... online February 24, 2015. Editor: Y. Lawrence Yao. 28 12 2011 05 01 2015 24 02 2015 The paper contains an experimental study of microcutting intended to help the optimization of the grinding process of the oxide ceramic CM332 (99.5% Al 2 O 3 ) grinding. The need...

...J. Harris; R. Akarapu; A. E. Segall Despite the many advantages of using lasers for welding ceramics (alumina in particular), cracks induced by the resulting and severe thermal stresses are often detrimental to weld quality and strength. While many factors contribute to the formation...

...Wenqian Hu; Yung C. Shin; Galen B. King Microhole drilling and microstructure machining with a picosecond (ps) Nd : YVO 4 laser (pulse duration of 10 ps) in metals, alloys, and ceramics are reported. Blind and through microholes are drilled by percussion drilling as well as trepanning drilling...

... advantage of the considerable flexibility of 3DP and expedite a new system development. The paper concludes with a demonstration of how the guidance provided is applied in the development of fully dense ceramic dental copings; a research problem uniquely suited to the flexibility of 3DP. 20 10 2008...

...Xinwei Shen; Shuting Lei This study is motivated by the fact that temperature control is very important for the success of laser assisted milling. A transient three-dimensional thermal model is developed using finite element analysis for laser assisted milling (LAMill) of silicon nitride ceramics...

... are predominantly compressive in nature, it is S 11 that mainly contributes to the calculated failure probabilities; S 11 developed in the ceramic plate at a normalized length of cut X cut = 0.9 is shown in Fig. 6 . Surface risks of rupture intensities for the entire domain are shown...

.... The model is fitted to experimental data from two commonly used membrane pore sizes with good agreement. Partial blocking is shown to be a predominant first step in the pore blocking mechanism in microfiltration of semisynthetic MWFs due to the tortuous nature of the pores present in sintered ceramic...

...Yinggang Tian; Benxin Wu; Mark Anderson; Yung C. Shin Laser-assisted machining (LAM) has shown its potential to significantly reduce fabrication costs and improve product quality for advanced materials. While extensive studies have been conducted on laser-assisted turning of various ceramics...

...Raathai Molian; Clayton Neumann; Pranav Shrotriya; Pal Molian Laser and water-jet manufacturing processes are independently used to cut monolithic and composite ceramics. While these processes offer many advantages over diamond sawing and other abrasive processes, the energy efficiency, precision...

...Yinggang Tian; Yung C. Shin A multiscale finite element model is developed to simulate the chip formation in laser-assisted machining of silicon nitride ceramics. To consider the workpiece heterogeneous microstructure and crack evolution in silicon nitride machining, the workpiece material...

... mechanics plates (structures) cantilevers finite element analysis thermal stress cracking laser or saw cutting ceramics premature fracture active stressing fracture One of the major drawbacks of using ceramics is related to the problems associated with their machining...

...Yinggang Tian; Yung C. Shin The feasibility of laser-assisted machining (LAM) and its potential to significantly reduce fabrication costs and improve product quality have been shown experimentally for various ceramic materials. However, no systematical investigation has been performed to expand...

... silicon compounds ceramics cutting tools fibres micromachining punching pressing sheet metal processing materials testing foils scanning electron microscopy Micromachining is one of the most interesting technologies in both the industry and academic societies and is expected to develop...

...Jiann-Cherng Su; Steven Y. Liang; Wang Lin Liu; Tzu Chi Jan Micro- and nanostructured ceramic materials have received increasing attention in light of the attainable mechanical properties of the resulting components, parts, and products. Stirred ball mill grinding is an important process...

...Yue Jiao; W. J. Liu; Z. J. Pei; X. J. Xin; C. Treadwell Rotary ultrasonic machining (RUM) is a relatively low cost and environmentally benign process for machining of advanced ceramics. Much effort has been made to theoretically and experimentally investigate material removal rate, surface...

... in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING . Manuscript received September 2001; Revised October 2002. Associate Editor: S. Kapoor. 01 September 2001 01 October 2002 23 07 2003 boron compounds titanium compounds ceramics chemical vapour infiltration particle reinforced...

...Patrick A. Rebro; Yung C. Shin; Frank P. Incropera The present study focuses on the evaluation of the laser-assisted machining (LAM) of pressureless sintered mullite ceramics. Due to mullite’s low thermal diffusivity and tensile strength, a new method for applying laser power is devised...

...Xianbing Liu; Bi Zhang An abrasive machining process for ceramics is simulated with a nonlinear thermodynamic constitutive model based on the principle of continuum damage mechanics (CDM). The model consists of a set of parallel Maxwell-type elements arranged in series with a spring...

...Marios D. Demetriou; Adrienne S. Lavine; Nasr M. Ghoniem Coated powder particles composed of a ceramic core and a metallic coating are being considered for plasma spray applications. The goal of using these powders is to produce particulate-reinforced metal-matrix composite coatings. In this work...

...S. Lei; Y. C. Shin; F. P. Incropera Laser-assisted machining (LAM) of silicon nitride Si 3 N 4 is evaluated for its potential to become an economically viable process in fabricating precision ceramic parts. On-line measurements of cutting force and workpiece temperature are performed, and tool wear...