Abstract
The effects of surface stress on fracture are reviewed. Calculations by Thomson et al. seem to suggest that surface stresses do not affect cleavage fracture when the crack propagates in a self similar manner even though the surface stress can lead to large stresses near the crack tip. However, surface stresses may have an important effect on dislocation emission near the crack tip. A simple analysis is offered to show how these effects may be incorporated into a modified Rice ductile-brittle fracture criterion by adding a term to the unstable stacking energy that takes into account the energy to form an incipient ledge.
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Cammarata, R., Sieradzki, K. Surface Stress Effects on Fracture. MRS Online Proceedings Library 409, 87–93 (1995). https://doi.org/10.1557/PROC-409-87
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DOI: https://doi.org/10.1557/PROC-409-87