High-speed camera study of Stage III crack propagation in chemically strengthened glass

作者：Tang Z*******; Abrams Matthew B; Mauro John C^*; Zoeller Leon R; Venkataraman Natesan; Hu Guangli

来源：Applied Physics A-Materials Science & Processing, 2014, 116(2): 471-477.

DOI：10.1007/s00339-014-8370-y

Thermally or chemically strengthened glass is more resistant to damage and breakage compared to non-strengthened glass. Both strengthening mechanisms are based on incorporation of a compressive stress profile in the surface of the glass, which must be balanced by an equivalent amount of integrated tensile stress in the interior of the glass. This tensile stress is believed to affect the kinetics of Stage III crack propagation upon fracture of the sample. In this study, we use a high-speed camera to perform direct measurement of the kinetics of Stage III fracture in a strengthened glass sample. Data including crack propagation speed, crack bifurcation distance, and bifurcation angles are collected at a rate of 500,000 frames per second and then characterized. The authors believe that these data will provide a foundation for understanding the physics of Stage III fracture in strengthened glass samples.

• 出版日期2014-8