Sensitivity of fracture strength in porous glass
Source abstract
Abstract
Abstract We investigated the effect of porosity and crack size distributions on the fracture behavior of porous glass through a combined finite element and fracture mechanics method. Simulations showed that the effect of crack size distributions on the change in fracture strength with porosity decreases as the pore size to crack size ratio increases. For a pore size to crack size ratio of >∼4, the average failure initiating crack size decreases with increasing porosity. Two regions were defined to describe the relationship between porosity and fracture strength: Region I for porosity less than 20 vol.% and Region II for porosity greater than 20 vol.%. Simulation results were directly compared to the porous glass experiments from the literature.
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Research context
OpenAlex topics: Dental materials and restorations · Recycling and utilization of industrial and municipal waste in materials production · Advanced ceramic materials synthesis
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Affiliations
Biomedical, Chemical and Materials Engineering Department San Jose State University San Jose California
School of Materials Engineering Purdue University West Lafayette Indiana
College of Science and Engineering San Francisco State University San Francisco California
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