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Analysis of the shrinkage at the thick plate part using response surface methodology

AIP Conference Proceedings 2017年第1期1885卷

作者： N. M. Hatta M. Z. Azlan Z. Shayfull S. Roselina S. M. Nasir 1Soft Computing Research Group Faculty of Computing Universiti Teknologi Malaysia Malaysia 2School of Manufacturing Engineering Universiti Malaysia Perlis Arau 02600 Malaysia 3Green Design and Manufacture Research Group Center of Excellence Geopolymer and Green Technology (CEGeoGTech) Universiti Malaysia Perlis Kangar 0100 Malaysia 4Centre for Diploma Studies Universiti Malaysia Perlis Padang Besar 02100 Malaysia

Injection moulding is well known for its manufacturing process especially in producing plastic products. To measure the final product quality, there are lots of precautions to be taken into such as parameters setting at the initial stage of the process. Sometimes, if these parameters were set up wrongly, defects may be occurred and one of the well-known defects in the injection moulding process is a shrinkage. To overcome this problem, a maximisation at the precaution stage by making an optimal adjustment on the parameter setting need to be done and this paper focuses on analysing the shrinkage by optimising the parameter at thick plate part with the help of Response Surface Methodology (RSM) and ANOVA analysis. From the previous study, the outstanding parameter gained from the optimisation method in minimising the shrinkage at the moulded part was packing pressure. Therefore, with the reference from the previous literature, packing pressure was selected as the parameter setting for this study with other three parameters which are melt temperature, cooling time and mould temperature. The analysis of the process was obtained from the simulation by Autodesk Moldflow Insight (AMI) software and the material used for moulded part was Acrylonitrile Butadiene Styrene (ABS). The analysis and result were obtained and it found that the shrinkage can be minimised and the significant parameters were found as packing pressure, mould temperature and melt temperature.

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Optimal injection process parameter analysis for front panel housing using response surface methodology

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AIP Conference Proceedings 2017年第1期1885卷

作者： N. A. Zakaria M. Z. Azlan Z. Shayfull S. Roselina S. M. Nasir 1Soft Computing Research Group Faculty of Computing Universiti Teknologi Malaysia Malaysia 2School of Manufacturing Engineering Universiti Malaysia Perlis Arau 02600 Malaysia 3Green Design and Manufacture Research Group Center of Excellence Geopolymer and Green Technology (CEGeoGTech)Universiti Malaysia Perlis Kangar 0100 Malaysia 4Centre for Diploma Studies Universiti Malaysia Perlis Padang Besar 02100 Malaysia

The quality of plastic products depends on how its looks, whether it follows the intended design or not. Shrinkage and warpage are some of the main defects on the moulded parts produced in the injection moulding process due to the difficulty in adjusting the optimum set of parameter. This study was conducted to determine the optimal injection moulding parameters for minimizing shrinkage and warpage value on front panel housing part. The parameters selected for this study are melt temperature, mould temperature, packing pressure and cooling time. Response Surface Methodology (RSM) of analysis was applied to determine the best set of parameters and the significant factor(s) of the shrinkage and warpage were determined from analysis of variance (ANOVA). The input for this study was obtained through simulation.

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Introducing SCRUM into a distributed software development course 15

Introducing SCRUM into a distributed software development co...

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European Conference on Software Architecture Workshops, ECSAW 2015

作者： Bosníc, Ivana Ciccozzi, Federico Čavrak, Igor Di Nitto, Elisabetta Feljan, Juraj Mirandola, Raffaela University of Zagreb Faculty of Electrical Engineering and Computing Zagreb Croatia Mälardalen University School of Innovation Design and Engineering Västeras Sweden Politecnico di Milano Dipartimento di Elettronica Informazione e Bioingegneria Milano Italy

ISBN: (纸本)9781450333931

The growing enactment of Global Software engineering in industry has triggered educational institutions to perceive the importance of preparing students for distributed software development. During the last twelve years we have disclosed advantages and pitfalls of GSE to our students through our Distributed Software Development course. After running the projects according to the iterative process model for eleven years, we decided to shift to an agile development model, SCRUM. This decision was due to the growing industrial adoption of agile methods, but more importantly to increase proactiveness, sense of responsibility, and to balance the workload among the project team members. In this paper we describe the process and outcomes of our first attempt at introducing SCRUM in our distributed course. © 2015 ACM.

关键词： Students

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CSP and “omics” technology apllied on versatile and intelligent portable platform for modeling complex bio-medical data

CSP and “omics” technology apllied on versatile and intell...

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International Conference on Advanced Mechatronic Systems (ICAMechS)

作者： Luige Vladareanu Mihaiela Iliescu Hongbo Wang Feng Yongfei Victor Vladareanu Hongnian Yu Florentin Smarandache Robotics and Mechatronics Department Institute of Solid Mechanics of the Romanian Academy Bucharest Romania Parallel Robot and Mechatronic System Yanshan University Qinhuangdao China Faculty of Electronics II University Politehnica of Bucharest Romania School of Design Engineering and Computing Bournemouth University Poole Dorset UK Department of Mathematics University of New Mexico USA

This paper presents relevant aspects of the idea of using the digital medicine in cancer, so that to shape a viable strategy for creating and implementing an interactive digital platform, NEO-VIP, that should be the basic support to design the strategy for integration of basic, clinical and environmental research on neoplasia progression to cancer. The two main components of the VIPRO Platform are represented by the workstation “engineering Station” for CPS (Cyber Physical System) and “omics” technology and by the “Graphical Station” for the development of a virtual mechatronic system environment and virtual reality for system components' motion. The NEO-VIP Platform will consolidate the collaboration of specialized institutions in IT, medicine, health, life standards so that to enhance their capabilities to work as a consortium. The results lead to the possibility developing NEO-VIP Platform in the IT modelling field, applied on bio-medical data, as a new player alongside with the existing ones. So, new improved methodologies for investigating social implications of machines working with and for people will be applied.

关键词： Cancer Neoplasms Solid modeling Data models Bioinformatics Genomics Real-time systems

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Heart-creates-worlds: An aesthetic driven fitness training system 8th

Heart-creates-worlds: An aesthetic driven fitness training s...

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8th International Conference on Image and Graphics, ICIG 2015

作者： Han, Lizhen Zhang, Mingmin Tian, Feng Wang, Xinting State Key Lab of CAD and CG Zhejiang University HangzhouZhejiang China School of Design Engineering and Computing Bournemouth University Bournemouth United Kingdom DMI Research Center Hangzhou Normal University Hangzhou China

ISBN: (纸本)9783319219684

We present a novel fitness training system called Heart- Creates-Worlds (HCW) as a practical while pervasive solution to encourage effective daily physical activity. In this system, the aesthetic audiovisual effects of a virtual world are tightly associated with the user’s real time heart rate, while the heart rate reflects the users’ physiological and psychological state accordingly. By physically act on the control of the representation of the virtual world, users are being persuaded into traveling in a more aesthetically pleasing virtual surroundings than in the displeasure one, meanwhile, naturally fix themselves at the target fitness training zone. A pilot user study was conduct to evaluate the effectiveness and enjoyment of HCW. The results indicate that, this kind of aestheticdriven fitness training system is helpful on encouraging regular physical performance with enough amounts. © Springer International Publishing Switzerland 2015.

关键词： Heart

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Optimisation of warpage on plastic injection moulding part using response surface methodology (RSM)

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AIP Conference Proceedings 2017年第1期1835卷

作者： M. H. M. Hazwan Z. Shayfull S. Sharif S. M. Nasir N. Zainal 1School of Manufacturing Engineering Universiti Malaysia Perlis KampusTetapPauh Putra 02600 Arau Perlis Malaysia 2School of Engineering Technology Universiti Malaysia Perlis KampusUniCITIAlam Sungai Chuchuh 02100 Padang Besar Perlis Malaysia 4Green Design and Manufacture Research Group Centerof Excellence Geopolymer and Green Technology (CEGeoGTech) Universiti Malaysia Perlis 01000 Kangar Perlis Malaysia 3Faculty of Mechanical Engineering UniversitiTeknologi Malaysia 81310 UTM Skudai Johor Malaysia 5Faculty of Computing UniversitiTeknologi Malaysia 81310 UTM Skudai Johor Malaysia

Todays, there are various of optimisation methods that have been studied by many researchers in order to find the appropriate combination of processing parameters setting in the injection moulding process. From the previous literatures, the optimisation works have been proven will improve the moulded part quality. In this study, the application of optimisation work to improve warpage of front panel housing has been explored. By selecting cooling time, coolant temperature, packing pressure and melt temperature as the variable parameters, design of experiment (DOE) have been constructed by using the rotatable central composite design (CCD) approach. Response Surface Methodology (RSM) was performed in order to define the optimal processing parameters setting which will optimise the warpage condition. Based on the results, melt temperature is the most significant factor contribute to the warpage condition and warpage have optimised by 47.1% after optimisation. The findings show that the application of optimisation work offers the best quality of moulded part produced.

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Optimisation of warpage on plastic injection moulding part with MGSS conformal cooling channels moulds using response surface methodology (RSM)

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AIP Conference Proceedings 2017年第1期1835卷

作者： M. H. M. Hazwan Z. Shayfull S. Sharif N. Zainal S. M. Nasir 1School of Manufacturing Engineering Universiti Malaysia Perlis KampusTetapPauh Putra 02600 Arau Perlis Malaysia 2School of Engineering Technology Universiti Malaysia Perlis KampusUniCITIAlam Sungai Chuchuh 02100 Padang Besar Perlis Malaysia 4Green Design and Manufacture Research Group Centerof Excellence Geopolymer and Green Technology (CEGeoGTech) Universiti Malaysia Perlis 01000 Kangar Perlis Malaysia 3Faculty of Mechanical Engineering UniversitiTeknologi Malaysia 81310 UTM Skudai Johor Malaysia 5Faculty of Computing UniversitiTeknologi Malaysia 81310 UTM Skudai Johor Malaysia

Nowadays, there are various methods of optimisation works that have been explored by many researchers to find the appropriate processing parameters setting of injection moulding process. From the previous researches, it was reported that the optimisation work improved the moulded part quality. Apart from quality, the productivity in the injection moulding process also plays an important role. Therefore, some of the researchers have introduced the conformal cooling channels which have been proven to improve the quality and productivity of the moulded part. However, the application of optimisation work to determine an appropriate processing parameters setting in previous researches are only focusing on the conventional straight-drilled cooling channels and the application in conformal cooling channels are still lacking. In this study, the application of optimisation work to improve warpage of the front panel housing part with Milled Groove Square Shape (MGSS) conformal cooling channels has been explored. By selecting cooling time, cooling temperature, packing pressure and melt temperature as the variables, design of experiment (DOE) has been constructed by using the central composite design (CCD) approach. By performing Response Surface Methodology (RSM) optimisation approach, warpage of the moulded part has been optimised. Based on the results warpage has optimised by 46.5%. The finding shows that the application of optimisation work on the conformal cooling channels offers the best outcome.

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Multichannel time-series modelling and Prediction by wavelet networks 8

Multichannel time-series modelling and Prediction by wavelet...

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8th European Signal Processing Conference, EUSIPCO 1996

作者： Prochazka, Ales Smith, Jonathan Department of Computing and Control Engineering Prague University of Chemical Technology Technicka 1905 Prague 616628 Czech Republic School of Engineering Systems and Design South Bank University 103 Borough Road LondonSE1OAA United Kingdom

Multichannel time-series result from observations of a given engineering, biomedical, econometric or environ mental variable taken at different locations. Processing this type of signal presents problems associated with its extrapolation in given space ranges and its possible prediction. This paper presents a comparison of sea sonal AH modelling of such signals and the application of wavelet networks to the system identification and pre diction of a particular signal. The choice of wavelet functions and the optimization of their coefficients is discussed as well. Each method suggested in the paper is verified for simulated signals at first and then used for the analysis of real signals, including the observa tion of air pollution. All algorithms are written in the MATLAB environment. © 2015 European Signal Processing Conference, EUSIPCO. All rights reserved.

关键词： Time series

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"Local remote" collaboration: Applying remote group awareness techniques to co-located settings

"Local remote" collaboration: Applying remote group awarenes...

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18th ACM Conference Companion on Computer Supported Cooperative Work and Social computing, CSCW 2015 Companion

作者： Scott, Stacey D. Graham, T.C. Nicholas Wallace, James R. Hancock, Mark Nacenta, Miguel Systems Design Engineering University of Waterloo WaterlooON Canada School of Computing Queen's University KingstonON Canada School of Public Health and Health Systems University of Waterloo WaterlooON Canada Management Sciences University of Waterloo WaterlooON Canada School of Computer Science University of St. Andrews United Kingdom

ISBN: (纸本)9781450329460

Co-located environments have long been considered ideal for many types of group work, such as planning, decision-making, and design, since they provide a rich communication environment (e.g. delay-free voice communication, face-to-face interaction, eye gaze, and non-verbal communication), as well as promote awareness and coordination through the use of shared artifacts. However, the recent move towards multi-device ecologies in co-located settings, such as the use of multiple personal devices (e.g., laptops, tablets) or multiple personal devices in conjunction with larger, shared displays, such as digital walls or tabletops, can interfere with these common co-located communication and collaboration strategies, as various group members mentally and/or physical shift their focus to their personal devices rather than to their collaborators or to any physically shared artifacts. Group communications and coordination can easily breakdown in these scenarios as the lack of a physically shared group focus of attention can limit awareness of other's activities and task progress. In this workshop, researchers and practitioners will explore design techniques that can be used to address this issue, and improve group awareness in these co-located multi-device ecologies. This will be accomplished through group presentations, brainstorming sessions, and small-group breakout sessions.

关键词： Ecology

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Dynamical analysis of a constrained flexible extensible link with rigid support and clearance

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Journal of Theoretical and Applied Mechanics (Poland) 2014年第3期52卷 665-676页

作者： Dupac, Mihai School of Design Engineering and Computing Bournemouth University Dorset United Kingdom

Dynamic response of robotic systems is affected by deformation of their flexible components, velocity and mass of the systems, as well as by the presence of clearance or impact between the components. Since accurate simulations of such robotic systems are increasingly impor- tant, the modelling and dynamical behaviour of an extensible mechanism with a rigid crank and a flexible link is investigated in this paper. The equations of motion of the extensible flexible link, constrained to a circular, Cartesian, elliptical, Cassinian, Lame or pear-shaped quartic path, are presented. A dynamical analysis is carried out in order to compare the dynamical response of the flexible link vs. a rigid link under the combined effect of different parameters such as flexibility and clearance. The simulation result shows clear trajectories divergence due to the impact effect of the flexible link on the rigid crank.

关键词： Equations of motion

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