A Nacre-like Glass that Surpasses the Impact Resistance of Tempered Glass
(2019) TMS 2019 Annual Meeting & Exhibition — Location: San Antonio, Texas (10.March.2019)
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Details
- Authors
Hannard, Florent 
- Abstract
- Glass is widely used in architecture, transportation or electronics because of its high transparency, chemical stability and hardness. Two main strategies are available to improve its fragility. Tempered glass uses compressive stresses near the surface to increase strength and impact resistance, but it shatters catastrophically. Laminated glass contains debris, but it has moderate impact resistance. Here we report a nacre-like glass that outperforms current glass designs. Hexagonal patterns were laser-engraved in thin borosilicate glass plates and then assembled in multilayered glass to form a brick and mortar architecture. For the interlayer we used ethylene-vinyl acetate which is transparent and highly deformable. Impact tests revealed that the resistance of our nacre-like glass panels is double that of tempered glass. MicroCT scans revealed that nonlinear tablet sliding occurs over large volumes, absorbing a tremendous amount of impact energy. Heavier damage is confined to the impact site which makes our material damage tolerant.
- Affiliations
Department of Mechanical Engineering McGill University
Citations
Zhen Yin, Hannard, F., & Francois Barthelat. (2019). A Nacre-like Glass that Surpasses the Impact Resistance of Tempered Glass. TMS 2019 Annual Meeting & Exhibition, San Antonio, Texas. https://hdl.handle.net/2078.5/122282