Wireless vibration-based SHM of caisson-type breakwater under foundation damage

So-Young Lee; Khac-Duy Nguyen; Jeong-Tae Kim; Jin-Hak Yi

doi:10.1117/12.917541

6 April 2012 Wireless vibration-based SHM of caisson-type breakwater under foundation damage

So-Young Lee, Khac-Duy Nguyen, Jeong-Tae Kim, Jin-Hak Yi

Proceedings Volume 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012; 83454K (2012) https://doi.org/10.1117/12.917541
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2012, San Diego, California, United States

Abstract

This paper presents a vibration-based structural health monitoring (SHM) technique using a high sensitive wireless sensor node for caisson-type breakwater. To achieve the objective, the following approaches are implemented. Firstly, vibration-based SHM method is selected for caisson-type breakwater. The feasibility of the vibration-based SHM method is examined for the caisson structure by FE analysis. Foundation loss damage is considered as the damage of caisson-type breakwater. Secondly, a wireless SHM system with a high sensitive wireless sensor node is designed. The sensor node is built on an imote2 platform. The vibration-based SHM method is embedded on the sensor node. Finally, the performance of the wireless SHM technique is estimated from experimental tests on a lab-scaled caisson. The vibration responses and damage monitoring results are compared with the proposed wireless system and conventional wired system.

Citation Download Citation

So-Young Lee, Khac-Duy Nguyen, Jeong-Tae Kim, and Jin-Hak Yi "Wireless vibration-based SHM of caisson-type breakwater under foundation damage", Proc. SPIE 8345, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2012, 83454K (6 April 2012); https://doi.org/10.1117/12.917541

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