It is well known that when coarse-grained metals undergo severe plastic deformation to be transformed into nano-grained metals, their ductility is reduced. However, there are no ductile fracture criteria developed based on grain refinement. In this paper, we propose a new relationship between ductile fracture and grain refinement during deformation, considering factors besides void nucleation a...

The elastic properties and fracture of two-dimensional graphene were calculated purely from the atomic bonding (stretching and bending) based on molecular mechanics method. Considering the representative unit cell of graphene under various loading conditions, the deformations of carbon bonds and the variations of the interlayer distance could be realized numerically under the geometry constrain...

BACKGROUND AND OBJECTIVE Supracondylar fracture of the humerus is the most common elbow fracture in children. This fracture needs immediate diagnosis and treatment, otherwise, it may lead to significant neurovascular and functional problems. The aim of this study was to assess the short term outcome of displaced supracondylar fracture of the humerus in children by open reduction and pining from...

RESULTS: Between 2008 and 2014, 1277 patients presented to the MUHC Level 1 trauma center with a facial fracture, 140 of whom had a frontal sinus fracture and met the inclusion criteria. Mean age was 43.5 years, 90% were male and mean hospitalization time was 16.2 days, including those who required prolonged ICU admissions. Among the patients treated surgically, only 2 required reoperation for ...

Fracture mechanics is a field of solid mechanics interested with the behaviour of materials under certain loads their distribution and finally the fracture criteria of given materials.This Paper evaluates size dependency of fracture parameters, fracture energy (Gf) and fracture process zone effective length (Cf) of concrete concluded as per Bazant’s size effect method. Fracture mechanics standa...

The definition of bone fracture healing onset, progress and extent is a difficult clinical diagnosis. Available criteria of manual stability, X-ray appearance, symptomatic pain and passage of time are indeed valuable, but subjective in nature. This study explores the transmission and comparative measurement of stress wave disturbances across a fracture site as a technique of quantifying the uni...