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桥梁拉索疲劳损伤评估的声发射数据融合方法

发表时间:2012-07-31  浏览量:982  下载量:295
全部作者: 李冬生,胡倩
作者单位: 大连理工大学土木工程学院
摘 要: 首先提出声发射主成分加权融合理论算法,并通过实例验证此方法的有效性。然后基于天津永和大桥多龄期斜拉索疲劳试验声发射数据,对其多通道声发射信号进行加权融合。实验结果表明:声发射融合后信号在识别模式方面得到了改善,减少了识别过程中的不确定性,为实现对识别声发射源全面一致估计提供条件。
关 键 词: 土木建筑结构;声发射;数据融合;桥梁拉索;疲劳损伤
Title: Acoustic emission data fusion method for bridge cable fatigue damage state evaluation
Author: LI Dongsheng, HU Qian
Organization: School of Civil Engineering, Dalian University of Technology
Abstract: In this paper, firstly, the principal component weighting algorithm is proposed, and the example shows the effectiveness of this method. Secondly, the data for the fatigue test of multi-age stay-cable of Tianjin Yonghe bridge is fused by the principal component weighting algorithm. The experimental results show that the fusion acoustic emission (AE) signals have been improved in identifying patterns, and the uncertainty of the recognition process have been reduced. The research realizes consistent estimation for distinguishing acoustic emission source.
Key words: civil engineering structures; acoustic emission; data fusion; bridge cable; fatigue damage
发表期数: 2012年7月第14期
引用格式: 李冬生,胡倩. 桥梁拉索疲劳损伤评估的声发射数据融合方法[J]. 中国科技论文在线精品论文,2012,5(14):1354-1360.
 
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