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This content will become publicly available on August 4, 2018

Title: Crack Path Selection in Thermally Loaded Borosilicate/Steel Bibeam Specimen

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.
Authors:
ORCiD logo [1] ;  [1]
  1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Publication Date:
Report Number(s):
SAND-2017-5436J
Journal ID: ISSN 0014-4851; 653529
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Experimental Mechanics
Additional Journal Information:
Journal Volume: 58; Journal Issue: 1; Journal ID: ISSN 0014-4851
Publisher:
Springer
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
WSEAT; USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Brittle fracture; Glass; Stability; Crack path; Crack propagation
OSTI Identifier:
1421862