Abstract. The distribution of internal shear stresses in a 2D dislocation system is investigated when external shear stress is applied. This problem serves as a natural continuation of the previous work of Csikor and Groma (Csikor F F and Groma I 2004 Phys. Rev. B 58 2969), where analytical result was given for the stress distribution function at zero applied stress. First, the internal stress ...

Abstract The work is devoted to FSW of cold rolled AA2519. non-uniform distribution all second phase precipitates (including coherent θ″ and non-coherent θ) was shown via the TEM-technique. nucleation stable θ-phase, along with decreased dislocation density, led a drop (∼60 HV 0.2 ) in microhardness nugget zone.

BACKGROUND The Oxford Unicompartmental Knee Replacement (OUKR) uses a mobile bearing to minimise wear. Bearing dislocation is a problem in the lateral compartment as the ligaments are loose in flexion. A domed tibial component has been introduced to minimise the risk of dislocation, yet they still occur, particularly medially. The aim of this mechanical study was to compare the domed and flat t...

An analytical solution is presented for the thermoelastic problem of a half-plane with several cracks under thermo mechanical loading using distributed dislocation technique. The uncoupled quasi-static linear thermoelasticity theory is adopted in which the change in temperature, if any, due to deformations is neglected. The stress field in a half-plane containing thermoelastic dislocation is ob...

Acromioclavicular (AC) joint injuries are common and often seen in contact athletes, resulting from a fall on the shouldertip with adducted arm. This joint is stabilized by both static and dynamic structures including the coracoclavicular (CC)ligament. Most reconstruction techniques focus on CC ligament augmentation as the primary stabilizer of the AC joint.The best surgical technique for some ...

The cause of dislocation of an intraocular lens is a direct blow or jerk, and dislocation may complicate both iris-supported and capsule-supported lenses. In capsule-supported lenses the implant dislocates towards the anterior chamber but in iris-supported lenses the dislocation is posterior. A technique for removal of a posterity dislocated lens is described.

This paper presents an analytical solution for an orthotropic circular cross section bar with a magnetic coating weakened by multiple arbitrary oriented cracks under Saint-Venant torsion by means of the distributed dislocation technique. At first, the solution of the orthotropic bar with a magnetic coating weakened by a Volterra-type screw dislocation is achieved with the aid of the finite Four...

Different types of dislocation bundles were identified in the (001) GaAs substrates of III–V heterostructures. Comparisons of scanning infrared polariscopy images and X-ray transmission topograms showed a one to one correlation of stripes of reduced residual shear strain and dislocation bundles of the majority type. Visible-light interferometry and Makyoh topography, on the other hand, showed a...