Environmental Cracking under Mixed-Mode Conditions

Authors

E. E. Gdoutos, Michigan Technological University
Elias C. Aifantis, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

1986

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

Crack growth criteria under coupled environmental and mixed-mode loading conditions are developed. They are based on the physical assumption that crack propagation occurs in the direction of maximum concentration of the corrosive species. Crack growth begins when the concentration reaches a critical value at a specific distance ahead of the crack tip and the subcritical crack velocity also depends on this critical concentration. Power law relations between the external pressures (threshold conditions) or crack velocities (kinetic conditions) and the sum of the squares of the two stress intensity factors governing the structure of stress field in the vicinity of the crack tip are established. The concept of the critical stress-concentration intensity factor is discussed for threshold conditions, and the crack path is determined for kinetic conditions.

Publisher's Statement

© 1986

Publication Title

Engineering Fracture Mechanics

Recommended Citation

Gdoutos, E., & Aifantis, E. C. (1986). Environmental Cracking under Mixed-Mode Conditions. Engineering Fracture Mechanics, 23(2), 431-439. http://doi.org/10.1016/0013-7944(86)90085-8
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5252