Article
Engineering, Mechanical
Anshuman Kumar Sahu, Siba Sankar Mahapatra
Summary: Composite tools made of copper, tungsten and boron carbide were prepared through powder metallurgy and their performance during machining of titanium alloy work piece was studied. The results showed that the PM tools exhibited similar performance as solid copper tool in terms of MRR, TWR and surface integrity.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2021)
Article
Engineering, Multidisciplinary
Phan Huu Nguyen, T. Muthuramalingam, Dong Van Pham, Shailesh Shirguppikar, Tung Nhu Nguyen, Tam Chi Nguyen, Ly Trong Nguyen
Summary: In this study, the process parameters for machining titanium alloy specimens with tungsten carbide using micro EDM were optimized using the Taguchi-Topsis method. It was found that specific combinations of voltage, capacitance, and electrode speed resulted in better machinability and surface finish.
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES
(2022)
Review
Materials Science, Multidisciplinary
Xuyang Zhu, Guangxian Li, John Mo, Songlin Ding
Summary: This paper reviewed the state-of-the-art technologies applied in machining semiconductors, summarized the advantages and disadvantages of each method, introduced the latest research outcomes, and discussed the future development trend.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
N. C. Zoita, M. Dinu, A. E. Kiss, C. Logofatu, M. Braic
Summary: The hybrid DCMS / HiPIMS method was found to improve the structural and electrical properties of TiC thin films compared to the films grown using R-DCMS, with the former exhibiting better resistivity values.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Multidisciplinary
Wahyudiono, Hiroki Kondo, Siti Machmudah, Hideki Kanda, Yaping Zhao, Motonobu Goto
Summary: The study demonstrated the utilization of an electric field generated by high voltage discharge plasma over a liquid water surface containing glycine compound to synthesize TiO2 nanoparticles. The applied voltages, pulse numbers, and repetition rates significantly influenced the decomposition reaction of glycine compounds and electrode erosion. The UV-vis spectra and HRTEM images confirmed the formation of TiO2 nanoparticles and TiC as nanoparticle products, suggesting that this process has potential for advanced nanoparticle synthesis technology.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Deepak Doreswamy, Anupkumar M. Bongale, Marcin Piekarski, Arunkumar Bongale, Satish Kumar, Danil Yurievich Pimenov, Khaled Giasin, Krzysztof Nadolny
Summary: The study focused on improving the mechanical, physical and interfacial properties of aluminum alloys by adding silicon carbide particles and investigating the machinability of the composite using wire-EDM. The optimized wire-EDM settings resulted in MRR of 65.21mg/min and 62.41mg/min for samples with 4% and 8% SiCp, while the influence of reinforcing SiCp up to 8% on MRR was marginal. The statistical model developed for predicting MRR using linear regression showed a predicting accuracy of 73.65% and can be useful for predicting MRR for different process parameter settings.
Article
Automation & Control Systems
Nguyen Huu Phan, Pham Van Dong, Hoang Tien Dung, Nguyen Van Thien, T. Muthuramalingam, Shailesh Shirguppikar, Nguyen Chi Tam, Nguyen Trong Ly
Summary: This study experimentally determined the optimal technological parameters for EDM using an AlCrNi coated electrode, resulting in better surface quality and higher machining efficiency.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Ching Yee Yap, Pay Jun Liew, Intan Sharhida Binti Othman, Mohd Fadzli Bin Abdollah, Jiwang Yan
Summary: A coating layer was formed on a WC-Co substrate surface using electrical discharge coating with waste quarry dust powder suspension. The coating significantly increased micro-hardness and reduced surface roughness, coefficient of friction, and wear weight loss, demonstrating good wear resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Optics
Dariusz Bartkowski, Aneta Bartkowska, Peter Jurci
Summary: The study investigated the effect of different laser beam power values and powder feeding rates on properties of Fe/WC metal matrix composite coatings produced by laser cladding. Coatings produced at a powder feeding rate of 12.50 g/min showed the highest microhardness and corrosion resistance.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Automation & Control Systems
Linglei Kong, Weining Lei, Jinjin Han, Qing He, Qilin Li, Zhang Suorong, Xiangzhi Wang, Zhidong Liu
Summary: This article analyzes the oxidation characteristics and structural characteristics of the oxide layer formed on the surface of titanium alloy, reveals the reasons for the combustion and explosion phenomena during titanium alloy machining, and proposes a mixed-gas electrical discharge ablation processing method to avoid explosions.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Automation & Control Systems
Ming Zhou, Tianshang Hu, Xin Mu, Meng Zhao, Jianwei Yang, Qing Ye, Pei Xu, Lei Yang, Fangqing Xin
Summary: To solve the difficulties of EDM machining of titanium alloys, a multivariable adaptive control system was proposed in this study. This system regulated variables such as gap voltage, electrode-discharging time, and pulse-off time to maintain suitable liquid breakdown strength for effective discharges and prevent arcing during machining. Verification tests showed that this control system was effective in severe machining situations and proved its usefulness in practical applications.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
E. Popov, L. Slavov, E. Demir, B. A. Abdurakhimov, A. S. Doroshkevich, O. A. Aliyev, S. H. Jabarov, A. H. Valizade, B. Mauyey, P. Horodek, K. Siemek, O. Samedov, M. N. Mirzayev
Summary: In this study, titanium carbide nano powders were irradiated with different fluencies of fast neutrons. The microstructure of the irradiated powders was analyzed using various methods, such as X-ray diffraction, Raman spectroscopy, and FTIR spectroscopic analysis. The results showed that there was no significant phase transition or amorphization in the irradiated TiC nano powders. However, the water molecules absorbed on the material surface were disintegrated under the influence of fast neutrons. Morphological analysis also confirmed the exceptional structural stability of titanium carbide to neutron irradiation.
Article
Engineering, Mechanical
Sitki Akincioglu
Summary: Electrical discharge machining (EDM) was used to experiment with Titanium (Gr2) alloy, and the effects of different parameters on performance characteristics were analyzed using the Taguchi method and variance analysis. The results showed that under specific parameter conditions, better surface quality can be achieved.
FACTA UNIVERSITATIS-SERIES MECHANICAL ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
Seungchan Cho, Junghwan Kim, Ilguk Jo, Jae Hyun Park, Jaekwang Lee, Hyun-Uk Hong, Bong Ho Lee, Wook Ryol Hwang, Dong-Woo Suh, Sang-Kwan Lee, Sang-Bok Lee
Summary: This study investigates the effect of molybdenum (Mo) atoms on the interfacial properties of TiC-Fe composite. The results show that the mechanical strength of the composite is significantly enhanced by the addition of Mo, which is attributed to the formation of a stable MoC-like interphase at the interface.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Engineering, Mechanical
Ilangovan Arun, C. Yuvaraj, A. Sivakumar, S. Thamizhmanii
Summary: In this study, Electric Discharge Alloying/Coating (EDA/C) was used to create a metal matrix composite coating on duplex stainless steel, resulting in improved hardness and wear resistance. The coating's metallurgical properties were analyzed through surface topography and electron microscopy, showing the presence of meta stable carbides and alloying elements that enhance tensile strength and bonding. Copper in the coating provides self-lubricant properties at room temperature.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2022)
Review
Engineering, Industrial
A. T. Clare, R. S. Mishra, M. Merklein, H. Tan, I. Todd, L. Chechik, J. Li, M. Bambach
Summary: The authors provide a comprehensive insight into the mechanics of additive manufacturing process, discussing how thermodynamics affect microstructure and properties. They also analyze the impact of processing conditions and traditional casting methods on modifying solidification microstructure, as well as discuss the material types and alloy families in powder bed fusion and directed energy deposition.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
Luzhen Nie, David A. Hutchins, Lorenzo Astolfi, Timothy P. Cooper, Adam T. Clare, Chris Adams, Richard L. Watson, Peter J. Thomas, David M. J. Cowell, James R. McLaughlan, Stefano Laureti, Marco Ricci, Steven Freear
Summary: The use of 3D acoustic metamaterial (AMM) immersed in water is proposed to suppress unwanted ultrasound waves and improve the sensitivity for detecting weak microbubble emissions. Numerical and experimental results show that the application of AMM efficiently improves the signal-to-noise ratio for subharmonic and ultraharmonic microbubble emissions, which in turn can enhance treatment outcomes from cavitation-mediated focused ultrasound therapy.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Engineering, Industrial
Alistair Speidel, Matthew D. Wadge, Leonidas Gargalis, Timothy P. Cooper, William Reynolds, David Grant, Richard Hague, Adam T. Clare, James W. Murray
Summary: This study investigates the impact of optically absorptive Zn-coated Cu powders on material incorporation phenomena during LPBF process. The Zn-coated powder enhances accretion at the fastest effective scan speed tested, but exhausts the surrounding powder bed at slower speeds, causing instability and balling. The presence of Zn mainly occurs through secondary deposition mechanisms like spatter and condensation, rather than in-process alloying.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Engineering, Manufacturing
Jan-Hendrik Groth, Mirco Magnini, Christopher Tuck, Adam Clare
Summary: Current biomimetic designs lack the incorporation of natural variance, while the presented methodology allows for the introduction of randomness through the superimposition of Gaussian distribution on regular arrays of parametric unit cells, preventing overlaps and providing a template for more accurate mimicry of biological structures across multi-physics problems.
ADDITIVE MANUFACTURING
(2022)
Article
Chemistry, Multidisciplinary
Alistair Speidel, Ivan Bisterov, Adam Thomas Clare
Summary: Counterfeit parts are a serious concern for manufacturers and end users, and preventing counterfeiting is of great importance. This article presents a rapid electrochemical jet engraving routine for encoding materials at lengths that can be imaged with a smartphone, in order to prevent counterfeiting. The encoded structures are stable and can withstand high temperatures, and individual identification can be achieved through rapid image recognition.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Deyu Yang, Rui Bao, Adam T. Clare, Kwing-So Choi, Xianghui Hou
Summary: This study proposes a new ice mitigation strategy called slippery liquid-impregnated porous metallic structure (LIPMS), which involves impregnating selected liquids into porous copper components to prevent ice formation. The results show that LIPMS can significantly delay the icing of water droplets, provide good frost resistance, and demonstrate ultra-low ice adhesion strength.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Sebastian A. Pfau, Antonino La Rocca, Ephraim Haffner-Staton, Michael W. Fay, Alasdair Cairns
Summary: This study analyzed sub-23 nm particulate emissions from internal combustion engines using techniques that do not rely on equivalent diameters. It found the presence of stable, non-volatile sub-10 nm particulates in the exhaust, as well as fractal soot agglomerates consisting of several primary particles. The primary particles exhibited mainly core-shell nanostructures, and additional amorphous layers or crystalline regions were observed under different operating conditions.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Manufacturing
Shamraze Ahmed, Alistair Speidel, James W. Murray, Nuhaize Ahmed, Martyn Cuttell, Adam T. Clare
Summary: Electrical discharge machining (EDM) is a widely used manufacturing process for machining hard or high melting point metals. Previous attempts to remove the defective recast layer have increased process complexity, and existing EDM ECM hybrid processes have failed to understand the process mechanisms and propose methods to control removal mechanisms. This study introduces tailored electrolytic-dielectrics to eliminate the defective recast layer while maintaining machining rate.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2022)
Article
Engineering, Manufacturing
Alistair Speidel, Ivan Bisterov, Krishna Kumar Saxena, Mohamed Zubayr, Dominiek Reynaerts, Wataru Natsu, Adam T. Clare
Summary: Electrochemical jet processing is a site-specific manufacturing method that uses localized electrolyte jets to modify workpieces. It can selectively remove or deposit materials and has the potential to serve as an analysis tool. Unifying various site-specific manufacturing methods on one platform enables customization of surface geometries, finishes, and compositions.
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
(2022)
Article
Acoustics
Lorenzo Astolfi, David A. Hutchins, Richard L. Watson, Peter J. Thomas, Marco Ricci, Luzhen Nie, Steven Freear, Timothy P. Cooper, Adam T. Clare, Stefano Laureti
Summary: The concept of using air volumes trapped inside polymer shells to create a lens for ultrasound focusing in water is investigated. The study shows that by using evenly-spaced concentric rings and water-filled channels, focusing can be achieved and amplification can be enhanced through an appropriate choice of lens thickness. The polymeric design offers the advantage of easy construction through additive manufacturing, making it suitable for ultrasound focusing in water near 500 kHz.
Article
Chemistry, Multidisciplinary
Jisun Im, Yaan Liu, Qin Hu, Gustavo F. Trindade, Christopher Parmenter, Michael Fay, Yinfeng He, Derek J. Irvine, Christopher Tuck, Ricky D. Wildman, Richard Hague, Lyudmila Turyanska
Summary: This study successfully fabricates complex 3D metal nanoparticle-polymer nanocomposites using two-photon polymerization (2PP). Three complementary strategies are described: in situ formation of metal nanoparticles (MeNPs) through a single-step photoreduction process, integration of pre-formed MeNPs into 2PP resin, and site-selective MeNPs decoration of 3D 2PP structures. These strategies offer exciting opportunities for the fabrication of MeNP composites with sub-micron resolution for various applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Microscopy
Kayleigh L. Y. Fung, Benjamin L. Weare, Michael W. Fay, Stephen P. Argent, Andrei N. Khlobystov
Summary: The reactivity of a series of related molecules under the 80 keV electron beam was studied and correlated with their structures and chemical composition. The stability of the molecules was found to depend on their degree of hydrogenation or halogenation. Fully halogenated molecules were the most stable, while semi-halogenated molecules were the least stable due to the elimination of H-X and subsequent polymerization. The presence of water molecules in the crystal lattice significantly decreased the stability of the semi-fluorinated molecules.
Article
Chemistry, Multidisciplinary
Andrew. T. Turley, Magnus W. D. Hanson-Heine, Stephen. P. Argent, Yaoyang Hu, Thomas. A. Jones, Michael Fay, Simon Woodward
Summary: Large S-8-corona[n]arene macrocycles with alternating aryl and 1,4-C6F4 subunits were successfully synthesized on large scales using new high acceleration SNAr substitution protocols. The size and functionality of the macrocycles can be adjusted by selecting the appropriate precursor and catalyst. Furthermore, the inclusion of solvent controls the conformation and fluorine-fluorine interactions of the macrocycles, leading to spontaneous self-assembly into honeycomb-like lattices.
Article
Chemistry, Multidisciplinary
Matthew D. Wadge, Matthew A. Bird, Andrzej Sankowski, Hannah Constantin, Michael W. Fay, Timothy P. Cooper, James N. O'Shea, Andrei N. Khlobystov, Darren A. Walsh, Lee R. Johnson, Reda M. Felfel, Ifty Ahmed, David M. Grant
Summary: This study investigates the chemical conversion and heat treatment of Ti6Al4V microspheres for their electrocatalytic properties. The wet-chemical conversion with sodium hydroxide and heat treatment at 450 degrees C are found to stabilize the surface of the microspheres and change the mechanism of the oxygen reduction reaction. The study explores a design strategy for new electrocatalyst materials by maintaining the microspherical nature of the material and tuning its surface.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Engineering, Manufacturing
Mohaimen Al-Thamir, Samer J. Algodi, Kamaal S. Al-Hamdani, Aqeel A. Abed
Summary: In this study, the impact of atypical WC-Co composite powder on L-PBF process was examined. The results revealed the influence of powder thickness on macro-sized solidification cracks and pores, and discussed the evolution of microstructure.
PROGRESS IN ADDITIVE MANUFACTURING
(2023)
