Continuous structural monitoring of oil rig sub-sea structures for flood member detection using axisymmetric guided waves

被引：0
|
作者：
Mijarez, R [1 ]
Gaydecki, P
Burdekin, M
机构：
[1] Univ Manchester, Sch Elect & Elect Engn, POB 88, Manchester M60 1QD, Lancs, England
[2] Fatigue Monitoring Bureau, Macclesfield, Cheshire SK10 5LX, England
来源：
REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 25A AND 25B | 2006年 / 820卷
关键词：
guided waves; offshore platforms monitoring; chirp signal; real time filtering;
D O I：
暂无
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An axisymmetric guided wave system for detecting flooding in the hollow sub-sea structures of offshore steel oil-figs is presented. A sensor, attached to a sub-sea structure and powered by seawater, transmits chirp-encoded signals to a monitoring real-time digital signal processing system at surface level. Experiments performed using a jointed steel pipe structure, 7 m x 0.5 m x 16 mm, completely immersed in seawater showed optimal performance at 38 kHz contrasted to 21 kHz, corroborating values predicted by disperse theoretical model.
引用
收藏
页码：1648 / 1655
页数：8
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