Fracture criterion for conductive cracks in soda-lime glass under combined mechanical and electrical loading

Fracture tests of electrically conductive cracks on pre-notched four-point bending soda-lime glass samples were conducted under combined mechanical and electrical loading. The experimental results show that the critical stress intensity factor at fracture is reduced if an electric field is applied,...

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Bibliographic Details
Published in:International journal of fracture 2010-08, Vol.164 (2), p.185-199
Main Authors: Yan, Dong-Jun, Huang, Hai-You, Cheung, Chi-Wai, Zhang, Tong-Yi
Format: Article
Language:English
Subjects:
Automotive Engineering
Bend tests
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Civil Engineering
Classical Mechanics
Criteria
Electric fields
Electrical resistivity
Electrically conductive
Exact sciences and technology
Fracture mechanics
Fracture mechanics (crack, fatigue, damage...)
Fracture testing
Fundamental areas of phenomenology (including applications)
J integral
Materials Science
Mechanical Engineering
Original Paper
Physics
Soda-lime glass
Solid mechanics
Stress intensity factors
Structural and continuum mechanics
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Summary:Fracture tests of electrically conductive cracks on pre-notched four-point bending soda-lime glass samples were conducted under combined mechanical and electrical loading. The experimental results show that the critical stress intensity factor at fracture is reduced if an electric field is applied, thereby indicating that the electric field makes contributions to the fracture of conductive cracks. Base on the charge-free zone (CFZ) model, the total local J -integral including the local mechanical and electrical J -integrals serves as a fracture criterion for conductive cracks in dielectric ceramics under combined mechanical and electrical loading. The experimental results confirm the fracture criterion deduced from the CFZ model.
ISSN:0376-9429
1573-2673
1573-2673
DOI:10.1007/s10704-010-9468-7