Investigation of Deformation Induced Micro to Macro scale Surface Roughness

Experimental Investigation of Relative Permeability Upscaling from the Micro-Scale to the Macro-Scale

An Experimental Investigation on Surface Roughness and Edge Chipping in Micro Ultrasonic Machining

Surface quality including surface roughness and edge chipping is a key process measure in micro ultrasonic machining (Micro-USM) as an efficient process for micromachining of hard and brittle materials. Process parameters such as ultrasonic vibration amplitude, static load, type of tool material, type and size of abrasive particles and slurry concentration can influence the surface quality. How...

An Experimental Investigation on Surface Roughness and Edge Chipping in Micro Ultrasonic Machining

Surface quality including surface roughness and edge chipping is a key process measure in micro ultrasonic machining (Micro-USM) as an efficient process for micromachining of hard and brittle materials. Process parameters such as ultrasonic vibration amplitude, static load, type of tool material, type and size of abrasive particles and slurry concentration can influence the surface quality. How...

Micro-to-Macro: Astrodynamics at Extremes of Length-scale

This paper investigates astrodynamics at extremes of length-scale, ranging from swarms of future ‘smart dust’ devices to the capture and utilisation of small near Earth asteroids. At the smallest length-scales families of orbits are found which balance the energy gain from solar radiation pressure with energy dissipation due to air drag. This results in long orbit lifetimes for high area-to-mas...

Investigation of surface roughness of composite fillings.

Various grinders (diamond and carbide burs, and soflex disks) were used in polishing the composite filling surfaces. Polishing was carried out 10 minutes and 14 days after the material polymerization. The ground surface was then observed by a scanning electron microscope and the surface roughness expressed in [xm. Better surface polish and lower de­ gree of roughness were observed when polishin...