Magnetorheological fluid behavior under constant shear rates and high magnetic fields over long time periods

Article Abstract:

A new magnetorheological (MR) cell designs is presented along with a study of the magnetic field, shear rate, and time/shear strain influences on the properties and the behavior of MR fluid tested for long periods of time is presented. The rheological measurements indicated that over time the fluid's shear stress magnitude decreases until it reaches a steady state.

Analysis, Magnetic fields, Rheology

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Effects of CO2 laser surface processing on fracture behavior of silicon nitride ceramic

Article Abstract:

Surface defects generated by grinding deteriorate the flexural strength of the silicon nitride (Si3N4) ceramic. CO2 laser surface processing was applied to eliminate the grinding-induced defects and was concluded that laser surface processing had significant effects on fracture behavior of flexure silicon nitride samples.

Pottery, Ceramics, and Plumbing Fixture Manufacturing, Pottery and Related Products, Silicon Nitride Ceramics, Methods, Usage, Grinding and polishing, Grinding (Metal finishing), Surface preparation, Carbon dioxide lasers

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Tribological behavior of aligned single-walled carbon nanotubes

Article Abstract:

Tribology is related to the adhesion and friction between two material surfaces brought into contact. The possibility of unusual tribological actions for two surfaces covered with aligned single-walled carbon nanotubes is studied.

Measurement, Friction materials, Nanotubes

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