Simulation of the Crack Resistance of Ion-Exchange Strengthened Silicate Glass Subject to Bending Strain

• Published in: International applied mechanics Vol. 58; no. 6; pp. 715 - 724
• Main Authors: Hontarovsky, P. P., Smetankina, N. V., Ugrimov, S. V., Harmash, N. H., Melezhyk, I. I
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2022; Springer; Springer Nature B.V
• Subjects: Analysis; Applications of Mathematics; Bending; Compressive properties; Compressive strength; Crack propagation; Engineering; Finite element method; Imports; Ion exchange; Laws, regulations, etc; Multilayers; Sheet glass; Silicates; Strengthening; Surface cracks; Surface defects; Thermal stress; residual stress; stress state; surface layer defects; stress intensity factor; silicate glass; crack resistance
• ISSN: 1063-7095; 1573-8582
• DOI: 10.1007/s10778-023-01195-0

The crack resistance of ion-exchange strengthened sheet silicate glass under bending strains is analyzed numerically using finite-element software for studying the thermal stress state of structures. The results show that the fracture of real sheet glass under tensile stresses during bending depends on crack-like surface defects. If the depth of the zone of compressive stresses from ion-exchange strengthening is much less than the depth of the surface crack, the glass strength slightly depends on the maximum compressive stresses on the surface. The ion-exchange strengthening effect becomes much stronger with decrease in the surface crack depth. The proposed method allows solving important practical problems of the destruction of multilayer aircraft glassworks with internal defects and selecting optimal methods for eliminating such defects.