Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Plastic Zones"”.
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Effects of prior ductile tearing on cleavage fracture in the ductile-to-brittle transition region
… extension. The increased toughness develops when plastic zones formed at the crack tip interact with nearby specimen surfaces which relaxes crack-tip constraint (stress triaxiality). In the mid-to-upper transition region, small amounts of ductile crack extension (typically $<$1-2 mm) routinely …
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High resolution fatigue crack growth analysis of crack closure and slip irreversibility using digital image correlation
… polycrystalline and the two oriented specimens. Plastic zones associated with the fatigue crack growth were determined for all specimens using an anisotropic yield criterion. The strains in the plastic zone obtained from digital image correlation were investigated in detail and a dependence on …
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Συμβολή της ηλεκτρονικής μικροσκοπίας σαρώσεως στη μελέτη ελαστοπλαστικών φαινομένων κατά τη θραύση των υλικών
… a systematic study of some basic elastoplastic phenomena during the fracture of edge-cracked specimens is undertaken. In this way the formation process of plastic zones, the field and "pseudofield" of slip- lines around a static and a propagating crack is studied qualititavely and …
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Effect of a Graded Layer on the Plastic Dissipation During Mixed-Mode Fatigue Crack Growth on Ductile Bimaterial Interfaces
… rates in ductile metals based on the total plastic dissipation ahead of a crack tip was proposed in 2003. Since then, this theory has been extended to layered material systems that typically include mixed-mode loading and elastic/plastic mismatch. Previous research by the author first …
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ANALYSIS AND DESIGN OF EXCAVATION SUPPORT SYSTEM IN SOFT CLAY
… the excavation. Having some of its basis in the plastic theory of structures, the method enables the minimum required moment capacity and corresponding embedded depth to be obtained for assurance against soil failure. A composite pressure diagram was suggested that would provide an adequate …