Reply to “Comment on: ‘Flexural Strength by Fractography in Modern Brittle Materials’”

Modern buildings and vehicles are increasingly employing tempered and strengthened glass plates as architectural and critical load-bearing structural components. Nevertheless, the fracture behavior of these components is only poorly understood and the literature is largely empirical or anecdotal. In this manuscript we implement a semi-static fracture mechanicsbased model to describe the evolution of a single crack in tempered and strengthened glass plates. This analytical model applies to cracks driven by residual stress and to fracture origins located at the plate's symmetry plane. The model was validated by comparing the branching length, R B , and the mirror radius, R m , computed, to mechanical tests conducted by the authors and results reported in the literature. Branching lengths and mirror radii were found to strongly correlate with the plate's thickness, 2W , and with the peak tensile stress, σ f . It was found that crack branching and mist formation are bounded by the non-dimensional parameter Π 1 ≡ σ f ·W 0.5 /K I C > 3.5 and Π 1 > 3.2 respectively. R. Dugnani (B) Room 203 UM-Shanghai Jiao Tong University (UM-SJTU) -Joint Institute, Finally, it was determined that the branching length displayed a non-zero lower bound approximately equal to a quarter of the plate's thickness whereas the mirror radius had a theoretical zero lower-bound.

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Analytical model of dynamic crack evolution in tempered and strengthened glass plates

Dugnani

Zednik

Verghese

2014

Int J Fract

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Reply to “Comment on: ‘Flexural Strength by Fractography in Modern Brittle Materials’”

Cited by 1 publication

References 8 publications

Analytical model of dynamic crack evolution in tempered and strengthened glass plates

Analytical model of dynamic crack evolution in tempered and strengthened glass plates

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