KEynote speakerS of ICMMT 2017

Prof. Syed Masood
Swinburne University of Technology, Australia


Prof Masood is a Professor of Mechanical and Manufacturing Engineering at Swinburne University of Technology in Melbourne, Australia. He obtained his Bachelor of Engineering Honours degree from India, Master of Engineering degree from Canada, and PhD from University of Queensland, Australia. He has over 24 years of experience in teaching and research in Advanced Manufacturing areas at Swinburne. He is also the Program Coordinator of Masters program in Advanced Manufacturing Technology at Swinburne. His current research interests are in polymer and metal based additive manufacturing including Direct Metal Deposition and Fused Deposition Modelling additive technologies. He has published over 275 research articles in international journals and conferences in various areas of additive manufacturing and advanced manufacturing.

Speech Title: Multi-material Additive Manufacturing Using Laser based Direct Metal Deposition

Abstract: In many engineering applications, existing monolithic alloys and metals put restrictions on materials selection for specific design due to their limited properties and characteristics. In a desire to enhance physical and mechanical properties of materials, researchers are pushing the boundaries to form new materials, composites, alloys and different structures. In contrast to the conventional manufacturing processes, additive manufacturing (AM) techniques provide an alternate way in which a part is manufactured via layer-by-layer addition of material. New multi-material AM techniques have allowed a bottom-up approach of manufacturing components of unique design and novel properties for different engineering applications. Laser-based direct metal deposition (DMD) is a multi-material AM technology where metal components using multiple metal powders can be manufactured by laser deposition of metal powders from multiple powder feeders simultaneously. In DMD type AM techniques, the input material for a part manufacturing can be altered within each layer during the metal deposition to make unique materials. A number of research projects on direct metal deposition of multi-material components by additive manufacturing will be presented involving unique design of auxetics, bimetals, plymetals, functionally graded structures, and wafer structures.

 

 

 

Assoc. Prof. Wassanai Wattanutchariya,
Chiang Mai University, Thailand

Wassanai Wattanutchariya is an Associate Professor in Industrial Engineering, Department of Industrial Engineering, Faculty of Engineering, Chiang Mai University. He received a Ph.D. from Department of Industrial and Manufacturing, School of Engineering, Oregon State University in 2002. He has experience in Fabrication Technology for Energy, Chemical, and Biological Systems, as well as the Development of Biomaterials and Biomedical Devices. His teaching and research interests include Precision Engineering and Modern Manufacturing, along with Product Design and Process Development.
His research projects have been funded by many Thai funding agencies including the National Research Council of Thailand, the Thailand Research Fund, and the Agricultural Research Development Agency (Public Organization). Examples of his research projects include the fabrication of fuel cell equipment, the product or process improvement for agricultural products, as well as the development of natural based biomaterial for medical application.
A recent research project on the “Development of Bone Substitute from Local Materials” was honoured with the 2015 Inventor Award by the National Research Council of Thailand. This was a collaboration between his engineering team and medical doctors from the Faculty of Medicine.

Speech Title: The biocompatibility and occlusion ability of a zein-based biomaterial for bone surgery

Abstract: During surgical procedures on bone, a common method of producing haemostasis at bleeding cancellous bone is the occlusion of blood vessels. This is often achieved with bone wax, which is not bioresorbable, unlike the zein-based biomaterial investigated in the present research. Zein is a prolamin derived from the protein-rich by-product of corn flour production, and has been gaining importance as a bio-medical material. Taking advantage of its solubility in ethanol-water solvents but insolubility in water, a zein-based viscoelastic solid can be produced which effectively occludes the flow of fluids through a porous surface modelling cancellous bone. Zein powder was dissolved into a 70% ethanol-in-water solution, and the ethanol was later leached out through exposure to an alcohol-free media. The insoluble zein 'resin' produced could occlude water flow through a porous surface. Experiments were conducted to determine the optimum composition of the precursor zein solution, varying the proportion of zein dissolved in the ethanol-water solvent. A 0.7 w/v composition was selected as the preferred ratio. A cell viability test using the resazurin assay showed that unleached ethanol in the zein-based biomaterial does not pose a threat, as the metabolic activity of osteoblasts on zein resin outperformed that on bone wax after 24 hours of incubation.

 

 

Prof. Ghenadii Korotcenkov
Gwangju Institute of Science and Technology, Korea

Ghenadii Korotcenkov received his PhD in Physics and Technology of Semiconductor Materials and Devices from Technical University of Moldova in 1976 and his Dr. Sci. degree in Physics of Semiconductors and Dielectrics from Academy of Science of Moldova in 1990 (Highest Qualification Committee of the USSR, Moscow). He has more than 40-year experience as a teacher and scientific researcher. Long time he was a leader of gas sensor group and manager of various national and international scientific and engineering projects carried out in the Laboratory of Micro- and Optoelectronics, Technical University of Moldova. 2007-2008 years he was an invited scientist in Korea Institute of Energy Research (Daejeon). Currently starting from 2008 year Dr. G. Korotcenkov is a research professor in the School of Materials Science and Engineering at Gwangju Institute of Science and Technology (GIST) in Korea.
His present scientific interests starting from 1995 year include material sciences, focusing on metal oxide film deposition and characterization, surface science, and thin film gas sensor design. G. Korotcenkov is the author or editor of thirty five books and special issues, including 11 volume “Chemical Sensors” series published by Momentum Press (USA), 15 volume “Chemical Sensors” series published by Harbin Institute of Technology Press (China), 3 volume “Porous Silicon: From Formation to Application” series published by CRC Press (USA) and 2 volume “Handbook of Gas Sensor Materials” published by Springer (USA). He is author and co-author of more than 550 scientific publications including twenty review papers, thirty five book chapters, and more than 250 peer-reviewed articles (h-factor=36 (Scopus) and h=41 (Google scholar citation)). He is a holder of 18 patents. He presented more than 200 reports on the National and International conferences, including fifteen invited talks. G. Korotcenkov was co-organizer of several International conferences. His research activities are honored by Award of the Supreme Council of Science and Advanced Technology of the Republic of Moldova (2004), The Prize of the Presidents of Ukrainian, Belarus and Moldovan Academies of Sciences (2003), Senior Research Excellence Award of Technical University of Moldova (2001; 2003; 2005), Fellowship from International Research Exchange Board (1998), National Youth Prize of the Republic of Moldova (1980), among others.

Speech Title: Metal Oxides for Application in Conductometric Gas Sensors: How to Choose

Keywords: electronic configuration, conductivity, band gap, surface properties, morphology, doping, surface modification, stability, manufacturability Abstract.

Abstract: A brief description of metal oxides, acceptable for usage in advanced conductometric gas sensors is given, and a consideration of the approaches, which can be used in selecting metal oxides for the manufacture of devices intended to sensor market, is conducted in this paper.

 

 

Invited speakerS of ICMMT 2017

Prof. Quang-Cherng Hsu, National Kaohsiung University of Applied Sciences, Taiwan

Speech Title: Improving Forgings Formability by Warm Complexing Processes

Abstract: Hand-tool is one of the important products which are widely used in manufacturing industry because of its advantages such as small size and light weight. Besides, it is very easy to use and carry in narrow space. Therefore, these products have become one of essential tools in human life. Forging of hand-tool as a case study in this research, which combines with a power tool to lock or release screws that are the same shape and size with purposes of increase in efficiency and productivity.
First, finite element simulation software was used to simulate and analyze forming processes of different preform shapes for observing the formability of each preform and defects during the forming processes. Die stress analysis was also conducted to investigate the die stress of the forming stages in different forming processes. Second, according to the formability and the die stress, the most suitable processes and preform were selected for actual experiments. Finally, to verify the simulation results accuracy, matching of feature, test of hardness was performed.
The simulation results show that preforms of stepped shape (Type 1) and hexagonal rod (Type 2) in the warm extrusion-forging processes both can fill the die cavity and the defects occurred in original products are significantly improved. However, Type 1 still exists defects during forming process but it can fill the die cavity by lateral flow. There are no defects happen at Type 2 during forming process. The experimental results show that the new design of the forming process and preform of Type 2 are suitable to actual experiments and also improve the disadvantages in original products. After comparing the simulation results and experimental results, it shows that the dimensional errors of hexagonal rod along the side and diagonal corners both are 0.3%. Dimensional errors of the Torx head along the side and diagonal corners are 0.3% and 1.6%, respectively. Therefore, a comparison between the analytical and experimental results shows good agreement.

 

Prof. Anika Zafiah Mohd Rus, Universiti Tun Hussein Onn Malaysia, Malaysia

Speech Title: Sustainable Foam Composites as Sound Absorbent Materials

Abstract: Sound absorption materials are one of the major requirements in many industries with regards to the sound insulation developed should be efficient to reduce sound. This is also important to contribute in economically ways of producing sound absorbing materials which is cheaper and user friendly. Thus, in this research, the sound absorbent properties of bio-polymer foam filled with hybrid fillers of wood dust and waste tire rubber has been investigated. Waste cooking oil from crisp industries was converted into bio-monomer, filled with different proportion ratio of fillers and fabricated into bio-polymer foam composite. Two fabrication methods is applied which is the Close Mold Method (CMM) and Open Mold Method (OMM). A total of four bio-polymer foam composite samples were produce for each method used. The percentage of hybrid fillers; mixture of wood dust and waste tire rubber of 2.5 %, 5.0%, 7.5% and 10% weight to weight ration with bio-monomer. The sound absorption of the bio-polymer foam composites samples were tested by using the impedance tube test according to the ASTM E-1050 and Scanning Electron Microscope to determine the morphology and porosity of the samples. The sound absorption coefficient (α) at different frequency range revealed that the polymer foam of 10.0 % hybrid fillers shows highest α of 0.963. The highest hybrid filler loading contributing to smallest pore sizes but highest interconnected pores. This also revealed that when highly porous material is exposed to incident sound waves, the air molecules at the surface of the material and within the pores of the material are forced to vibrate and loses some of their original energy. This is concluded that the suitability of bio-polymer foam filled with hybrid fillers to be used in acoustic application of automotive components such as dashboards, door panels, cushion and etc.

 

Prof. Vladimir Khovaylo, National University of Science and Technology "MISiS", Moscow 119049 Russia

Speech Title: Magnetocaloric effect in Ni2+xMn1-xGa (0.18 ≤ x ≤ 0.27) with coupled magnetostructural phase transition

Abstract: A great effort has been aimed during last decades at the development of materials suitable for energy saving solid-state magnetic refrigeration, especially for room-temperature applications such as air-conditions and refrigerators. Intensive studies of various intermetallic systems revealed that the largest magnetocaloric is observed in compounds undergoing a first-order magnetic phase transition. The enhanced magnetocaloric effect in such materials has been proved to be due to a contribution from the elastic subsystem. In Ni2+xMn1-xGa, martensitic transformation temperature Tm tends to increase and Curie temperature TC tends to decrease with deviation from the stoichiometry until they merge in a Ni2.18Mn0.82Ga composition. Both the transitions are coupled in rather an extended interval of Ni2+xMn1-xGa compositions, from x = 0.18 to x = 0.27. Here we report on direct measurement of magnetocaloric effect and its compositional dependence in Ni2+xMn1-xGa with coupled magnetostructural phase transition. Experimental results obtained revealed that adiabatic temperature change T is the largest in the alloys with x = 0.18 – 0.20. Magnetocaloric effect in the alloys with a higher Ni excess was found to be considerably smaller. This tendency in the compositional dependence of T is attributed to the fact that with increasing Ni excess x, a simultaneous decrease in magnetization saturation and in the lattice entropy change at martensitic transformation temperature is observed.

 

Assoc. Prof. I Nyoman Sudiana, Universitas Halu Oleo Kampus Bumi Tridharma, INDONESIA

Speech Title: Characterization of Silica Extracted from Rice Husk Ash Wastes Doped by Tin Dioxida for Wave Guide Material

Abstract: A series of experiments is made to produce silica, mixing with tin dioxide (SnO2), and characterizing for application of waveguide device. Silica xerogels are prepared using raw materials derived from rice husks ash (RHA), which abundant in South East Sulawesi. The synthesis conditions have been optimized to obtain the ash of rice husks with the maximum silica content. SnO2 are prepared by using a commercial powder. The ceramic waveguide materials are produced by mixing SX  and  SnO2 with various composition. The mixtures are molded to form the rectangular shape of 20 mm, 40 mm, and 5 mm in size. The samples will be sintered at different level of high temperatures (from 300oC to 1200 oC) using microwave heating system and electric furnace. The properties are characterized on the basis of the experimental data obtained using densification measurement method (Archimedes method), crystallization (X-ray diffraction, XRD), microstructure (Scanning electron microscope, SEM), the functional groups and structure (Infrared and Raman Spectroscopy), and absorption (UVVis). Furthermore, the relationship between properties with SnO2  content and sintering temperature is also studied.

 

Dr. Mohd Hasmizam Razali, Universiti Malaysia Terengganu, UMT, Malaysia

Speech Title: Nanostructured TiO2 materials: Preparation, Properties and Potential Applications (3P’s)

Abstract: Nanostructured materials are a new class of materials which provide one of the greatest potentials for improving performance and extended capabilities of products in a number of applications. In particular nanostructured TiO2 was used as photocatalysts, gas sensor, solar cells and nanocomposite biomaterials. For each of these applications, aspects such as surface morphology, crystallinity and chemistry of the titania-based materials are the key parameters to be settled for the process optimization. A series of nanostructured TiO2 materials (TiO2 nanotubes, TiO2 nanorods, TiO2 nanowires, TiO2 nanoparticles) was synthesized using simple hydrothermal methods. XRD, FESEM, TEM, EDAX and nitrogen gas adsorption characterization was carried out to study the properties of synthesized nanostructured TiO2 materials. The performance of synthesized nanostructured TiO2 was evaluated for various purpose such as photocatalyst for organic pollutant removal in aqueous solution, as photosensitizer in solar cell and anti-bacterial thin film for biomedical and packaging applications. Among the nanostructured TiO2 materials, TiO2 nanotubes shows the highest activity regardless of their applications. This is probably due to their nanotubular morphology in which provided high surface area materials. The surface area of TiO2 nanotubes was found to be 186.48 m2/g. The outer and inner diameters of nanotubes are 4 nm and 10 nm, respectively with several hundred nanometers in length. Anatase TiO2 phase structure and crystallinity of TiO2 nanotubes supports the good performances of the nanostructured materials.

Biogrpahy: Mohd Hasmizam Razali has a PhD degree in Materials Engineering (Nanomaterials) from Universiti Sains Malaysia (USM), MSc. in chemistry (Catalyst) and B.Sc (Hons) in Chemical Industry from Universiti Teknologi Malaysia (UTM). Currently he is a Senior Lecturer at School of Fundamental Sciences, Universiti Malaysia Terengganu (UMT), Malaysia. He has published more than 30 technical papers in journals and conference proceedings locally and internationally related to the nanomaterials and functional materials research. Owing to their significant impacts to the science, economy and society, his innovative research and inventions have attracted global and national interests, enabling him to secure financial support from both private and government agencies. He has been awarded Who’s Who in the World for 3 years in a row 2013, 2014 and 2015 by The Marquis Who’s Who Publications Board. In 2014, the Cambridge Biographical Centre listed him as one of 2000 Outstanding Intellectuals of the 21st Century, due its ability to produce nanomaterials with tremendous improvement compared to conventional commercial materials. On top of that, he is also the recipient of the MAWHIBA Award and GENEVA Gold Medal Award in 1999.

 

Dr. LYDIA ANGGRAINI, President University, Indonesia

Speech Title: Superior Mechanical Properties of Ceramic Composites by Harmonic Structure Control

Abstract: Several ceramic composites such as SiC-ZrO2, Al2O3-ZrO2, and Si3N4-ZrO2 containing nominally equal ratio 1:1 were prepared through high energy mechanical milling and spark plasma sintering. The relationship of microstructure and mechanical properties were investigated. Harmonic microstructures consisting of fine and ultra-fine grains forming a network were obtained by the optimum milling time for 144 ks with superior mechanical properties. The non-milled powder mixtures and too long milling time powder mixtures have low mechanical properties sintered by spark plasma. The crack propagates through ultra-fine grains and deflected by larger fine grains were obtained on the harmonic microstructure sample resulting in high toughness. Thus, the harmonic microstructure can be considered a remarkable design tool for creating superior the mechanical properties of SiC-ZrO2, Al2O3-ZrO2, and Si3N4-ZrO2 as well as other ceramic composites.

Biogrpahy: Lydia Anggraini received her M.Eng and Ph.D degree from Ritsumeikan University, Japan in 2008 and 2012, respectively. She studied Advanced Materials Science and Engineering in the Department of Mechanical Engineering, Ritsumeikan University. She joined Indonesia EPSON Industry Co., Ltd. in 2005. Since 2010, she has been a Research Assistant in the Advanced Materials Laboratory, Department of Mechanical Engineering, Ritsumeikan University, Japan. In 2013, she joined the Faculty of Engineering, President University, Jababeka, Cikarang, Indonesia where she is currently a Head of Study Program of Mechanical Engineering in President University. She is now engaged in research on microstructure control to create high mechanical properties of metal-matrix and ceramics-matrix composites, and its applications. She is now leading a research project under Collaborative Research Based on Industrial Demand “Electric Vehicle Development for Green City”.

 

Assistant Prof. Abulmaali Taher
Al Gabal Al Gharbi University, Gerian, Libya

Speech Title: Evaluating Corrosion and Passivation by using Electrochemical Techniques

Abstract: In this study, the electrochemical techniques which are used to analyze the corrosion behavior and the passive films are introduced in details. These electrochemical techniques include Linear Sweep Voltammetry (LSV), Cyclic Polarization (CP), Cyclic Voltammetry (CV), Tafel Extrapolation (TE) and Electrochemical Impedance Spectroscopy (EIS). The advantages and the disadvantages of these techniques are also introduced in this study. As an example to examine the efficiency and performing of these techniques, electrochemical measurements are carried out in a three-electrode system where commercial copper nickel alloy C70600 is used as a working electrode. These measurements are performed in natural sea water and in artificial saline solutions with different sulphate content. Results obtained by using these electrochemical methods in this investigation are compared with the results from conventional immersion tests in other previous studies. It concludes that these techniques provide a very convenient and efficient way to evaluate the corrosion and the passivation processes in both laboratory and field in a very short time.

Biography: Abulmaali Taher is an Assistant Professor working as one of the faculty members in the Materials Engineering department, Fuculty of Engineering, Al Gabal Al Gharbi University. He received his MSc degree in Material Engineering from University Science Malaysia (USM), Malaysia, in 1993. He also received his Ph.D degree in Material Engineering from Dalhousie University, Canada, in 2008. He published extensively in many international journals and he has many presentations in several conferences in Canada, USA, Libya, Thailand, Indonesia and Malaysia. He is a member of many professional societies such as The Association of Professional Engineers, Geologists and Geophysicists of Alberta (APEGA), The American Society of Mechanical Engineers (ASME). The National Association of Corrosion Engineers (NACE) membership, The Canadian Institute of Mining, Metallurgy, and Petroleum (CIM) membership, The Minerals, Metals and Materials Society (TMS) membership, The Society of Automotive Engineers (SAE International) membership.

He worked for about 25 years as instructor and Scientific researcher in different universities and higher institutes in both Libya and Canada. Dr. Abulmaali has served as consultant of many organizations on a wide range of problems related to materials engineering in both Libya and Canada. He earn many awards during his studying and working periods including an award for the best oral presentation in the 2008 graduate research symposium (Dalhousie University), an award for the best SEM image in the 2008 IRM annual meeting and recipient of a Dalhousie University award (Dalhousie University certificate in university teaching and learning). At the current time he is focusing in his research on the corrosion behavior of steels and copper nickel alloys in marine environment, corrosion in concrete, laser alloying and hardening and memory shape alloys.