Dynamic mixed mode crack propagation behavior of structural bonded joints

被引：0
|
作者：
Lee, Ouk Sub [1 ]
Kobayashi, Albert S. [2 ]
机构：
[1] Sch. Mech., Aerosp. Automat. Eng., Inha University, Inchon 402-751, Korea, Republic of
[2] Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600, United States
来源：
Key Engineering Materials | 2000年 / 183卷
关键词：
Cameras - Cantilever beams - Crack propagation - Interfaces (materials) - Joints (structural components) - Least squares approximations - Loads (forces) - Stress analysis - Stress intensity factors;
D O I：
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摘要：
The stress field around the dynamically propagating interface crack tip under a mixed mode loading condition has been studied by using a hybrid experimental method. The variation of dynamic stress field around the dynamic interfacial crack tip is photographed by the Cranz-Shardin type camera having 106 fps rate. The dynamic interfacial crack propagating velocities and the shapes of isochromatic fringe loop are characterized for varying mixed conditions in double cantilever beam (DCB) specimen. The dynamic interfacial crack tip complex stress intensity factors, K1 and K2, are extracted by using the overdeterministic least square method. In addition, it is found that the dynamic interface crack propagating velocities under the mixed mode loading conditions are significantly small compared to those obtained under the mode I impact loading conditions by Shukla and Rosakis in the USA.
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