Journal ArticleDOI
Cure monitoring of smart composites using Fiber Bragg Grating based embedded sensors
Abstract:
A sensor embedded in the composite laminate can act as a temperature transducer during the composite cure mechanism. Once the composite is cured, the same sensor can be used to provide the information about the mechanical changes that influence the performance of the material. Fiber Bragg Grating (FBG) sensor is one such sensor which one can use for the composite cure monitoring. We present here the results obtained with an associated FBG sensor system for the cure monitoring of smart composites. The performance of the embedded FBG sensor smart composite specimens under 3- and 4-point bending conditions are also being investigated. Finally, the performance analysis has been extended to cantilever specimens.read more
Citations
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Dissertation
Structural health monitoring of composite materials with FBG sensors: damage detection and remaining useful life prediction
TL;DR: In this article, the authors evaluated the feasibility of fiber optic based sensors for monitoring the state or structural health of the composite materials from manufacturing phase to service phase continuously, and they used ingress/egress technique to embed the fiber optic sensors.
Proceedings ArticleDOI
Curing residual strain monitoring in different layer of Gr/epoxy laminated composites using embedded optical fiber Bragg grating sensors
TL;DR: In this paper, the authors embedded 4============Bragg Grating (FBG) sensors into different laminae of composite materials to monitor the internal residual strain during the curing process.
Book ChapterDOI
Maintenance and monitoring of composites
Chhugani Tushar,Routray Ralish,M. Rajesh,M. Manikandan,R. Rajapandi,Vishesh Ranjan Kar,Kandasamy Jayakrishna +6 more
TL;DR: This chapter on maintenance and monitoring of composites explains the advantages of implementation of SHM for composite structures and the limitations of present-day nondestructive testing (NDT) methods based on numerous amounts of publications and research carried out by researchers.
Journal ArticleDOI
Online Monitoring Research of Composite Insulator Based on Fibre Bragg Grating Sensor
TL;DR: In this paper, the operational state of composite insulator were online detected by Fibre Bragg Grating (FBG) Sensor during the process of making composite insulators, FBG sensor was embedded in this study, and the results indicate that the area where the flashover occured had high temperature, the silicone rubber surface significantly become black and hard, and had many small cracks.
Journal ArticleDOI
Measurement of Cure Shrinkage Strain of Resin by Optical Fiber Strain Sensors
TL;DR: In this paper, an embedded EFPI sensor was used to measure the cure shrinkage strain of epoxy resins during the cure process and a viscoelastic model was used for FEM analysis of the measured strain.
References
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BookDOI
Fiber optic sensors : an introduction for engineers and scientists
Eric Udd,William B. Spillman +1 more
TL;DR: Udd et al. as discussed by the authors described the emergence of fiber-optic sensor technology and its application in industrial applications, including light sources, sensors, and sensors based on the Sagnac Interferometer and passive ring resonance.
BookDOI
Optical Fiber Sensor Technology
TL;DR: In this article, the authors present an overview of the development of optical fiber sensor technology and its application in the field of temperature measurement and current measurement, as well as other applications.
Proceedings ArticleDOI
Multifunction, distributed optical fiber sensor for composite cure and response monitoring
TL;DR: In this paper, Bragg gratings have been exposed into the core of optical fibers at specific locations to implement distributed, discrete gages for measurement of strain and temperature for composite specimen curing and bending.
Proceedings ArticleDOI
Comparative study of optical fiber cure-monitoring methods
TL;DR: In this paper, a comparative study was conducted for different types of optical fiber sensor developed to monitor the cure of an epoxy resin system. And the advantages and disadvantages of these three methods are discussed.