Comparison analysis of fiber Bragg grating and Resistance Strain Gauge used in Quayside Container Crane Structural Health Monitoring
Fiber Bragg grating and resistance strain gauge have been used to test the stress change in key parts of structure of 61t-55m quayside container crane under the same testing conditions.The testing data and stress-time history diagrams obtained by the resistance strain gauge and fiber Bragg grating have been analyzed.The results verify good real-time property and high reliability of the structural health monitoring system based on fiber Bragg grating system.Quayside container crane is core equipment of harbor and fatigue load of its structure has great effect on service life of the whole crane,making it an important index to assess safe service life of the crane.However,test by resistance strain gauge commonly used at present cannot satisfy long-term monitoring requirements,and can only assess service life by one test; hence its reliability cannot meet actual demands.Fiber Bragg grating is a fundamental fiber optic device recently developed (since end of last century) in the world and widely used in photo-electronic treatment (e.g.fiber optic sensing).Jiangsu Province Science & Technology Support Plan—Social Development Project Research in large quayside crane structural health monitoring and assessment technology adopts a comprehensive monitoring system using fiber Bragg grating for real-time monitoring of various parameters (strain,ambient temperature,and vibration etc.) at key parts of the crane.This system can monitor in real-time dynamic response of large machinery (particularly cranes) under various environmental and load factors,provide effective scientific bases for crane maintenance,and apparently improve overall management level of harbor machinery,so as to ensure safe operation of large quayside cranes to the maximum extent,forecast and diagnose defects in such cranes,and extend their service life.
Quayside container crane Fiber Bragg grating Structural health monitoring
Li Xiang-dong Li Shi-lin Zhong Shao-long Ge Sen
Special Equipment Safety Supervision & Inspection Institute of Jiangsu Province, Nanjing 210036,PRC Shanghai Institute of Microsystems and Information Technology, Shanghai 200050, PRC China Special Equipment Inspection Institute, Beijing 100013, PRC
国际会议
济南
英文
485-493
2013-05-18（万方平台首次上网日期，不代表论文的发表时间）