| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Coules, Harry E.
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (17/17 displayed)
- 2024Corrosion mechanisms of plasma welded Nickel aluminium bronze immersed in seawatercitations
- 2023The role of corrosion pit topography on stress concentration
- 2023A novel unified constraint parameter based on plastic strain energycitations
- 2022Bending fatigue life evaluation of bridge stay cablescitations
- 2022The Role of Surface Roughness on Pitting Corrosion Initiation in Nickel Aluminium Bronzes in Aircitations
- 2022Investigation into the effects of prior plasticity on creep accumulation in 316H stainless steelcitations
- 2021Compressive fatigue characteristics of octet-truss lattices in different orientationscitations
- 2020Study of residual stress and microstructural evolution in as-deposited and inter-pass rolled wire plus arc additively manufactured Inconel 718 alloy after ageing treatmentcitations
- 2020Effect of crack-like defects on the fracture behaviour of Wire + Arc additively manufactured nickel-base Alloy 718citations
- 2019Fatigue of thin periodic triangular lattice platescitations
- 2019Effects of residual stress and localised strain-hardening on the fracture of ductile materialscitations
- 2017Applying electron backscattering diffraction to macroscopic residual stress characterisation in a dissimilar weldcitations
- 2017Three-dimensional mapping of the residual stress field in a locally rolled aluminium alloy specimencitations
- 2016Interaction of Residual Stresses With Applied Stresses in a Dissimilar Metal Electron Beam Welded Specimencitations
- 2015Comparative study of evolution of residual stress state by local mechanical tensioning and laser processing of ferritic and austenitic structural steel welds.
- 2012Characterising the effects of high-pressure rolling on residual stress in structural steel welds
- 2011Measurement and modelling of the transient thermal-mechanical strain field during GMA welding
Places of action
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article
A novel unified constraint parameter based on plastic strain energy
Abstract
Constraint, defined as the resistance of a component against plastic deformation, has a significant effect on the materials’ fracture toughness. A loss of constraint can mean a higher fracture toughness. The standard test geometries such as C(T) specimens are designed to have high levels of constraint thus ensuring that a lower bound toughness is measured. To get a more accurate estimate of the integrity of low constraint components, it is necessary to study an approach of quantifying the constraint level and evaluating it on failure load. Currently, widely accepted crack-tip constraint parameters are validated using specimens with uniaxial loading such as C(T) and SEN(B). However, a large number of industrial equipment experiences loading modes other than uniaxial. The multi-axiality has been considered an important effect in various standards. Load multiaxiality can cause a change in constraint thus fracture toughness. In this paper, a novel unified constraint parameter λ based on the plastic strain energy was proposed. A series of uniaxial and biaxial bending experiments made of BS1501-224 28B steel were conducted at 160℃. A large amount of previous fracture test data of C(T) and SEN(B) specimens were used to support the study. The elastic–plastic parameter Q and the unified parameters φ, Ad* were calculated as a comparison. It is shown that the newly suggested parameter λ not only can characterize the constraint of C(T) and SEN(B) specimens but is effective in characterizing the multi-axiality effect while traditional constraint parameters fail to do so.