A Preliminary Report on 3D Effects on Caustics

Authors

T. W. Webb, Michigan Technological University
E. E. Gdoutos, Michigan Technological University
Elias C. Aifantis, Michigan Technological UniversityFollow

Document Type

Article

Publication Date

1990

Department

Department of Mechanical Engineering-Engineering Mechanics

Abstract

A modification to the standard caustic equations was made to include the effect of a mixed plane stress-plane strain state across the specimen thickness near the crack tip. By assuming the thickness of the plane stress surface layer to be of the size of the plastic zone along the crack axis, a K ~ D⁵⁶ dependence for the stress intensity factor K vs the caustic diameter D was obtained. This dependence contrasts the classical K ~ D⁵² relationship based on plane stress considerations, but it is in good agreement with our experimental data.

Publisher's Statement

© 1990

Publication Title

Engineering Fracture Mechanics

Recommended Citation

Webb, T., Gdoutos, E., & Aifantis, E. C. (1990). A Preliminary Report on 3D Effects on Caustics. Engineering Fracture Mechanics, 35(6), 1121-1124. http://doi.org/10.1016/0013-7944(90)90140-C
Retrieved from: https://digitalcommons.mtu.edu/michigantech-p/5260