In this paper a documentation was made to highlight the characteristics obtained on surface modifications by means of Cold Spray, using different powders based tungsten carbide (WC) and agglomerated with nickel, sprayed materials, as well possibility 52100 steel, which is often used in manufacture rolling bearings has acquired high performances both terms wear fatigue resistance due alloying ch...

This paper presents an introductory overview and tutorial in simulation modeling and control of serial Kanban and CONWIP (CONstant Work In Process) pull systems using ARENA/SIMAN 3.5/4.0. Card level estimation is discussed for both types of pull systems, and a heuristic method to adjust card levels controlling system WIP (Work In Process) is provided. The objective is to present a tutorial for ...

Background The ability of T2* cardiovascular magnetic resonance (CMR) to identify cardiac iron loading has facilitated a dramatic reduction in mortality in patients with iron overload. There remains a worldwide need for improved access to iron evaluation. One route to achieving this would be simple in-line T2* analysis. We compared our validated T2* methods which use Royal Brompton Hospital (RB...

Present study compares performance of proposed model [Hybrid Extended Kanban Control System (HEKCS)], with Extended Kanban Control System (EKCS) and Constant Work In Process (CONWIP) in a single line and multi stage manufacturing system with or without effect of machine breakdown. It was observed that, when demand rate increases, throughput, average WIP and utilization% also gradually increases...

Two distinct isotopy-isomorphy conditions, different from those of J. M. Osborn and Wilson’s condition, for a weak inverse property loop(WIPL) are shown. Only one of them characterizes isotopy-isomorphy in WIPLs while the other is just a sufficient condition for isotopy-isomorphy. Under the sufficient condition called the T condition, Artzy’s result that isotopic cross inverse property loops(CI...

Semiconductor wafer fabrication is perhaps one of the most complex manufacturing processes found today. In this paper, we construct a simulation model of part of a wafer fab using ProModel software and analyze the effect of different input variables on selected parameters, such as cycle time, WIP level and equipment utilization rates. These input variables include arrival distribution, batch si...

In this paper we present CONLOAD CONstant LOAD a new lot release rule for wafer fabs It was developed to overcome some performance problems of traditional lot release rules like CONWIP or Work load Regulation during product mix changes We show that CONLOAD outperforms CONWIP and Workload Regulation with respect to keeping the bot tleneck utilization at a desired level and to provide a smooth ev...