Development of a low-cost laser vibrometer sensor for structural indentification | |
| Author | Kim, Mengchheang |
| Call Number | AIT Thesis no.ST-24-29 |
| Subject(s) | Structural health monitoring Detectors--Design and construction Vibration |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Structural Engineering |
| Publisher | Asian Institute of Technology |
| Abstract | Structural identification provides valuable insights into the condition of buildings and bridges by utilizing vibration data obtained through sensors to determine dynamic properties such as natural frequency, mode shapes, and damping, which are essential for assessing both old and new structures. Vibration sensors play a crucial role in applications such as damage detection and condition assessment, model updating and validation, maintenance and life cycle management, and long-term monitoring. This research focuses on the development of a non-contact, laser-based vibration sensor designed for ambient measurements over long distances. A comprehensive setup and theoretical framework for the instrument’s develop ment are presented, alongside laboratory experiments and field applications on buildings to evaluate the sensor’s performance. Detailed results on sensor calibration, bench marking, and practical applications are provided, with comparisons to an industrial-standard vibra tion sensor, such as the force balance developed by Columbia Research Laboratories, Inc. The findings demonstrate potential of the developed sensor as an effective tool for structural identification and monitoring. |
| Year | 2024 |
| Type | Thesis |
| School | School of Engineering and Technology |
| Department | Department of Civil and Infrastucture Engineering (DCIE) |
| Academic Program/FoS | Structural Engineering (STE) /Former Name = Structural Engineering and Construction (ST) |
| Chairperson(s) | Krishna, Chaitanya;Mohammed, Waleed (Co-chairperson); |
| Examination Committee(s) | Pennung Warnitchai;Trau, Dieter Wilhelm;Bora, Tanujjal; Nakhorn Poovarodom; |
| Scholarship Donor(s) | AIT Fellowship; |
| Degree | Thesis (M. Eng.) - Asian Institute of Technology, 2024 |