อาจารย์ ดร. ศิวารักษ์ อุ่นศิวิไลย์

 Dr. Siwarak Unsiwilai, Ph.D.

Academic Title

    อาจารย์
    วิศวกรรมการขนส่ง

Contact Information

    Room: CE Building Room 534
    Phone: 

Education

  • Ph.D. in Civil Engineering (Railway Engineering) – Delft University of Technology, The Netherlands (2024)
  • M.Eng. in Civil Engineering (Transportation Engineering) – Chulalongkorn University, Thailand (2013)
  • B.Eng. in Civil Engineering – Chulalongkorn University, Thailand (2010)

Research

  • Maintenance and management of transportation infrastructure systems, with a focus on railway networks
  • Low-cost sensing technologies for condition monitoring of transportation assets
  • Mobile sensing and crowdsensing approaches for scalable infrastructure assessment
  • Multi-source data fusion for enhanced decision support in transportation infrastructure

Professional Experiences

  • Jul 2025 – Present:   Lecture, Department of Civil Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
  • Sep 2024 – May 2025:  Postdoctoral Researcher, Section of Railway Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands
  • Nov 2013 – Aug 2018:  Research Assistant, Infrastructure Management Research Unit, Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand

Selected Publications

Journals

  • Phusakulkajorn, W., Unsiwilai, S., Chang, L., Li, Z., & Núñez, A. (2025). A Hybrid Neural Model Approach for Health Assessment of Railway Transition Zones With Multiple Data Sources. IEEE Transactions on Instrumentation and Measurement, 74, 1–17. https://doi.org/10.1109/TIM.2025.3575986
  • Unsiwilai, S., Phusakulkajorn, W., Shen, C., Zoeteman, A., Dollevoet, R., Núñez, A., & Li, Z. (2024). Enhanced vertical railway track quality index with dynamic responses from moving trains. Heliyon, 10(19), e38670. https://doi.org/10.1016/j.heliyon.2024.e38670
  • Unsiwilai, S., Shen, C., Zeng, Y., Wang, L., Núñez, A., & Li, Z. (2024). Vertical dynamic measurements of a railway transition zone: a case study in Sweden. Journal of Civil Structural Health Monitoring, 14(4), 979–996. https://doi.org/10.1007/s13349-024-00766-0
  • Unsiwilai, S., Wang, L., Núñez, A., & Li, Z. (2023). Multiple-axle box acceleration measurements at railway transition zones. Measurement, 213, 112688. https://doi.org/10.1016/j.measurement.2023.112688
  • Unsiwilai, S., & Sangpetngam, B. (2018). Influences of Particle Size and Content on Deformation Resistance of Crumb Rubber Modified Asphalt using Dry Process Mix. Engineering Journal, 22(3), 181–193. https://doi.org/10.4186/ej.2018.22.3.181

Conference Proceedings

  • Shen, C., Unsiwilai, S., Zeng, Y., Wang, L., Hendriks, J., Moraal, J., Asplund, M., Zoeteman, A., Núñez, A., Dollevoet, R., & Li, Z. Integrated vibration-based bridge monitoring approach for freight dominated lines, in: the 13th International Heavy Haul Association Conference (IHHA 2025), 17–21 November 2025, Colorado, USA.
  • Roodenburg, W., Zeng, Y., Unsiwilai, S., Zoeteman, A., & Núñez, A. Challenges in smartphone-based crowdsensing for railway condition monitoring: Insights into variability and track quality assessment, in: the 42nd IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2025), 19-22 May 2025, Chemnitz, Germany.
  • Wang, L., Shen, C., Unsiwilai, S., Phusakulkajorn, W., Zeng, Y., Hendriks, J., Moraal, J., Núñez, A., Zoeteman, A., Dollevoet, R., & Li, Z. Sleeper support condition monitoring using axle box acceleration measurement, in: the 3rd International Conference on Rail Transportation (ICRT2024), 7-9 August 2024, Shanghai, China.
  • Wang, Unsiwilai, S., Zeng, Y., Shen, C., Hendriks, J., Moraal, J., Zoeteman, A., Núñez, A., Dollevoet, R., & Li, Z. Condition monitoring of railway transition zones using acceleration measurements on multiple axle boxes: Case studies in the Netherlands, Sweden, and Norway, in: the 10th Transport Research Arena Conference (TRA2024), 15-18 April 2024, Dublin, Ireland.
  • Phusakulkajorn, W., Hendriks, J., Moraal, J., Shen, C., Zeng, Y., Unsiwilai, S., Bogojevic, B., Asplund, M., Zoeteman, A., Núñez, A., Dollevoet, R., & Li, Z. Detection of Rail Surface Defects based on Axle Box Acceleration Measurements: A Measurement Campaign in Sweden, in: the 10th Transport Research Arena Conference (TRA2024), 15-18 April 2024, Dublin, Ireland.

Book Chapters

  • Phusakulkajorn, W., Hendriks, J., Moraal, J., Shen, C., Zeng, Y., Unsiwilai, S., Bogojevic, B., Nunez, A., Dollevoet, R., Li, Z., Asplund, M., & Zoeteman, A. (2024). Detection of rail surface defects based on axle box acceleration measurements. In P. Edlund, & A. Ekberg (Eds.), In2Track3: Concluding Technical Report (pp. 167-169). In2Track3.