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Shielding effects and dislocation repositioning at cleavage crack growth
Luleå tekniska universitet.
Luleå tekniska universitet.
1996 (English)In: Mechanisms and mechanics of damage and failure: proceedings of the 11th Biennial European Conference on Fracture - ECF 11 - held in Poitiers-Futuroscope, France, 3 - 6 September 1996 / [ed] J. Petit, EMAS , 1996, Vol. vol. 1, p. 419-424Conference paper, Published paper (Refereed)
Abstract [en]

The motion of pre-existing edge dislocations in an infinite linear elastic body is studied. Motion, is due to a quasi-statically steady-state growing crack. In the model, the dislocations glide if the force on the dislocation exceeds a critical value. Obtained results are changes in dislocation density, the shielding effect on the crack tip and residual stresses. The model is applied to an isotropic material. The residual stress far behind the crack tip is tensile near the crack, decreasing to zero at a certain distance above the crack plane. The indication is that the shielding effect may be considerable

Place, publisher, year, edition, pages
EMAS , 1996. Vol. vol. 1, p. 419-424
National Category
Applied Mechanics
Research subject
Solid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-37268Local ID: b3e25570-fbfb-11dc-a946-000ea68e967bISBN: 0-947817-90-5 (print)OAI: oai:DiVA.org:ltu-37268DiVA, id: diva2:1010766
Conference
Biennial European Conference on Fracture (ECF) : 03/09/1996 - 06/09/1996
Note
Godkänd; 1996; 20080327 (cira)Available from: 2016-10-03 Created: 2016-10-03Bibliographically approved

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Total: 19 hits
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