Evaluating damage in smart composite laminates using embedded EFPI strain sensors

Zhou, Gang; Sim, L M

doi:10.1117/12.779392

Cited by 5 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Generally speaking, the emphasis is put on the macroscopic consequences of these phenomena through the analysis of the damage-induced behavior. In addition to conventional straingauge data, some studies rely for instance on acoustic emissions monitoring [2,3], ultrasonic inspection [4,5], electrical resistance measurements [6,7], and even fiber sensors data [8,9].…”

Section: Introductionmentioning

confidence: 99%

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Goidescu¹,

Welemane²,

Girard³

et al. 2013

Composites Part B: Engineering

138

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Goidescu¹,

Welemane²,

Girard³

et al. 2013

Composites Part B: Engineering

138

View full text Add to dashboard Cite

“…The efficiency of optical fiber sensors to continuously monitor structure deformation and reinforcement cracks depends mainly on strength transfer at the interface level between the embedded optical fiber and the composite structure [ 7 , 8 ]. In order to assess mechanical properties at interface level and composites performance, certain testing, such as the pull-out test, has been developed [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Optical Fiber Embedded in Epoxy Glass Unidirectional Fiber Composite System

et al. 2013

View full text Add to dashboard Cite

We aimed to embed silica optical fibers in composites (epoxy vinyl ester matrix reinforced with E-glass unidirectional fibers in mass fraction of 60%) in order to further monitor the robustness of civil engineering structures (such as bridges). A simple system was implemented using two different silica optical fibers (F1—double coating of 172 μm diameter and F2—single coating of 101.8 μm diameter respectively). The optical fibers were dynamically tensile tested and Weibull plots were traced. Interfacial adhesion stress was determined using pull-out test and stress values were correlated to fracture mechanisms based on SEM observations. In the case of the optical fiber (OF) (F1)/resin system and OF (F1)/composite system, poor adhesion was reported that may be correlated to interface fracture at silica core level. Relevant applicable results were determined for OF (F2)/composite system.

show abstract

“…In numerous structural applications, optical fibre embedded composites based on polymeric matrices with glass or carbon reinforcements [1,2] are recommended for structural health monitoring. Monitoring in real time the structural integrity using optical fibre sensors is linked with the strength transfer at the interface between the composite structure and the optical fibre [3,4]. Despite the significant progress in fabrication technology, reliability of optical fibres for sensors and smart structures still appears as a major factor [5,6].…”

Section: Introductionmentioning

confidence: 99%

Interfacial phenomena in optical fibre embedded systems

Severin

Caramihai

Abdi

et al. 2019

Composite Structures

View full text Add to dashboard Cite

The reliability and the expected lifetime of optical fibres used in different structural applications, including composites are closely related to the chemical environment action on the silica cladding. To ensure the long-term mechanical strength of the optical fibres, a polymer coating was applied onto the fibre surface during fabrication. The aging mechanism is assumed to enlarge or to extend the "Griffith flaws" which are spread at the fibre surface. Systematic experiments have been carried out to assess different reagents' effect on the fibre mechanical strength, such as fluorinated vapors, acetylene, ammonia and organic compounds. Different types of fibres, including hermetically coated ones, have been aged and subjected to mechanical tests under dynamic conditions. The Weibull statistical study allows to evaluate the flaws' dispersion along the fibre surface. SEM observations evidenced several failure mechanisms.

show abstract

Evaluating damage in smart composite laminates using embedded EFPI strain sensors

Cited by 5 publications

References 0 publications

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Damage investigation in CFRP composites using full-field measurement techniques: Combination of digital image stereo-correlation, infrared thermography and X-ray tomography

Optical Fiber Embedded in Epoxy Glass Unidirectional Fiber Composite System

Interfacial phenomena in optical fibre embedded systems

Contact Info

Product

Resources

About