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Experimental Investigation on Dynamic Crack Propagation Through Interface in Glass

  • Hwun Park
  • Weinong ChenEmail author
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

Experimental analyses are conducted to investigate the dynamic crack propagation through the interface in glass. Failure wave, which is a dense crack network initiated from a surface, is a characteristic of dynamic failure of glass. It has been observed that the cracks driven by a high dynamic load may stop at an interface even though the stress wave goes through it. The cracks can also pass through the interface if the stress is high enough. To understand the behavior of the failure wave, the interaction between a propagating crack and an interface needs to be investigated. In this study, the behavior of a single dynamic crack as it interacts with an interface is investigated. High speed photography and optical methods are employed to visualize the phenomena. A notched glass sample having an interface is impacted with a projectile. A single crack is initiated at the notch tip by the dynamic loading and propagates into the interface. The crack stops if the interface has no adhesive. The crack passes through the interface if it has a very thin layer of adhesive. The crack branches into multiple cracks if the interface has a finite thick layer of adhesive or the impact speed is very high. The branch patterns depend on the thickness of adhesive l ayer and loading condition.

Keywords

Stress Intensity Factor Adhesive Layer Multiple Crack Dynamic Crack Impact Speed 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.School of Aeronautics and AstronauticsPurdue UniversityWest LafayetteUSA

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