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1105238_Huang

Elastic root of the fracture behavior of glasses Liping Huang, Rensselaer Polytechnic Institute, DMR 1105238. Outcome: L. Huang’s team at Rensselaer polytechnic Institute found a strong correlation between the thermo-mechanical anomalies and the brittleness of glasses.

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1105238_Huang

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  1. Elastic root of the fracture behavior of glassesLiping Huang, Rensselaer Polytechnic Institute, DMR 1105238 Outcome: L. Huang’s team at Rensselaer polytechnic Institute found a strong correlation between the thermo-mechanical anomalies and the brittleness of glasses. Impact: A basic understanding of what controls the brittleness will help develop engineering guidelines for making strong and tough glasses. Explanation: In-situ high temperature Brillouin light scattering experiments were carried out to study the temperature dependence of elastic moduli of glass, and correlated with its brittleness. The top figure shows that pure silica glass has a strong positive temperature derivative of elastic moduli, and cracks badly under 9.8 N load. While the less brittle glass from the Asahi Glass Company in Japan shows very little temperature dependence in elastic moduli, and no cracks at all under the same load.

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