Recent advances in plasticity applications in metal machining: slip-line models for machining with rounded cutting edge restricted contact grooved tools

Author(s):  
Xiqun Wang ◽  
I.S. Jawahir
Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 580
Author(s):  
Francisco J. G. Silva

Though new manufacturing processes that revolutionize the landscape regarding the rapid manufacture of parts have recently emerged, the machining process remains alive and up-to-date in this context, always presenting itself as a manufacturing process with several variants and allowing for high dimensional accuracy and high levels of surface finish [...]


Author(s):  
Yigˇit Karpat ◽  
Tugˇrul O¨zel

Analysis of tool-chip friction for tools with edge design in metal cutting helps to understand the complex material behavior around the cutting edge of the tool. The results of this analysis can be used to identify optimum tool edge design to achieve the most desirable machining performance. In this study, slip-line field analysis approach is used to investigate the average friction factor at the tool-chip interface and the dead metal zone phenomenon in orthogonal cutting for chamfered and honed tools. In an experimental set-up, an orthogonal cutting test of AISI 4340 steel is performed. Measured forces are utilized in identifying the friction factors at the tool-interface for both chamfered and honed tools for varying feed rates. Comparison of predicted and measured forces indicates good agreements. The results of this study can be utilized in designing friction at tool-chip interface for Finite Element simulations of machining with edge design tools. This study can also be extended to waterfall hone tools to identify the most optimum cutting edge geometry.


Molecules ◽  
2021 ◽  
Vol 26 (9) ◽  
pp. 2589
Author(s):  
Burgert Blom ◽  
Erika Ferrari ◽  
Vassilis Tangoulis ◽  
Cédric R. Mayer ◽  
Axel Klein ◽  
...  

Celebrating the “25th Anniversary of Molecules” with a Special Issue dedicated to “Recent Advances in Inorganic Chemistry” strengthens the renewed role that inorganic chemistry, one of the oldest chemistry divisions, has lately earned thanks to cutting-edge perspectives and interdisciplinary applications, eventually receiving the veneration and respect which its age might require [...]


2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Jason Toncic

Recent advances in science and engineering have facilitated the development of artificial intelligence voice assistants. While this is true from a technical aspect, smart speakers and voice assistants did not develop in isolation from the rest of human society. The devices may be new, but the practices and patterns in their development and use are not. Using Lévi-Strauss’s structural anthropology, I map homologous practices of smart speaker interaction onto historical conceptions of supernatural magic use. This structural comparison suggests that practices and patterns that were essential to magic use have re-emerged in smart speaker utilization in similar forms. Some of these practices are noteworthy for their homology alone. However, other homologous behaviors revive patterns of inequity that, in Western magical traditions, had privileged the traditionally educated man. The goal of this paper is to elucidate the ghost in the machine: the prejudiced social practices of supernatural magic that were asserted to be eradicated yet which are now, nevertheless, newly instantiated within our most cutting-edge devices.


2021 ◽  
Author(s):  
Bin Huang ◽  
Lijun Mao ◽  
Xueliang Shi ◽  
Hai-Bo Yang

Supramolecular radical chemistry has been emerging as a cutting-edge interdisciplinary field of traditional supramolecular chemistry and radical chemistry in recent years. The purpose of such fundamental research field is to...


Metals ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 1053 ◽  
Author(s):  
Badis Haddag

Metal machining involves severe loading in the cutting zone. [...]


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