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    Sapphire disc with a pre-cut central slit subjected to compressive loading  
   

 

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Shuman Xia
Postdoctoral Scholar

A piece of sapphire disc with a pre-cut central slit subjected to compressive loading. The disc is about the size of a U.S. quarter coin and 1.5 mm thick. Photoelasticity enhanced with a phase multiplication technique is used to visualize the stress distribution inside the disc.

shuman@caltech.edu

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