Proceeding Of Mechanical Engineering Research Day 2016 (MERD’16)

This Open Access e-Proceeding contains a compilation of 105 selected papers from the Mechanical Engineering Research Day 2016 (MERD’16) event, which is held in Kampus Teknologi, Universiti Teknikal Malaysia Melaka (UTeM) - Melaka, Malaysia, on 31 March 2016. The theme chosen for this event is ‘IDEA. INSPIRE. INNOVATE’. It was gratifying to all of us when the response for MERD’16 is overwhelming as the technical committees received more than 200 submissions from various areas of mechanical engineering. After a peer-review process, the editors have accepted 105 papers for the e-proceeding that cover 7 main themes. This open access e-Proceeding can be viewed or downloaded at www3.utem.edu.my/care/proceedings. We hope that these proceeding will serve as a valuable reference for researchers. With the large number of submissions from the researchers in other faculties, the event has achieved its main objective which is to bring together educators, researchers and practitioners to share their findings and perhaps sustaining the research culture in the university. The topics of MERD’16 are based on a combination of fundamental researches, advanced research methodologies and application technologies. As the editor-in-chief, we would like to express our gratitude to the editorial board and fellow review members for their tireless effort in compiling and reviewing the selected papers for this proceeding. We would also like to extend our great appreciation to the members of the Publication Committee and Secretariat for their excellent cooperation in preparing the proceeding of MERD’16

Isogeometric Analysis for BIM-Based Design and Simulation of Sub-Rectangular Tunnel

The design and analysis of segmental tunnel lining is today often based on empirical solutions with simplified assumptions. This work showcases the application of Isogeometric Analysis (IGA) for computationally efficient simulations of tunnel linings [1, 2]. In our past research, we developed a design-through-analysis procedure that consists of i) parametric modeling of the segmented tunnel lining; ii) development of an IGA computational framework, iii) reconstruction of the BIM lining model for IGA analysis, and iv) simulation model for lining including a reconstructed IGA model, contact interfaces between the joints, and a non-linear soil-structure interaction model based on the Variational Hyperstatic Reaction Method (VHRM) [3].In this paper, we extend our method for the analysis of subrectangular tunnel linings and demonstrate its efficiency using the example of the Shanghai express tunnel. The advantage of our novel method is the flexibility in adapting the tunnel alignment with the help of NURBS/CAD technology. Employing the high-order geometry definition, convergence of the mesh refinement procedure can be obtained with much faster rate. As a result, the modelling effort and computational time are reduced significantly. Moreover, this approach allows to capture the bending moment with better regularity. The combination with an existing BIM modelling approach via geometryreconstruction leads to a very efficient framework for tunnel lining analysis and design

Laser-based Additive Manufacturing of Bulk Metallic Glasses: Recent Advances and Future Perspectives for Biomedical Applications

Bulk metallic glasses (BMGs) are non-crystalline class of advanced materials and have found potential applications in the biomedical field. Although there are numerous conventional manufacturing approaches for processing BMGs, the most commonly used like copper-mould casting have some limitations. It is not easy to manage and control the critical cooling rate, especially when the fabrication of complex BMG geometries is involved. Other limitations of these techniques include the size constraints, non-flexibility, and the tooling and accessories are costly. The emergence of additive manufacturing (AM) has opened another promising manufacturing route for processing BMGs. AM processes, particularly laser powder-bed fusion (PBF-LB/M) builds parts layer-by-layer and successively fused the powder-melted feedstocks using prescribed computer-controlled laser scanner system, thereby forming a BMGs part upon sufficiently rapid cooling to ensure the glass forming-ability. PBF-LB/M overcomes the limitations of the pre-existing BMGs processing techniques by not only improving the part size, but also produces exceptionally complex structures and patient-specific implants. This review article aims to summarise and discuss the mechanism of BMGs formation through PBF-LB/M for biomedical applications and to highlight the current scientific and technological challenges as well as the future research perspectives towards overcoming the pore-mediated microcracks, partial crystallisation, brittleness and BMG size constraint

Mathematical and Numerical Aspects of Dynamical System Analysis

From Preface: This is the fourteenth time when the conference “Dynamical Systems: Theory and Applications” gathers a numerous group of outstanding scientists and engineers, who deal with widely understood problems of theoretical and applied dynamics. Organization of the conference would not have been possible without a great effort of the staff of the Department of Automation, Biomechanics and Mechatronics. The patronage over the conference has been taken by the Committee of Mechanics of the Polish Academy of Sciences and Ministry of Science and Higher Education of Poland. It is a great pleasure that our invitation has been accepted by recording in the history of our conference number of people, including good colleagues and friends as well as a large group of researchers and scientists, who decided to participate in the conference for the first time. With proud and satisfaction we welcomed over 180 persons from 31 countries all over the world. They decided to share the results of their research and many years experiences in a discipline of dynamical systems by submitting many very interesting papers. This year, the DSTA Conference Proceedings were split into three volumes entitled “Dynamical Systems” with respective subtitles: Vibration, Control and Stability of Dynamical Systems; Mathematical and Numerical Aspects of Dynamical System Analysis and Engineering Dynamics and Life Sciences. Additionally, there will be also published two volumes of Springer Proceedings in Mathematics and Statistics entitled “Dynamical Systems in Theoretical Perspective” and “Dynamical Systems in Applications”

International Workshop "Multiscale Biomechanics and Tribology of Inorganic and Organic Systems" ; Международная конференция "Перспективные материалы с иерархической структурой для новых технологий и надежных конструкций" ; VIII Всероссийская научно-практическая конференция с международным участием, посвященная 50-летию основания Института химии нефти "Добыча, подготовка, транспорт нефти и газа" : тезисы докладов [1-5 октября 2019 года, Томск, Россия

Издание содержит тезисы Международного междисциплинарного симпозиума «Иерархические материалы: разработка и приложения для новых технологий и надежных конструкций», в рамках которого проводятся: International Workshop «Multiscale Biomechanics and Tribology, of Inorganic and Organic Systems», Международная конференция «Перспективные материалы с иерархической структурой для новых технологий и надежных конструкций» и VIII Всероссийская научно-практическая конференция с международным участием, посвященная 50-летию основания института химии нефти «Добыча, подготовка, транспорт нефти и газа». В книге отражены аспекты решения фундаментальных научных проблем, связанных с разработкой и применением новых подходов к созданию перспективных материалов в интересах развития новых производственных технологий, освоения космического пространства, в том числе дальнего космоса, развития электроники, атомной энергетики, нефтегазового комплекса, медицины, транспорта и др. Книга адресована научным сотрудникам, инженерам, аспирантам и специалистам, занимающимся вопросами физической мезомеханики, разработки наноструктурных объемных и наноразмерных материалов, наноструктурированием поверхностных слоев, тонкими пленками и покрытиями, нанотехнологиями, компьютерным конструированием новых материалов и технологий их получения, технологиями упрочнения и поверхностной обработки материалов, неразрушающими методами контроля

Characterisation of concentrating solar optics by Light Field Method

Abstract: This dissertation develops ideas and techniques for the measurement of the light field produced by the concentrating optics that are used in solar thermal power systems. The research focussed on developing a framework and the principles for the implementation of a scalable technology that is suitable, in principle, for cost effective industrial implementation in the field. Investigation from first principles and technological surveys resulted in formulation of a number of model techniques, from which one was developed. A key component of the proposed model was evaluated using a novel reformulation and application of electrical impedance tomography (EIT). This was to implement an information transform effecting a highly non-linear compressive sensing mechanism, offsetting manufacturing and material complexity in the measurement of high solar flux levels. The technique allows sensing of a wide range of phenomena over arbitrary manifolds in three-dimensional space by utilizing passive transducers. An inverse reconstruction method particular to the structure of the device was proposed, implemented, and tested in a full simulation of intended operation. The parameter space of internal configurations of the method were the subject of a uniform, statistical search, with results also indicating geometrical properties of the transform used. A variety of design guides were developed to better optimize the implementation of the techniques in a range of applications.M.Ing. (Mechanical Engineering Science