About Me
Mechanical and Aerospace Engineering Student
I'm an engineering student at Kyushu University (IUPE) with a passion for structural dynamics and vibration analysis. My academic journey began at age 14, when I discovered Computer-Aided Design (CAD) through tools like FreeCAD. I was immediately drawn to the precision, scalability, and creative potential CAD offers—especially in the field of engineering.
My interest deepened during my participation in the Physics Olympiad, where I developed a strong enthusiasm for mechanics and logical problem-solving. This led me to explore how computational tools and CAD skills could be combined to solve complex mechanical problems using methods like the Finite Element Method (FEM).
I'm particularly driven by the often-overlooked importance of structural dynamics in modern engineering design. Neglecting dynamic behavior in structures can lead to critical issues in real-world applications. That's why I'm passionate about advancing tools and technologies that help engineers better understand and integrate dynamic analysis into their designs—especially in energy systems and upstream machinery.
Location
Fukuoka, Japan
wiwatchumai@gmail.com
Education
My academic journey and educational background
Bachelor of Engineering
Kyushu University (IUPE)
Kyushu University offers international undergraduate programs, including Mechanical and Aerospace Engineering, providing high-quality education in a small, interactive class environment. These programs offer research opportunities with leading scientists at advanced research facilities, fostering a global perspective among students.
Key Courses
Achievements
- Monbukagakusho Scholarship (MEXT 2025) awarded international students
High School Diploma
Royal English Programme School
Focusing on providing students' academics in bilingual
Key Courses
Achievements
- Graduated
Awards & Competitions
Recognitions and competitions that have shaped my academic journey
Young Scientist Competition (YSC27th)
National Science and Technology Development Agency (NSTDA)
ASEAN Student Science Fair (ASSF-2024)
Science Association of Indonesia
SUT SMILE CYS III national conference on science
Suranaree University of Technology
Jakarta International Science Fair (JISF-2024)
Indonesian Young Scientist Association
International Science Project Competition (ISPC-2024)
Ministry of Education
Thailand Physics Olympiad
The Promotion of Academic Olympiad and Development of Science Education Foundation under the patronage of Her Royal Highness Princess Galyani Vadhana Krom Luang Naradhiwas Rajanagarindra
My Projects
A selection of academic and personal projects I've worked on during my studies
Simplification to Droplet Impact Fluid Surface Phenomenon Through Bouncing Ball Model
The ball bouncing problem is a well-known problem in physics, involving a ball dropped from a height to the ground. In this paper, the work investigates the theoretical and experimental setup that describes the dynamics of a rigid body on a chaotic elastic surface under air-damp conditions. Examination of four different types of balls is made, including a marble, metal ball, tennis ball, and ping-pong ball. In this experiment, the effect of impact velocities is not considered; the ball is dropped from a fixed height. The method in this work employs the Rayleigh Dissipation Function to specify the effects of dissipative forces in Lagrangian mechanics. Our discoveries reveal that the dynamics of the ball exhibit horizontal motion while damping oscillation occurs during the destabilized vertical pinch-off motion. Moreover, rotational motion is studied, as the ball impacts asymmetrically on surface. According to the studies of four different balls, the outcomes illustrate that greater mass results in more frequent dynamics, and the experimental results at some points align with the theoretical model of the studied motion. This knowledge contributes to our understanding of the complex fluid system and could serve as a foundation for further developments in water droplet simulation.
Theoretical Model of a Bouncing Ball System Under Elastic Platform
Bouncing balls are a well-known problem in physics, where a ball drops from a height to the ground. Despite its simplicity, a ball may exhibit fascinating behaviors upon surface impaction. This research delves into the bouncing ball problem under different surface conditions by allowing the surface to vibrate freely owing to an external impulse. The experiment was conducted to study the impact of a ball on an elastic surface upon the presence of air-damping. Four types of balls were included in the examination: steel ball, marble, tennis ball, and ping-pong ball. The consideration of ball dynamics was taken in two parts including ball bouncing and oscillating. However, the complexity occurs when the ball oscillates in contact with the surface. To understand chaos, Finite Element Analysis and Python Computing were employed to form the simulations while pre-dicting the surface behaviors that affect the ball motion. Moreover, RDI high-speed cameras were used for motion amplification and to analyze the surface vibration more precisely. Our discovery revealed the relationship between damping ratio, peak-to-peak displacement, oscillation frequency, and amplitudes upon different kinds of mass. Fi-nally, this research contributes to the development of facets of spray research such as improvement in the spray nozzle in the cooling tower.
Finite Element Method Approach Modal Characterization of a Rigid-Beam Axial Oscillation Under Load
The axial oscillation of long beams has been extensively studied for various engineering applications, such as structural optimization in civil and mechanical design. In addition to transverse oscillations, long rigid beams are also susceptible to axial oscillations, which can contribute to structural instability, potentially leading to long-term failure and adverse effects on engineering systems. This study focuses on the mathematical model enhance structural dynamics derived from the analysis of a rigid beams received axially static loaded conditions. A generalized approach is adopted by modeling the beam as a simple rectangular structure to isolate the fundamental oscillatory behavior. The mathematical model is developed using the Finite Difference Method (FDM) and validated through the Finite Element Method (FEM) using CalculiX to determine the mode shapes exceed by the beam. The results from LU Decomposition Method (LUD) confirm the validity of the formulated system of linear algebraic equations. Also this work reveals the natural frequencies from dynamic responses and corresponding mode-shapes related to longitudinal oscillation. The solutions obtained from both the mathematical model and the numerical studies show a strong correlation. These findings offer insights into the structural integrity and axial vibrational characteristics of rigid beams, with valuable implications for the further engineering applications.
Skills
Technical skills and knowledge I've developed through my coursework and projects
Technical Skills
Passionate Engineering Skills
Software & Tools
Contact
Feel free to reach out through any of the following channels