Publications
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On the origin of creep dislocations in a Ni-base, single-crystal superalloy: an ECCI, EBSD, and dislocation dynamics-based study KU Leuven
© 2016 Acta Materialia Inc. This work investigates the origin of creep dislocations in a Ni-base, single crystal superalloy subject to creep at an intermediate stress and temperature. Employing high angular resolution electron backscatter diffraction (HR-EBSD), electron channeling contrast imaging under controlled diffraction conditions (cECCI) and discrete dislocation dynamics (DDD) modelling, it is shown that low-angle boundaries - which ...
A study on the geometry of dislocation patterns in the surrounding of nanoindents in a TWIP steel using electron channeling contrast imaging and discrete dislocation dynamics simulations KU Leuven
© 2015 Elsevier B.V. Electron channeling contrast imaging under controlled diffraction conditions (cECCI) enables observation of crystal defects, especially dislocations, stacking faults and nano-twins, close to the surface of bulk samples. In this work cECCI has been employed to observe defects around nanoindents into the surface of {100}-, {110}-, {111}-oriented grains in a Fe-22Mn-0.65C (wt%) TWIP steel sample (fcc crystal structure, stacking ...
The stress field of an array of parallel dislocation pile-ups: Implications for grain boundary hardening and excess dislocation distributions KU Leuven
Dislocation pile-ups at grain boundaries determine the back-stress opposing plastic deformation while promoting yielding in neighbouring grains. A regular array of parallel pile-ups of edge dislocations was analysed numerically to determine the equilibrium positions of all dislocations and compared with the result of various simplifications. A model based on infinite low angle boundaries could not reproduce the long-range stress field of the ...
Transfer of molecular dynamics data to dislocation dynamics to assess dislocationU+2013dislocation loop interaction in iron Ghent University
The ESTMJS (European Society of Temporomandibular Joint Surgeons) Consensus and Evidence-Based Recommendations on Management of Condylar Dislocation Vrije Universiteit Brussel KU Leuven
Although condylar dislocation is not uncommon, terminology, diagnostics, and treatment concepts vary considerably worldwide. This study aims to present a consensus recommendation based on systematically reviewed literature and approved by the European Society of TMJ Surgeons (ESTMJS). Based on the template of the evidence-based German guideline (register # 007-063) the ESTMJS members voted on 30 draft recommendations regarding terminology, ...
Quantifying strain and dislocation density at nanocube interfaces after assembly and epitaxy University of Antwerp
Nanoparticle self-assembly and epitaxy are utilized extensively to make 1D and 2D structures with complex shapes. High-resolution transmission electron microscopy (HRTEM) has shown that single-crystalline interfaces can form, but little is known about the strain and dislocations at these interfaces. Such information is critically important for applications: drastically reducing dislocation density was the key breakthrough enabling widespread ...
Traumatic proximal tibiofibular dislocation Ghent University
Traumatic proximal tibiofibular dislocation is a rare injury that is often unrecognized or misdiagnosed at the initial presentation because of a lack of clinical suspicion. When diagnosed, the injury should be promptly reduced. Missed injuries or late presentations are a potential source of chronic morbidity. This article describes the relevant anatomy, classifications, and diagnostic and therapeutic approaches. The authors stress the importance ...
Statistical analysis of dislocation substructure in commercially pure aluminum subjected to static and dynamic high pressure torsion Ghent University
Severe plastic deformation imposed under high hydrostatic pressure introduces a considerable dislocation substructure in metals from the early stages of deformation, ultimately resulting in grain fragmentation. Characterization and quantification of the substructure require methods with a sufficiently high angular and spatial resolution to reveal the local heterogeneities in orientation differences and the length scales of the substructure. ...