OBJECTIVE To date, no prospective comparative study of the diagnostic value of STIR versus T1-weighted (T1w) sequences at both 1.5 T and 3 T has been performed with special focus on the detectability of bone metastases. MATERIALS AND METHODS 212 oncological patients had a whole-body MRI at 1.5 T and/or at 3 T. The standard protocol comprised STIR and T1w sequences. All patients who showed typ...

AZ91D magnesium composites reinforced by Ti3SiC2 MAX phase were fabricated the stir casting technique. Tensile tests reveal that effects of and Ti2AlC on Mg matrix are different. Unlike Ti2AlC-AZ91D composite for which delamination happens during fracture, Ti3SiC2-AZ91D fractures interfacial debonding mechanisms. Transmission electron microscopy characterization shows few nanometric grains form...

The abrasive characteristics of LM6 alloys are difficult to machine, so designing a technology that allows for effective machining is essential. This paper aims evaluate the effect process variables, namely feed rate, spindle speed and drill material, towards responses like Thrust force, Surface roughness burr height when drilling alloy. aluminium alloy was fabricated by stir casting process. E...

Aluminium metal matrix composites (AMMCs) gained an extensive popularity in different engineering fields monotonically due to their enhanced mechanical properties when compared traditional monolithic metals. In the present investigation were produced using liquid metallurgy technique with modified stir casting approach bottom pouring arrangement. Al 2214 aluminium have been successfully prepare...

Metal matrix composite materials are used in several industrial applications due to its improved specifi c strength, capacity, good wear resistance, and high modulus so on. In this work, the Aluminium alloy Al6061 is as 15% of volume fraction silicon carbide reinforcing element fabricate a MMC by stir casting process. The turning process parameters metal (AMMC) considered work cutting speed, fe...

Friction stir processing (FSP) has been developed on the principles of friction stir welding (FSW) as an effective and efficien new method for grain refinement and microstructural modification, providing intense plastic deformation as well as higher strain rates than other conventional severe plastic deformation methods. FSP produces an equiaxed homogeneous microstructure consisting of fine gra...

This paper gives a review on the applications of artificial neural network in friction stir welding. Friction stir welding is a fairly new solid state joining process and has found numerous applications including in aerospace, marine, automotive, railway and many more. Artificial neural network (ANN) is a valued research area. Study has been done on mechanical properties of weldements. Keywords...

We report the design, fabrication, and testing results of a micro magnetic stir-bar monolithically integrated in Parylene surface-micromachined channels with small tip-tochannel clearance. We demonstrated two applications of such stir bars: mixing and pumping.

Lightweight structural materials are increasingly sought after in the automotive and aerospace industries for their potential to improve fuel efficiency. Magnesium-based metal-matrix composites candidates these kinds of applications. The use recycled carbon fibres offers further energy cost savings. fibre were manufactured by stir casting with high-dispersion shearing, then extruded subsequentl...