capable of predicting whether bifurcated mixed-mode cracks would appear in the aforesaid.
引用
收藏
页码：76 / 84
页数：9
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