Pure shear fracture test, as a special mechanical means, had been carried out extensively to obtain the critical information for traditional metallic crystalline materials and rocks, such as the intrinsic deformation behavior and fracture mechanism. However, for bulk metallic glasses (BMGs), the pure shear fracture behaviors have not been investigated systematically due to the lack of a suitabl...

BACKGROUND We characterize in this report the mechanism and type of skull fracture in urban populations of Iran. METHODS Data including the general characteristics, mechanism of trauma, abbreviated injury scale, Glasgow coma scale, duration of hospitalization, and outcome of trauma patients registered from 1999 to 2004 were extracted from the Iranian National Trauma Registry database. RESUL...

Fracture of the patella is a common injury among adults having higher prevalence among males population. The mechanism of injury involves direct and indirect mechanisms. The most common fracture pattern occurring is the transverse fracture followed by comminuted and vertical fractures. Treatment of patellar fractures depends on fracture type, integrity of extensor mechanism and size of fragment...

A typical Iranian carbonate matrix block surrounded by an open fracture was modeled in order to understand the fracture-matrix interaction and realize how to model the interaction best. The modeling was carried out by using a fine-scaled Eclipse model in the single porosity mode (the fractures were explicitly modeled). The model was extended to a stack of 6 matrix blocks to understand block-to-...

Stimulated reservoir volume (SRV) fracturing in tight oil reservoirs often induces complex fracture-network growth, which has a fundamentally different formation mechanism from traditional planar bi-winged fracturing. To reveal the mechanism of fracture network propagation, this paper employs a modified displacement discontinuity method (DDM), mechanical mechanism analysis and initiation and pr...