2007 Graduate Catalog and 2006 Annual R & D Report - Sirindhorn ...

2007 Graduate Catalog and 2006 Annual R & D Report
Sirindhorn International Institute of Technology (SIIT)
Dr. Mongkut Piantanakulchai
Assistant Professor
B.Eng. in Civil Engineering, Chulalongkorn University, Thailand
M.Eng. in Transportation, Asian Institute of Technology (AIT), Thailand
Ph.D. in Transportation, Tohoku University, Japan
Areas of Specialization: Life Cycle Assessment (LCA) of transportation and infrastructure; Transport and
environment; Input-Output modeling, and applied economic modeling for transport; and Multicriteria decision
making.
Research Interests:
Multicriteria Decision Making in Civil Engineering
The current research interest focuses on applications
of multi criteria decision making techniques to solve
civil engineering problems. Possible topics include
engineering design, prioritization and evaluation of
public measures, classification problems, etc. Some
research topics require knowledge and cooperation
from multi-disciplinary fields. Examples of research
being conducted include highway corridor planning,
prioritization of highway accident reduction measures,
landslide/seismic hazard zoning, seismic resistance
and maintenance prioritization of existing buildings.
Techniques such as the Analytic Network Process
(ANP) and Fuzzy Decision Making Methods are used
to solve the multicriteria decision making problems.
Highway Design Optimization
Highway design is a complex process that involves
many constraints and objectives to be achieved. The
conventional design method is manual. Therefore the
number of alternatives is limited by the choices of the
designer. It is also time and cost consuming to
generate many alternatives by manual design. The
research aims to apply some heuristic techniques
such as Genetic Algorithm (GA) and Ant Colony
Optimization (ACO) to solve the highway design
optimization problem within the Geographic
Information System (GIS) environment.
Dr. Pruettha Nanakorn
Associate Professor
B.Eng. (1 st Class Honors) in Civil Engineering, Chulalongkorn University, Thailand
M.Eng. in Structural Engineering, Asian Institute of Technology (AIT), Thailand
D.Eng. in Civil Engineering, The University of Tokyo, Japan
Areas of Specialization: Computational mechanics; Finite element analysis; Design automation; Structural
optimization.
Research Interests:
Analysis of Cohesive Crack Growth by the
Element-Free Galerkin Method
In this research, the Element-Free Galerkin (EFG)
method is extended to include nonlinear behavior of
cohesive cracks in 2D domains. A cohesive curved
crack is modeled by using several straight-line
interface elements connected to form the crack. The
constitutive law of cohesive cracks is considered
through the use of these interface elements. The
stiffness equation of the domain is constructed by
directly including, in the weak form of the global
system equation, a term related to the energy
dissipation along the interface elements. Using the
interface elements in conjunction with the EFG
method allows crack propagation to be traced easily
and without any constraint on its direction.
Structural Design Optimization by Genetic
Algorithms
When designing structures, engineers have to
consider not only the load-carrying capacity of the
structures but also the cost to construct them.
Designs that use smaller amounts of materials are
preferable, given that the construction methods do not
become impractical or too expensive. To achieve this
goal, many optimization techniques have been
employed in structural design, each of which has
strong and weak points. Important characteristics of
the structural design optimization problems are 1) the
solution we seek is the global optimal solution, 2) the
design variables are discrete. These two major
characteristics suggest that Genetic Algorithms could
be good choices. In this study, an appropriate
optimization technique for structural design based on
the Genetic Algorithms will be proposed.
Dr. Somnuk Tangtermsirikul
Professor
B.Eng. (Honors) in Civil Engineering, Chulalongkorn University, Thailand
M.Eng. & D.Eng. in Civil Engineering, University of Tokyo, Japan
Areas of Specialization: Modeling of concrete behavior; Durability of concrete; Special concrete; Use of
wastes and recycled materials in cement and concrete; Repair and maintenance of concrete structures.
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