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The essential work of plane stress ductile fracture
Brian Cotterell,J. K. Reddel +1 more
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In this article, it was shown that the work performed in the end region at the tip of a crack, where the fracture process takes place, is considered the essential work of fracture, and a constant for a particular sheet thickness.Abstract:
In a ductile material, the total work of fracture is not a material constant and linear fracture mechanics is inappropriate. The work performed in the end region at the tip of a crack, where the fracture process takes place, is considered the essential work of fracture, and a constant for a particular sheet thickness. It is shown that this essential work can be estimated from deep edge notched tension specimens by extrapolating the straight line relationship between the work of fracture and ligament length to zero ligament length.read more
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Failure of metals I : brittle and ductile fracture
TL;DR: In this paper, the first overview of failure of metals is presented, focusing on brittle and ductile failure under monotonic loadings, where the focus is on linking microstructure, physical mechanisms and overall fracture properties.
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Failure mechanisms in toughened epoxy resins—A review
Amar C. Garg,Yiu-Wing Mai +1 more
TL;DR: A critical review of the existing theories that have been proposed for the various toughening mechanisms related to modified epoxy resins can be found in this article, where the failure mechanisms leading to the improvement in toughness are discussed.
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On the essential work of ductile fracture in polymers
Yiu-Wing Mai,Brian Cotterell +1 more
TL;DR: In this article, it was shown that the straight line relationship between the total specific fracture work (wf) and ligament length (l) to zero ligament can break down when the ligament lengths to sheet thickness ratio is less than about three.
Journal ArticleDOI
The essential fracture work concept for toughness measurement of ductile polymers
Jingshen Wu,Yiu-Wing Mai +1 more
TL;DR: In this article, the effects of geometry on the essential work of fracture and the plane-stress/plane-strain transition were studied, and it was shown that the specific essential work is a material constant, independent of sample geometry, and equivalent to the critical J-integral.
Journal ArticleDOI
Application of the essential work of fracture (EWF) concept for polymers, related blends and composites: A review
TL;DR: The essential work of fracture (EWF) concept has become very popular to characterize the plane stress toughness of ductile polymers and related systems as mentioned in this paper, due to the simple specimens' preparation, easy testing and simple data reduction procedure.
References
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Yielding of steel sheets containing slits
TL;DR: In this article, a relation between extent of plastic yielding and external load applied was investigated, and panels containing internal and edge slits were loaded in tension and lengths of plastic zones were measured.
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Analysis of Stresses and Strains Near the End of a Crack Traversing a Plate
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On discontinuous plastic states, with special reference to localized necking in thin sheets
TL;DR: In this article, the authors investigated the permitted discontinuities of stress, velocity, and surface slope in a plastic-rigid sheet deformed in its plane, and the necessary restrictions on the stress-state and rate of workhardening were obtained for any yield function and plastic potential.
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Local yielding and extension of a crack under plane stress
G.T Hahn,A. R. Rosenfield +1 more
TL;DR: In this article, the size of locally yielded regions, the stress distribution, and displacements attending a crack in tension under plane stress have been calculated by extending the work of Dugdale and others.