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Johannes Weertman

Adjunct Professor of Earth & Planetary Sciences, Emeritus Walter P. Murphy Professor of Materials Science and Engineering

Research

I have been working on theories of fracture and of fatigue. My latest effort in this field has been the creation of the non-redundant dislocation density field method of solving problems involving cracks in elastic plastic solids. With this method, previously intractable crack problems have been solved.

Selected Publications

Asymptotic crack tip stress, rotation pseudo-stress field and dislocation fields for mixed mode I and II cracks in elastic perfectly plastic solids, Mechanics of Materials.  35, pp. 433-452 (2003).

Relationship between stress_strain potentials and maximum shear and zero shear trajectories for mode III crack, in Electron Microscopy: its Role in Materials Science (The Mike Meshii Symposium), edited by J.R. Weertman, M. Fine, K. Faber, D. Quesnel, W. King and P. Liaw, The Minerals, Metals & Materials Society (TMS), Warrendale, PA, pp. 107-112 (2003).

Subsonic type earthquake dislocation moving at approximately  × shear wave velocity on interface between half spaces of slightly different elastic constants,  Geophysical Research Letters, 29, (10), pp. 109-1 to 109-4 (2002).

Effective dislocation free zone and effective stress intensity factor revisited for mode III crack, in Mechanisms & Mechanics of Fracture, The John Knott Symposium, edited by W. O. Soboyejo, J. J. Lewandowski and R. O. Ritchie, The Minerals, Metals & Materials Society (TMS), Warrendale, PA, pp. 31-36, (2002).

The Comninou-Dundurs Effect and position stability of subglacial lakes, Annals of Glaciology.  35, pp. 495-502 (2002).

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