Cardiac MR group Lund, Dept. of Clinical Physiology, Lund University, Lund, Sweden Full list of author information is available at the end of the article Figure 1 Design and construction of the vortex ring flow phantom. a) 2D view of the flow rectifier and vortex ring tank. All measures are in millimeters (mm). b) 3D view of the flow rectifier and vortex ring tank. c) Pump design. A servo motor...

OBJECTIVES Metal-on-metal (MoM) hip resurfacing was introduced into clinical practice because it was perceived to be a better alternative to conventional total hip replacement for young and active patients. However, an increasing number of reports of complications have arisen focusing on design and orientation of the components, the generation of metallic wear particles and serum levels of meta...

In this paper, an attempt has been made to characterize the surface texture generated, during Magnetic Field Assisted Abrasive Finishing (MFAAF) of SS316L material. The changes in surface texture generated are studied by using surface roughness profiler, Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM). The deep cutting marks left by grinding process have been removed and re...

lapping is one of the most important polishing processes which can be used to fabricate flat and smooth surfaces. in this paper, the effect of lapping characteristics and mesh number of abrasive particles are studied on the surface roughness and flatness for the machining of hardened aisi 52100 rings. the most significant lapping characteristics are pressure, lap plate speed and time. scanning ...

Abrasive blasting involves forcefully projecting a stream of abrasive particles onto a surface, usually with compressed air or steam. Since silica sand is commonly used in this process, workers who perform abrasive blasting are often called sandblasters. A material with rough particles should be used in order to have a sufficient effect on resistant surfaces such as glass or metal. Mostly quart...

Chemical–mechanical polishing (CMP) is a planarization process that utilizes chemical reactions and mechanical material removal using abrasive particles. With the increasing integration of semiconductor devices, CMP gaining importance in manufacturing. Abrasive-free (AF-CMP) uses solutions do not contain particles to reduce scratches improve capabilities. However, because AF-CMP does use for re...

Purpose. Solving the problem of increasing pumping equipment operational lifetime when pumping-out contaminated groundwater in iron-ore industry by extracting hard, abrasive part, using magnetic filters based on permanent ferrite magnets. Methods. To produce spherical hard-magnetic elements that catch finely-dispersed and weakly-magnetic particles industry, barium powder BaО∙6Fe2O3 is applied, ...

A magnetic abrasive finishing process using an alternating field is proposed for the of complex surfaces. In field, periodic changes in current will cause cluster used as a brush to fluctuate, which not only continuously replace particles contact with workpiece, but also periodically adjust shape better fit surface workpiece. this paper, influence combination and static fields on area analyzed....