Low coherence speckle interferometry (LCSI) for detection of interfacial instabilites in adhesive bonded joints

被引：5
|
作者：
Gastinger, K [1 ]
Gülker, G [1 ]
Hinsch, KD [1 ]
Pedersen, HM [1 ]
Storen, T [1 ]
Winther, S [1 ]
机构：
[1] ICT, SINTEF, Trondheim, Norway
来源：
INTERFEROMETRY XII: APPLICATIONS | 2004年 / 5532卷
关键词：
low-coherence interferometry; adhesion; microscopic electronic speckle pattern interferometry (ESPI); microscopic optical coherence tomography (OCT); transmission line model;
D O I：
10.1117/12.561204
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In this paper the basic principles of Low Coherence Speckle Interferometry (LCSI) are described. Theoretical background and experimental results for the systematic investigation of LCSI are presented. To understand and quantify the measurement results of adhesive bonded joints a modelling of the interference signal is required. For this purpose, a one-dimensional transmission line model is developed, including changes in the refractive index in a stressed adhesive layer and delamination of the glued interface. A new method for the detection of zero path length difference is introduced. Investigations of the probing depth in semi-transparent adhesive and recent experimental results of the characterisation of adhesive-bonded aluminium joints are presented.
引用
收藏
页码：256 / 267
页数：12
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