NDE of smart structures using multimode fiber optic vibration sensor

被引：27
|
作者：
Leng, JS [1 ]
Asundi, A
机构：
[1] Cranfield Univ, Royal Mil Coll Sci, Swindon SN6 8LA, Wilts, England
[2] Nanyang Technol Univ, Sch Mech & Prod Engn, Singapore 639798, Singapore
来源：
NDT & E INTERNATIONAL | 2002年 / 35卷 / 01期
关键词：
non-destructive evaluation; fiber optic sensor; vibration sensor; speckle detection; smart material;
D O I：
10.1016/S0963-8695(01)00024-X
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
There are many conventional methods which may be used to monitor the health of structures - of which vibration monitoring is effective and can be used for special structures such as aircraft wings. A smart structure system based on fiber optic vibration sensors has been developed to monitor structural damage. A method based on the detection of spatial speckle of a multimode optical fiber is described. A multimode optical fiber with a diameter of 2001230 mum is used in the present experiment. The theoretical analysis and the experimental tests are described. The fiber optic sensors have been embedded in the carbon/epoxy composite specimens and surface mounted on the surface of aluminum specimens. Furthermore, experiments to examine the different types of damage to these specimens have been carried out. The results show that this kind of multimode fiber optic sensor can be used in the non-destructive evaluation of smart materials. (C) 2001 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：45 / 51
页数：7
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