KEYNOTE SPEAKER
Asst. Prof. Dr MEHMET ERDİ KORKMAZ
Karabük Üniversitesi, TURKEY
Karabük Üniversitesi, TURKEY
Dr. Mehmet Erdi Korkmaz is currently working with Mühendislik Fakültesi, Makine Mühendisliği, Karabük Üniversitesi, TURKEY since 2018. He has graduated from his PhD studies focusing on the determination of material constitutive equation parameters of Nickel based Super Alloy (Nimonic 80A) and the investigation on its applicability. His field of interest is on mechanical and manufacturing engineering. Dr Korkmaz has published in numerous publications including SCI, SSCI, impact-factor and AHCI indexed journals. Apart from his publications, he has been supporting a number of research projects under the higher educations of Turkey. The conference is honoured to receive Dr Korkmaz as the keynote speaker for this first-time conference organized.
Title: Investigation of Tensile Johnson-Cook Model Parameters for Nimonic 80A superalloy
Abstract. Developing high temperature technology increases the need for high temperature resistant materials. Nimonic 80A alloy is generally preferred due to its high creep resistance, oxidation resistance and high resistance to high temperature corrosion. The study determines the tensile constitutive equation (JC parameters) of Nimonic 80 A superalloys. Johnson Cook (JC) model is preferred amongst the various material constitutve equations (Zerille Armstrong, Bordner Partom, JC model). Three different kinds of tensile experiment were performed to identify the model parameters. These are quasi-static tensile experiments applied at room temperatures. These experiments were carried out at 0.001, 0.01 and 0.1 s-1 strain rates. Therefore, the reference strain rate for all experiments was selected to be 10-3. As a second test, tensile experiments were conducted at room temperature at high strain rates (102 ~ 103 s-1) using the Split Hopkinson pressure bar (SHPB). Lastly, tensile experiments were conducted at high temperatures (300 ~ 900 °C) at 0.001 s-1. It was observed whether all tests are compatible with each other or not, and so five Johnson-Cook (JC) parameters of Nimonic 80 A alloy were identified via the data found from the experiments. After determination of parameters, tensile test simulations by finite element method (FEM) were performed in ANSYS Workbench. As a result, the accuracy of the JC parameters is verified since there is a deviation of %2.84 between the experimental and the simulation results.
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KEYNOTE SPEAKER
Asst. Prof. Dr MEHMET ERDİ KORKMAZ
Karabük Üniversitesi, TURKEY |
INVITED SPEAKER 1
Dr. Mohd Azlan Bin Suhaimi
Universiti Teknologi Malaysia (UTM), MALAYSIA
Universiti Teknologi Malaysia (UTM), MALAYSIA
Mohd Azlan Bin Suhaimi is a senior lecturer in the School of Mechanical Engineering at UTM since 2009. He received his B.Eng. in Mechanical Engineering and Master’s degree in Advanced Manufacturing Engineering from UTM. He received his Ph.D. in Engineering from Jeonbuk National University, South Korea. During his PhD, he was attached as a researcher in one of Korea renowned research center, KITECH. This center helps Korean SMEs solve their manufacturing problems. In 2016 he returned to Malaysia to serve his country. His research work is focus on machining process and additive manufacturing covering both polymer and metal printing. He has conducted various training to vocational college, university students and related industries. Recently, during the MCO he was appointed as the head of School of Mechanical, emergency response team called UTMSHIELD, since then, his team provide several products and solutions to help the frontliner and local communities to fight against Covid-19 virus.
Title: Hybrid Cryogenic MQL for Improving Tool Life in Machining of Compacted Graphite Iron
Abstract. Compacted Graphite Iron, (CGI) is a type of cast iron which has outstanding mechanical strength and weight-to-strength ratio comparing to conventional gray cast iron (CI). The outstanding characteristics of CGI due to its graphite particle shape come from vermicular particle and compactness. The graphite is interconnected with random orientation and round edges, which results in higher mechanical strength. Whereas, graphite in CI presents smooth-surfaced flakes that easily propagate cracks, bringing weaker and brittle properties compared to CGI. Owing to the improved properties, CGI is a best candidate material to substitute gray cast iron that has been used in engine block castings for diesel engine. This is because CGI-based engines are able to operate under higher temperature and cylinder pressure with increased fuel consumptions, but produce lower levels of emissions. However, the implementation of CGI is still limited due to poor machining performance at high cutting speed. Further, tool life is decreased by about the factor of 20 percent when changed to CGI from CI under the same cutting condition. Thus, in this study, the effect of cryogenic cooling with minimum quantity lubrication (MQL) while high-speed machining of CGI (grade 450) is addressed. The machining test with cutting-speed of 700 mm/min, feed-rate 4,178 m/min, axial depth and radial depth-of-cut of 2.0 mm and 5.0 mm, respectively, was performed using uncoated carbide tools. Two different tool monitoring methods are used to monitor the cutting tool performance, which are the cutting force and machining sound pressure. A piezoelectric dynamometer composed of a 3-axis dynamometer (Kistler 9265B), a multi-channel charge amplifier (Kistler 5070) and a DAQ (Kistler 5697A) were installed to acquire cutting force data. Whereas, to acquire sound pressure, a microphone (GRAS 46AE) was installed inside a milling machine nearby cutting zone. A custom-made tool condition monitoring algorithm was developed using NI-Labview® software for data acquisition. The analyzed data are then used for evaluation with respective tool wear evolution. The results show that, the combination of cryogenic cooling with MQL has outperformed other cooling/lubrication methods by consuming less cutting force and producing less sound pressure. In addition, the combination method has improved the tool life by 26% compared to the conventional flood coolant method.
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Dr. Mohd Azlan Bin Suhaimi
Universiti Teknologi Malaysia (UTM), MALAYSIA Dr. Mohd Azlan Bin Suhaimi
Universiti Teknologi Malaysia (UTM), MALAYSIA |
INVITED SPEAKER 2
Dr. Nor Hasrul Akhmal Ngadiman
Universiti Teknologi Malaysia (UTM), MALAYSIA
Universiti Teknologi Malaysia (UTM), MALAYSIA
received his Bachelor of Engineering in Mechanical Engineering (Industry) degree from Universiti Teknologi Malaysia (UTM) in 2012. Based on his excellent achievement in academic and extra-curricular activities, he was offered the opportunity to pursue his Doctor of Philosophy (PhD) degree directly after his first degree via UTM’s Fast Track Programme. He embraced the challenge, and with diligence and perseverance he obtained his PhD in Mechanical Engineering from UTM in 2016. He is currently Senior Lecturer in the Department of Materials, Manufacturing and Industrial Engineering, School of Mechanical Engineering, Faculty of Engineering (FE), UTM, Johor Bahru, Johor, Malaysia. He is a member of Institution of Mechanical Engineers and Chartered Mechanical Engineer. He is also Professional Engineer recognized by Board of Engineer Malaysia and Professional Technologist recognized by Malaysia Board of Technologist. Dr. Hasrul is involved (both as Project Leader and Project Member) in numerous research projects funded by the Ministry of Education and various industries as well as by the UTM. His papers have been published in both international and national journals. In addition to this, he has presented papers at international and national conferences and seminars. He has won several international and national recognition such as best paper award, best presenter award and best invention award. He has obtained over 208 citations and H - index 7 in Scopus. Dr. Hasrul is engaged with several consultancy projects involving local companies and organizations and has conducted training on diverse courses organized by the university as well as industry.
Title: Android Based Application for Hazard Identification, Risk Assessment and
Risk Control (HIRARC) System
Risk Control (HIRARC) System
Abstract. Along with the rapid development, smartphone functionality is getting more important to us as it can bring convenience to the public. As we are in the middle of digitization, mobile applications have now become crucial to replace conventional manual way. The purpose of this study is to develop a functional Android Based Application for HIRARC System and evaluate its effectiveness in solving the problems. It is one of the element in Industry Revolution 4.0, which digitalize the slow and inefficient manual paper-based system with a mobile application. There are several problems identified in the current state of HIRARC process and procedure due to improper managing control and caused low efficiency in overall performance. Misplaced the HIRARC documents caused missing issues happened and it is time-consuming to look for the missing documents. Besides, referring to the printed hardcopy of HIRARC documents is slow and inefficient. This process can be improved by digitalized all the HIRARC information and stored into a database to help users retrieve HIRARC data quickly and easily by scanning QR code. The concept of prototype HIRARC System was proposed and successfully developed. The evaluation method is using qualitative analysis which is collecting user’s experience by distributing the survey questionnaire. The result in the qualitative analysis shows the positive result of the experience of the HIRARC System from users. The results proved that this android based application for HIRARC System has a great potential to improve the current HIRARC process and procedure.
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Dr. Nor Hasrul Akhmal Ngadiman
Universiti Teknologi Malaysia (UTM), MALAYSIA |