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SILICA and its process zone

Cindy Rountree 1 Weiying Feng 1
1 SPHYNX - Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
Abstract : This article reviews recent works concerning the damage area size ahead of a crack front in oxide glasses. Literature exemplifies the importance of understanding the crack propagation dynamics in oxide glasses with a number of papers concerning dynamic and stress corrosion cracking in complex (and simplified) oxide glasses. In general, the linear elastic fracture mechanic equation breaks down near the crack front, in a zone frequently called the process zone. The question is how large is this zone near the crack tip? This paper reviews four different techniques to capture the process zone size in pure silica: Atomic force microscopy imaging, neutron diffraction, photon capture, and molecular dynamics simulations. Velocities of the crack front range between stress corrosion cracking dynamics and dynamic fracture, thus providing a better understanding of how the process zone depends on the velocity of the crack front.
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Submitted on : Wednesday, August 26, 2020 - 1:32:47 PM
Last modification on : Tuesday, January 25, 2022 - 3:21:45 AM



Cindy Rountree, Weiying Feng. SILICA and its process zone. International Journal of Applied Glass Science, Wiley, 2020, 11 (3), pp.385-395. ⟨10.1111/ijag.15113⟩. ⟨cea-02922642⟩



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