Abstract
We have developed a novel specimen for studying crack paths in glass. Under certain conditions, the specimen reaches a state where the crack must select between multiple paths satisfying the K II = 0 condition. This path selection is a simple but difficult benchmark case for both analytical and numerical methods of predicting crack propagation. We document the development of the specimen, using an uncracked and instrumented test case to study the effect of adhesive choice and validate the accuracy of both a simple beam theory model and a finite element model. In addition, we present preliminary fracture test results and provide a comparison to the path predicted by two numerical methods (mesh restructuring and XFEM).
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Acknowledgements
The authors thank Garth Rohr and Corey Gibson for assistance with experiments and John Laing for valuable strain gage discussions. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the U.S. Department of Energy’s National Nuclear Security Administration under contract DE-AC04-04AL85000.
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Grutzik, S.J., Reedy, E.D. (2017). Development of Glass/Steel Bibeam Specimen for Study of Brittle Crack Path Stability. In: Zhu, Y., Zehnder, A. (eds) Experimental and Applied Mechanics, Volume 4. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, Cham. https://doi.org/10.1007/978-3-319-42028-8_8
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DOI: https://doi.org/10.1007/978-3-319-42028-8_8
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