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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Journal ArticleDOI
Techniques for Interface Stress Measurements within Prosthetic Sockets of Transtibial Amputees: A Review of the Past 50 Years of Research
TL;DR: The operating principles, advantages, and disadvantages of conventional and emerging techniques used for interface stress measurements inside transtibial sockets are reviewed, providing valuable insights into the latest trends in socket designs and the crucial considerations for effective stress measurement tools that lead to a functional prosthetic socket.
Journal ArticleDOI
Analysis and optimization of temperature distribution in carbon fiber reinforced composite materials during microwave curing process
TL;DR: In this paper, the influence of ply orientation and thickness on through-thickness temperature distribution of carbon fiber reinforced composite laminates was investigated in two different types of epoxy systems.
Journal ArticleDOI
Simultaneous measurement of temperature and strain in glass fiber/epoxy composites by embedded fiber optic sensors: I. Cure monitoring
TL;DR: In this paper, the use of fiber optic sensors for real-time monitoring of the cure kinetics of GFRP composites is explored, which allows simultaneous measurement of both temperature and strain by monitoring the change in reflected wavelength from two coupled fiber Bragg grating (FBG) sensors that have been embedded into the composite laminate.
Book
Embedded sensors in layered manufacturing
TL;DR: In this article, an embedding sequence was developed capable of embedding fiber sensors into parts made of metal alloys with high melting temperatures, which can be used to gain data for validating or improving designs during prototype stage or to obtain information on the performance and structural integrity of components in service.
Journal ArticleDOI
Characterization of process-induced defects in automated fiber placement manufacturing of composites using fiber Bragg grating sensors
TL;DR: With the increasing use of automated fiber placement method for manufacturing highly precise bespoke composite components in the aerospace industry, the level of manufacturing defects within the la... as mentioned in this paper, the authors of this paper
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.