Environmental friendly cutting fluids and cooling techniques in machining: a review

Atmospheric-pressure plasmas (APPs) have attracted great interest and have been widely applied in biomedical applications, as due to their non-thermal and reactive properties, they interact with living tissues, cells and bacteria. Various types of plasma sources generated at atmospheric pressure have been developed to achieve better performance in specific applications. This article presents an overview of the general characteristics of APPs and a brief summary of their biomedical applications, and reviews a wide range of these sources developed for biomedical applications. The plasma sources are classified according to their power sources and cover a wide frequency spectrum from dc to microwaves. The configurations and characteristics of plasma sources are outlined and their biomedical applications are presented.

https://iopscience.iop.org/article/10.1088/0963-0252/21/4/043001/pdf

Atmospheric-pressure plasma sources for biomedical applications

The generalization of the Local Density Approximation (LDA) method for the systems with strong Coulomb correlations is presented which gives a correct description of the Mott insulators. The LDA+U method is based on the model hamiltonian approach and allows to take into account the non-sphericity of the Coulomb and exchange interactions. parameters. Orbital-dependent LDA+U potential gives correct orbital polarization and corresponding Jahn-Teller distortion. To calculate the spectra of the strongly correlated systems the impurity Anderson model should be solved with a many-electron trial wave function. All parameters of the many-electron hamiltonian are taken from LDA+U calculations. The method was applied to NiO and has shown good agreement with experimental photoemission spectra and with the oxygen Kα X-ray emission spectrum.

http://absimage.aps.org/image/MAR06/MWS_MAR06-2005-007233.pdf

First-principles calculations of electronic structure and spectra of strongly correlated systems: the LDA+U method

Study on microstructure, mechanical properties and machinability of efficiently additive manufactured AISI 316L stainless steel by high-power direct laser deposition

Aluminum Metal Matrix Composites (MMCs) sought over other conventional materials in the field of aerospace, automotive and marine applications owing to their excellent improved properties. These materials are of much interest to the researchers from few decades. These composites initially replaced Cast Iron and Bronze alloys but owing to their poor wear and seizure resistance, they were subjected to many experiments and the wear behavior of these composites were explored to a maximum extent and were reported by number of research scholars for the past 25 years. In this paper an attempt has been made to consolidate some of the aspects of mechanical and wear behavior of Al-MMCs and the prediction of the Mechanical and Tribological properties of Aluminum MMCs.

/pdf/mechanical-and-tribological-behavior-of-particulate-4x05huiioi.pdf

Mechanical and Tribological Behavior of Particulate Reinforced Aluminum Metal Matrix Composites – a review

A study on the development of a composite ceramic tool ZrO2/(W, Ti)C and its cutting performance

Towards metamaterial rods with amplitude-dependent band gaps: A superelastic alloy-based approach

NiTi shape memory alloy products are becoming more and more popular in many areas. But owing to the unique characteristics of NiTi shape memory alloys, it is still considered restrictive by the traditional machining methods of producing NiTi shape memory alloys for finished products. Flood coolant and cryogenic with liquid nitrogen (LN2)–assisted machining is desired to improve machinability of material in the turning procedure. Experiments were conducted to examine the influence of cooling conditions (dry, flood, and cryogenic LN2) on turning NiTi shape memory alloys at different cutting speeds. Tool wear, cutting force, and surface integrity were selected as evaluation characteristics to explore the effects of different cooling methods and the stress-induced martensitic phase during the turning process. The study shows that the appearance of the stress-induced martensitic phase during the turning process harms the machinability of NiTi shape memory alloys. Flood conditions accomplish lower tool wear and cutting force at 15 m/min. Cryogenic conditions achieve higher machinability at 125 m/min.

Investigation on machinability of NiTi shape memory alloys under different cooling conditions

Compressive behavior and vibration-damping properties of porous Ti-6Al-4V alloy manufactured by laser powder bed fusion

Materials sandwiches of aluminium/titanium are widely used in structural aerospace, especially in the surface coating and skeletons of aircrafts. Due to their inhomogeneous behavior and poor machin...

Jie Sun

Papers

A study on the development of a composite ceramic tool ZrO2/(W, Ti)C and its cutting performance

Towards metamaterial rods with amplitude-dependent band gaps: A superelastic alloy-based approach

Investigation on machinability of NiTi shape memory alloys under different cooling conditions

Compressive behavior and vibration-damping properties of porous Ti-6Al-4V alloy manufactured by laser powder bed fusion

Investigation on performance characteristics and metallographic transformation on drilling aluminium/titanium sandwich: