2009 Graduate Catalog and 2008 Annual R & D Report - Sirindhorn ...

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2009 Graduate Catalog and 2008 Annual R & D ReportSirindhorn International Institute of Technology (SIIT)joint. Moreover, various numerical and finite elementanalysis tools are utilized to analyze the behavior ofcomponents and structures. The finite elementmodels will be both member based and elementbased with the advanced state-of-the-art constitutivemodels of reinforced concrete.Dr. Mongkut PiantanakulchaiAssistant ProfessorB.Eng. in Civil Engineering, Chulalongkorn University, ThailandM.Eng. in Transportation, Asian Institute of Technology (AIT), ThailandPh.D. in Transportation, Tohoku University, JapanAreas of Specialization: Life Cycle Assessment (LCA) of transportation and infrastructure; Transport andenvironment; Input-Output modeling, and applied economic modeling for transport; and Multicriteria decisionmaking.Research Interests:Multicriteria Decision Making in Civil EngineeringThe current research interest focuses on applicationsof multi criteria decision making techniques to solvecivil engineering problems. Possible topics includeengineering design, prioritization and evaluation ofpublic measures, classification problems, etc. Someresearch topics require knowledge and cooperationfrom multi-disciplinary fields. Examples of researchbeing conducted include highway corridor planning,prioritization of highway accident reduction measures,landslide/seismic hazard zoning, seismic resistanceand maintenance prioritization of existing buildings.Techniques such as the Analytic Network Process(ANP) and Fuzzy Decision Making Methods are usedto solve the multicriteria decision making problems.Highway Design OptimizationHighway design is a complex process that involvesmany constraints and objectives to be achieved. Theconventional design method is manual. Therefore thenumber of alternatives is limited by the choices of thedesigner. It is also time and cost consuming togenerate many alternatives by manual design. Theresearch aims to apply some heuristic techniquessuch as Genetic Algorithm (GA) and Ant ColonyOptimization (ACO) to solve the highway designoptimization problem within the GeographicInformation System (GIS) environment.Dr. Pruettha NanakornAssociate ProfessorB.Eng. (1 st Class Honors) in Civil Engineering, Chulalongkorn University, ThailandM.Eng. in Structural Engineering, Asian Institute of Technology (AIT), ThailandD.Eng. in Civil Engineering, The University of Tokyo, JapanAreas of Specialization: Computational mechanics; Finite element analysis; Design automation; Structuraloptimization.Research Interests:Automation in Structural DesignStructural design can be classified into several designtasks. These tasks need different degrees of humanintuition. Those design tasks that require little humanintuition and can be systematically written asalgorithms may be easily delegated to computers. Incontrast, other design tasks that require a lot ofhuman intuition and do not have clear algorithmscannot be done without designers‟ experiences.Although it may seem that some of the heuristicdesign tasks are not difficult and can be handled quiteeasily by engineers, in practice, these easy tasksunfortunately prevent the whole design process frombeing completely automated. In this research area,artificial intelligence (AI) and other advancedcomputing technologies will be used to remove thesedesign task hindrances in order that completestructural design automation can be developed.Advanced Finite Element AnalysisIt can be safely said that the finite element method(FEM) is currently the best method for solvingmechanical problems. The method has beencontinuously developed and its progress is quitenoticeable. Nevertheless, the development of FEMhas been mainly concentrated on the theoretical partof the method. It is now time to integrate newcomputing technologies with FEM in order thatadvanced finite element analysis can be performedwith ease. In this research area, advanced computingtechnologies, such as new programmingtechnologies, artificial intelligence, informationtechnologies, and database technologies, will be usedto improve the performance and usability of FEM.37
2009 Graduate Catalog and 2008 Annual R & D ReportSirindhorn International Institute of Technology (SIIT)Dr. Somnuk TangtermsirikulProfessorB.Eng. (Honors) in Civil Engineering, Chulalongkorn University, ThailandM.Eng. & D.Eng. in Civil Engineering, University of Tokyo, JapanAreas of Specialization: Modeling of concrete behavior; Durability of concrete; Special concrete; Use ofwastes and recycled materials in cement and concrete; Durability and service life design of concretestructures; and Maintenance of concrete structures.Research Interests:Performance Based Analysis and Design ofConcrete Mix ProportionsSimulation models for predicting materials, mixproportion, time and environment dependentproperties of concrete are studied. At present, thestudied properties are workability, bleeding, strength,thermal cracking, autogenous and drying shrinkage,cracking resistance, carbonation, chloride inducedcorrosion, and sulfate resistance. Computer softwareis being developed for analysis and design purposesto obtain mix proportions of concrete with the requiredinitial and long-term performances. Results of theresearch works are utilized in the establishment of“Design Considering Durability and Service Life” forconcrete structures in Thailand.Proper Use of Cementitious andNon-cementitious Powders in ConcreteStudies on the properties of concrete with variouskinds of powder materials are conducted. Thematerials are: fly ash, bottom ash, CaCO 3 powder,lime ash, etc. Optimizing the use of these materialsand developmnet of new cement are the aims of thisproject.Special ConcreteVarious types of special concrete are studied with theaim to make proper use of local materials. Mix designprocesses in the forms of software and design chartsare being developed. In addition to the mix design,some standard guidelines are being established. Thestudied types of special concrete are; self-compactingconcrete, zero-slump concrete, low-heat concrete,sulfate-resisting concrete and expansive concrete,etc.Maintenance of Concrete StructuresResearch works and their applications on inspectionand life cycle evaluation of concrete structures arecarried out. The works are parts of the program todevelop appropriate maintenance codes andstandards for concrete structures in Thailand.Dr. Taweep ChaisomphobAssociate ProfessorB.Eng. (1 st Class Honors) in Civil Engineering, Chulalongkorn University, ThailandM.Eng. & D.Eng. in Civil Engineering, University of Tokyo, JapanAreas of Specialization: Application of Three-Dimensional Finite Element Methods to the Design of SteelStructures; Development of Run-off-River Small Hydropower Projects; Development of Efficient OrganicWaste Composting System for Small or Medium Communities.Research Interests:Application of Three-Dimensional Finite ElementMethods to the Design of Bridge StructuresIn order to propose the improvement in the designmethods of bridge structures, a three-dimensionalfinite element method using solid and shell elementsis employed. For the local stress analysis of acomplicated bridge structure, such as a compositesteel-concrete bridge, a model accounting forinteraction between steel and concrete is developed.By carefully investigating the behavior of steel boxgirders,the assessment of shear lag effects on stressand deflection is proposed.Development of Run-off-River Small HydropowerProjectsRun-off-river small hydropower is considered as oneof the promising renewable energy sources inThailand, since it gives less environmental and socialimpacts. Feasibility studies of the hydropowerprojects of this type are performed by consideringengineering, economic and environmental criteria. Ageographical information system (GIS) is adopted asa tool for the present study.Development of Efficient Organic WasteComposting System for Small and MediumCommunitiesComposting as the treatment of the municipal solidwaste has been getting more promising as it haslesser effect to the environment. However, in thedeveloping countries, it has usually been over lookeddue to its complex processes, and lack of technology.To eliminate such problems, this research projectaims to develop a better composting system. A pilotplant was set up, and a series of experiments wasconducted to study the optimal compostingconditions, which would maximize its efficiency inactuality. This will be followed by a feasibility studyand Life Cycle Assessment (LCA) of the proposal asa sustainable development for solid waste treatmentmethods in the future.38
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