期刊
COMPOSITE STRUCTURES
卷 75, 期 1-4, 页码 321-327出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2006.04.054
关键词
composite joints; structural health monitoring; Bragg grating; novelty detection; model-independent
This paper describes a methodology for the health monitoring of composite marine joint structures based on strain measurements under operational loading using embedded fibre Bragg grating sensors. Finite element modelling indicated that the presence of a disbond significantly altered the bond-line longitudinal strain distribution. This was verified qualitatively through an experimental test program. The experimental results are examined in relation to the FE predictions and the implications for a practical strain-based SHM system are discussed. A technique is developed, based on novel signal processing and statistical outlier detection. This enables the sensor measurements to be used for damage detection without reference to a high-fidelity numerical model of the structure which is often difficult and resource-intensive to generate. The technique is shown to provide successful damage diagnoses with an acceptable level of accuracy. Further improvement in diagnostic accuracy may be achieved by increasing the sensor density. (C) 2006 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据