The main aim of this research was to find the mechanism for the failure of the CoCrMo porous nano-composite by characterizing microstructural changes and fractured surface after compression test. For this purpose, porous nano-composites were prepared with the addition of bioactive glass nano-powder to Co-base alloy with 22.5% porosity by the combination of space-holder and powder metallurgy tec...

The study of mechanical behavior of the structural steel S400 under quasi- static and dynamic loading has been the subject of this investigation. In oder to obtain different stress - triaxiality conditions the specimens were notched with 1, 1.5, 2 and 3.5 mm notch radius. The results of fractography show as the velocity of tension increases, ductility reduces and a ductile-brittle transition oc...

Patellar fracture is a relatively uncommon fracture especially the vertical sagittal type. In cases of high energy trauma injury, it is usually associated with fracture of ipsilateral distal femur or proximal tibia. However, the combination of vertical sagittal fracture patella and ipsilateral fracture lateral condyle is very rare. This necessitates judicious diagnosis and appropriate managemen...

conclusions stability of the clavicle is crucial for shoulder function and care should be taken not to miss or underestimate segmental bipolar fractures even with a low energy mechanism. authors believe that operative treatment should be taken into consideration for displaced fractures. introduction clavicle fractures are very common, accounting for approximately 4% of all adult fractures. segm...

The present study investigates the failure mechanisms of industrial fiber materials 13 a custom designed fiber cutting performance test bench. The fracture morpholog 14 fibers are examined by scanning electron microscopy. The analysis reveals that fiber cutting can be 15 distinguished according to four distinct stages of fiber failure represented by shearing, cutting, 16 brittle fracture, and t...