It is well established that pad conditioning facilitates polish rate stability in chemicalmechanical polishing (CMP) of interlayer dielectic (ILD) silicon dioxide films and that in the absence of conditioning, polish rates decay over time [Stein et al., Lawing]. ILD rate decay is also associated with changes in pad surface morphology [Lawing, Kojima et al.]. In [Lawing], it was found that the p...

Intelligent knowledge based system (IKBS) is developed for optimizing dry CNC turning process using Taguchi method, CNC Machine, EN19 steel as the work piece material, andCutting Insert. Tool wear and spindle loading which are the machining parameters, spindle speed, feed rate, and depth of cut, areoptimized through the intelligent knowledge based system (IKBS). The experimental CNC turning mac...

We report the development of a predictive model based on artificial neural network (ANN) for the estimation of flank and nose wear of uncoated carbide inserts during orthogonal turning of NST (Nigerian steel) 37.2. Turning experiments were conducted at different cutting conditions on a M300 Harrison lathe using Sandvic Coromant uncoated carbide inserts with ISO designations SNMA 120406 using fu...

When the re:fiigerant R l34a is mixed with an ester oil and usea m compressor bearing lubrication, no EP action is experienced. The refrigerant contains no chlorine and the lubricant additives can not be chemically active like normal EP additives, not to deposit in and destroy the heat excha..>Jgers. The iubricant film thickness thus needs to be considerably larger for an Rl34a compressor beari...

Artificially fabricated surface textures can significantly improve the friction and wear resistance of a tribological contact. Recently, this surface texturing technique has been applied to polymer materials to improve their tribological performance. However, the wear behavior of textured tribo-pairs made of steel and polymer materials has been less thoroughly investigated and is not well under...

THE ATTRITIOUS AND FRACTURE WEAR OF GRINDING WHEELS by Stephen Malkin Submitted to the Department of Mechanical Engineering February 1968, in partial fulfillment of the requirements for the degree of Doctor of Science A detailed investigation is made of the nature and extent-of grinding wheel wear in finish grinding. The wear is broadly classified as either attritious or fracture wear. Attritio...

A new prediction method was proposed based on the positive feedback relationship between tool geometry and wear rate. Dry orthogonal cutting of Inconel 718 used as a case study. Firstly, rate models flowchart were proposed. Secondly, evolution during analyzed considering combined effect crater flank wear. Thirdly, temperature, normal stress tool–chip relative sliding velocity surface studied, r...

Cross-linked polyethylenes are being marketed by orthopaedic manufacturers to address the problem of osteolysis caused by polyethylene particulate wear debris. Wear testing of these cross-linked polyethylenes in hip simulators has shown dramatic reduction in wear rate compared with standard ultrahigh molecular weight polyethylene, either gamma irradiated in air or nitrogen - or ethylene oxide-s...

This work aims at investigating experimentally fretting corrosion, that is, corrosion induced by friction of AISI 316L SS against poly(methyl methacrylate) under small displacements, and subsequently using the data to model wear. The observed wear on the stainless steel has been modeled using the Point Defect Model (PDM). The originality of this approach in applying the PDM to fretting corrosio...