scholarly journals Innovative grinding wheel design for cost-effective machining of advanced ceramics

2000 ◽  
Author(s):  
R.H. Licht ◽  
P. Kuo ◽  
S. Liu ◽  
D. Murphy ◽  
J.W. Picone ◽  
...  
Keyword(s):  
Cost Effective ◽  
Grinding Wheel ◽  
Advanced Ceramics ◽  
Design For Cost

Development of Vitrified Bond CBN Wheel for Internal Precision Grinding of the Air-Conditioner Compressor Piston Hole

2006 ◽  
Vol 304-305 ◽  
pp. 29-32 ◽  
Author(s):  
Hang Gao ◽  
Y.G. Zheng ◽  
W.G. Liu ◽  
Jian Hui Li
Keyword(s):  
Cost Effective ◽  
Grinding Wheel ◽  
Manufacturing Cost ◽  
Air Conditioner ◽  
Grinding Wheels ◽  
Precision Grinding ◽  
Grinding Performance ◽  
Compressor Piston ◽  
Vitrified Bond ◽  
Cbn Grinding Wheel

Manufacturing of vitrified bond CBN wheels for internal precision grinding of the air-conditioner compressor piston hole is still big challenge to all of the domestic manufacturers. Recently, by choosing pre-melting mixed CBN abrasives and a proper sintering process, a cost-effective method was conceived to produce grinding wheels of comparative quality. The grinding performance of wheels was evaluated with a series of internal precision grinding of compressor piston hole. Experimental results show that the vitrified bond CBN grinding wheel produced by this method has better grinding performance, and can be substitute to the same type of grinding wheels imported. But the manufacturing cost is only 60% of the wheel imported according to estimation.

Finite Element Simulation of Rotary Ultrasonic Machining for Advanced Ceramics

2004 ◽  
Author(s):  
Zhichao Li ◽  
Liang-Wu Cai ◽  
Z. J. Pei ◽  
Clyde Treadwell
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Three Dimensional ◽  
Cost Effective ◽  
Element Model ◽  
Machining Process ◽  
Bottom Surface ◽  
Ultrasonic Machining ◽  
Rotary Ultrasonic Machining ◽  
Advanced Ceramics

Rotary ultrasonic machining (RUM), a hybrid machining process that combines diamond grinding and ultrasonic machining, has been utilized as a cost-effective material removal method for hard-to-machine materials such as advanced ceramics. In this study, the stress and deformation fields in a ceramic workpiece (92% Al2O3) and the formation of edge chipping during RUM process are investigated using finite element method. Based on a simplified model of RUM process, a three-dimensional finite element model is constructed using axisymmetric eight-node quadrilateral element. In the finite element model, the areas of the workpiece bottom surface that are in contact with the fixture are defined as boundaries of zero displacement in normal direction. A static load is applied to the cutting zone, which is the contact area between the tool’s end face and the bottom surface of the machined slot in the workpiece. The value of the load is calculated from experimental measurements using a dynamometer. Using this model, the maximum von Mises stresses are computed. Initiation and location of the crack, which leads to chipping in RUM process, are also analyzed and compared with experimental results observed under a microscope.

scholarly journals EASY: An Innovative Design for Cost Effective Heliostats/Solar Fields

2014 ◽  
Vol 49 ◽  
pp. 174-183 ◽  
Author(s):  
A. Monreal ◽  
M. Burisch ◽  
M. Sanchez ◽  
D. Pérez ◽  
C. Villasante ◽  
...  
Keyword(s):  
Cost Effective ◽  
Innovative Design ◽  
Design For Cost

Experimental Investigation of Tool Wear in Rotary Ultrasonic Machining of Alumina

2009 ◽  
Vol 416 ◽  
pp. 182-186 ◽  
Author(s):  
Wei Ming Zeng ◽  
Xi Peng Xu ◽  
Zhi Jian Pei
Keyword(s):  
Experimental Investigation ◽  
Tool Wear ◽  
Cost Effective ◽  
Ultrasonic Machining ◽  
Rotary Ultrasonic Machining ◽  
Advanced Ceramics ◽  
Time In Literature ◽  
The Cost ◽  
First Time ◽  
Practical Implications

As one of the cost-effective machining methods for advanced ceramics, rotary ultrasonic machining (RUM) has attracted much attention and there exist numerous publications on the process. However, few investigations on tool wear in the RUM process have been reported. This paper, for the first time in literature, presents an experimental observation on tool wear in RUM of alumina. it presents and discusses the results on tool wear in RUM of alumina. It also discusses some practical implications of the findings from this study.

scholarly journals Traffic study and flyover design for Burij Al-Sahwa roundabout using Building Information Modelling (BIM).

2020 ◽  
Author(s):  
Tahani Al-Duhani ◽  
Ram Manchiryala
Keyword(s):  
Traffic Congestion ◽  
Cost Effective ◽  
Urban Region ◽  
Vehicle Ownership ◽  
Rapid Population Growth ◽  
Building Information Modelling ◽  
Information Modelling ◽  
Building Information ◽  
Design For Cost ◽  
The City

Due to the increase in the attraction of human activities and the increase in the rapid population growth into the urban region, which in turn leads to the growth of vehicle ownership, increase the daily trips and use which results in traffic congestion in the major roundabouts of the city. The aim of this project is analyzing the current situation of traffic in Burj Al-Sahwa roundabout using Building Information Modelling (BIM). Where, BIM software can conduct simulations and analysis to enhance the design for, cost-effective, energy-efficient, sustainable and practicable products as well as faster and more effective. In this project, traffic congestion in Burj Al-Sahwa roundabout, has been collected by using traditional through manual spot counting of vehicles, to evaluate roundabout performance. The outcome of this project found that there is increasing in the traffic in the peak hour between 7 Am to 8 Am on Nizwa road. In that case, the suitable solutions to manage the traffic flow are the design of the flyover and design Signals in roundabout under the flyover.  

scholarly journals Halloysite in Different Ceramic Products: A Review

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5501
Author(s):  
Paraskevi Lampropoulou ◽  
Dimitrios Papoulis
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Cost Effective ◽  
Ceramic Materials ◽  
Ceramic Composites ◽  
Halloysite Nanotubes ◽  
Way Of Life ◽  
Advanced Ceramics ◽  
Effective Technology ◽  
Traditional Ceramics

The increased demands of our rapidly developing way of life lead to the broadening of the ceramic market among other effects. Due to the advanced ceramic properties of halloysite and its abundance, combined with its good synergistic effect with other materials, it has been investigated for multifarious possible applications to produce traditional and advanced ceramics as well as ceramic composites. In this review, a substantial number of studies by several investigators into halloysite-based ceramics were are summarized. The possibilities and limitations of different halloysite-based ceramic materials for future applications are also discussed in this manuscript and new fields of research are proposed. The summarization of published results indicates a constant scientific interest in halloysite-based traditional ceramics and new potential uses in the future. Additionally, investigations on different novel ceramic composites with low cost halloysite nanotubes (HNTS) have rapidly increased, covering different scientific and technological areas. On the other hand, research into advanced ceramics (SiAlONS) has been pursued due to its highly cost effective technology treatments on a large scale.

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