Vision-based multi-point displacement measurement for SHM
Abstract »As an emerging noncontact method, the vision-based displacement sensor systems have offered a promising alternative to the conventional sensors for vibration-based structural health monitoring (SHM). While most existing studies on vision sensors focus on the measurement performance evaluation, the potentials of vision sensor for low-cost structural modal analysis are experimentally explored through a three-story frame structure and a simply beam structure. The identified modal results based on the displacement measurements by using one low-cost camera agree well with that from multiple reference accelerometers. It is believed that identified modal parameters can be a better substitute for model updating, system identification, and detect damages, etc., as the vision sensor can achieve smoother mode shapes while the resolution of mode shapes from accelerometers is limited by the sensor number.
Biography: Dr. Dongming Feng graduated from Columbia University. His research focuses on SHM related topics.
Affiliation: Columbia University 10027 New York USA 9178344717Feng, Maria Q.**Feng, Maria Q.** email@example.com
Biography: Professor Feng’s research is on the forefront of multidisciplinary science and engineering in sensors, structural health monitoring, smart structure and system control for civil infrastructure and military applications, with an emphasis on structural safety and system resilience against natural and man-made hazards.
Affiliation: Columbia University 10027 New York USA