Crack Path Selection in Thermally Loaded Borosilicate/Steel Bibeam Specimen

Journal Article · Fri Aug 04 00:00:00 EDT 2017 · Experimental Mechanics

DOI:https://doi.org/10.1007/s11340-017-0297-8· OSTI ID:1421862

Grutzik, Scott Joseph  ^[1]; Reedy, Jr., E. D. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Here, we have developed a novel specimen for studying crack paths in glass. Under certain conditions, the specimen reaches a state where the crack must select between multiple paths satisfying the K _II = 0 condition. This path selection is a simple but challenging benchmark case for both analytical and numerical methods of predicting crack propagation. We document the development of the specimen, using an uncracked and instrumented test case to study the effect of adhesive choice and validate the accuracy of both a simple beam theory model and a finite element model. In addition, we present preliminary fracture test results and provide a comparison to the path predicted by two numerical methods (mesh restructuring and XFEM). The directional stability of the crack path and differences in kink angle predicted by various crack kinking criteria is analyzed with a finite element model.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: WSEAT; USDOE
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1421862
• Report Number(s): SAND-2017-5436J; 653529
• Journal Information: Experimental Mechanics, Vol. 58, Issue 1; ISSN 0014-4851
• Publisher: Springer
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
Brittle fracture
Glass
Stability
Crack path
Crack propagation