The influence of the thermal modification process on wood machinability was investigated with four minor species of low economic importance. A set of representative experimental samples was machined to the form of disks with sharp and dull tools. The resulting surface quality was visually evaluated by a team of experts according to the American standard procedure ASTM D-1666-87. The objective q...

The main goals of wire electrical discharge machining (WEDM) manufacturers and users are to achieve a better stability and high productivity of the manufacturing process. The investigation on machinability of Aluminium Matrix Composite (AMC) using Wire-cut Electric Discharge Machining (WEDM) machine is constructed. The aim of this project to determine the most optimum machining parameter that w...

Dense machinable α-SiAlON/BN composites were fabricated by hot-pressing using turbostratic boron nitride (tBN) obtained from nitridation of melamine diborate. The tBN was added to the starting powders, or introduced as a coating that formed in situ on α-Si3N4 carrier powders during nitridation, and was subsequently converted to hexagonal boron nitride (hBN) during hot pressing by solution repre...

bioinert ceramics, like alumina and zirconia are used mainly for replacements of bones, hip joints and for dental implants. partially stabilized zirconia ceramics (psz or tzp with 3 mol.% or 5 wt.% y2o3), appear as perspective bioinert ceramics because of their high strength and corrosion resistance. in order to fabricate complex shapes, it is essential to use a near net shape processing like g...

Fast growing hybrid poplar trees are being plantation grown in the Pacific northwest of the United States and British Columbia for the production of chips for pulp. If allowed to grow somewhat longer (to a rotation age of 9-10 years) and achieve saw log size, the basal log(s) might be used to produce lumber for solid wood products with the remaining stem volume chipped. Solid wood product manuf...

The manufacture of medical and aerospace components made of titanium alloys and other difficult-to-cut materials requires the parallel development of high performance cutting tools coated with materials capable of enhanced tribological and resistance properties. In this matter, a thin nanocomposite film made out of AlCrN (aluminum-chromium-nitride) was studied in this research, showing experime...

Aesthetic character, high strength, chemical durability, and bio-compatibility make dental ceramics ideal ingredients for fabricating dental restoratives. However, the inherent brittleness of ceramics poses a challenge to the machining of ceramic restoratives. With the introduction of Dental CAD/CAM system, machinability evaluation is necessary to successfully fabricate dental ceramics for comm...