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International Journal of Fracture

, Volume 164, Issue 2, pp 185–199 | Cite as

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

  • Dong-Jun Yan
  • Hai-You Huang
  • Chi-Wai Cheung
  • Tong-Yi Zhang
Original Paper

Abstract

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.

Keywords

Fracture Soda-lime glass Conductive cracks Combined mechanical and electrical loading Charge-free zone model 

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Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • Dong-Jun Yan
    • 1
  • Hai-You Huang
    • 1
  • Chi-Wai Cheung
    • 1
  • Tong-Yi Zhang
    • 1
  1. 1.Department of Mechanical EngineeringThe Hong Kong University of Science and TechnologyKowloonChina

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