Comparison between Non-Destructive Evaluation Techniques and Integrated Fiber Optic Health Monitoring Systems for Composite Sandwich Structures
Source abstract
Abstract
Non-Destructive Evaluation (NDE) methods have been adapted to composite sandwich structures in order to detect damage, in particular impact induced damage. Using three coupons representative of radome structures, several techniques were tested: ultrasonics, the Electromagnetic/InfraRed method (EMIR), stimulated shearography and stimulated infrared thermography. The extension of the measured damaged area was taken as a criterion, showing that stimulated shearography and ultrasound are the most sensitive methods. Moreover, two integrated Health Monitoring Systems (HMS) were tested, based on the one hand on microbending sensitive fibres and Optical Time Domain Reflectometry (OTDR), and on the other hand on Fibre Bragg Grating (FBG) sensors. The experiments demonstrated that HMS can detect damage with sensitivity comparable to that of the external NDE techniques.
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Research context
OpenAlex topics: Advanced Fiber Optic Sensors · Structural Health Monitoring Techniques · Ultrasonics and Acoustic Wave Propagation
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Département Mécanique du Solide et de l’Endommagement, ONERA, BP 72, F-92322 Châtillon Cedex, France,
Département Mécanique du Solide et de l’Endommagement, ONERA, BP 72, F-92322 Châtillon Cedex, France
AIA Cuers-Pierrefeu, BP 888, F-83800 Toulon Naval, France
Département d’Electronique et d’Instrumentation Nucléaire SPE, LETI (CEA-Technologies Avancées), Centre d’Etudes de Saclay, F-91191 Gif-sur-Yvette Cedex, France
References (33)
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