Structural Health Monitoring for Composite Materials

Cai, Jing; Qiu, Lei; Yuan, Shenfang; Shi, Lihua; Li, Peipei; Liang, Dong

doi:10.5772/48215

Cited by 39 publications

(34 citation statements)

References 53 publications

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“…The popular solution is to construct a structural health monitoring (SHM) system based on optical fibres with Bragg gratings. Fibre Bragg grating is formed by inducing a periodic modulation of the refractive index in the core of a single mode optical fibre [5,6]. Thus, FBG filters a broadband light, which is transmitted into the fibre core, reflecting light at a single wavelength [7,8].…”

Section: Optical Fibres With Bragg Gratings Sensorsmentioning

confidence: 99%

Analysis of Fibre Bragg Gratings Sensors Optimal Placement for Monitoring of Damage Propagation in Laminate Composites

Tashkinov¹

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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Section: Optical Fibres With Bragg Gratings Sensorsmentioning

confidence: 99%

Analysis of Fibre Bragg Gratings Sensors Optimal Placement for Monitoring of Damage Propagation in Laminate Composites

Tashkinov¹

2016

Proceedings of the VII European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS Congress 2016)

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“…in case of one sided access systems it is the plane defined by the exciting and sensing elements), the measurement is characterized as point measurement. When the space is expanded (not localized) on the same plane in a line or area, the measurement can be distinguished correspondingly to lineal meas- [80] and Structural Health Monitoring (SHM) [81]. Such potential is intriguing in that a single system would cover a larger portion of the life-span of a composite part.…”

Section: Implementation Assessment Of Sensing Systemsmentioning

confidence: 99%

Monitoring the production of FRP composites: A review of in-line sensing methods

Konstantopoulos¹,

Fauster²,

Schledjewski³

2014

Express Polym. Lett.

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Abstract.Composites manufacturing is characterized by many degrees of freedom. Different materials, geometries and thermo-dynamical conditions contribute to a behavior that is difficult to predict. Monitoring the running process (in-line monitoring) eliminates the need for prediction; real time data provided by appropriate sensing systems can be used in the direction of process optimization, quality upgrade or material characterization. The aim of the review at hand is to record and discuss the latest progress in the field of in-line composites monitoring with a focus on Fiber Reinforced Polymericbased (FRP) composite structures. Summaries of each sensor's principles of operation, appropriate association with polymer/composite properties detection, brief descriptions of representative studies, a critical overview of implementation aspects and discussion on the upcoming trends, contribute in constructing a complete picture.

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“…Unlike NDT, a real-time and online damage detection can be achieved in SHM. The advantages of SHM include improving reliability and safety, reducing inspection time and improvising designs of composite materials [12]. These methods are carried out using complicated, heavy equipments and are labor-extensive and time-consuming especially for large-scale structures.…”

Section: Non-destructive Testing Methodsmentioning

confidence: 99%

“…The initiation of flaws within or on the composite's surface and the propagation of the flaw through the composite volume, leading to an ultimate failure is complicated. Describing a damage evolution and fracture behavior in composites remains a challenging task [12,13]. On impact, matrix cracks can appear, grow and interact, leading to delamination.…”

Section: Structural Health Monitoringmentioning

confidence: 99%

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Use of Optical Fibers for Structural Health Monitoring of Aircraft Components

Anand¹

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Structural Health Monitoring (SHM) systems for composites are being developed to improve the in-flight monitoring and safety of new aircraft structures. One of the emerging techniques for SHM which is becoming popular in the aircraft industry involves the use of optical fiber sensors due to their ease of integration, resistance to electromagnetic interference and low signal attenuation over long distances. This thesis describes a validated technique for optical fiber embedment and extraction of data from optical fiber data to measure strain.In this research, a novel method to address ingress/egress points of optical fiber has been developed; a surface mounted component has been designed and manufactured using rapid prototyping for the protection of embedded optical fibers at the ingress/egress points. This single component can provide safety and integrity to optical fibers during manufacturing as well as cutting operation. The thesis also focuses on the study of mechanical strength of composites with embedded optical fibers.Composite panels were manufactured with integrated optical fibers using Vacuum Assisted Resin Transfer Molding. Tensile, flexural and impact tests were conducted on these coupons and their results were compared to identify any effects of the embedded fibers on the part performance. Finally, strain experienced by the material while it was in loading and unloading condition was calculated using integrated optical fiber sensors and the values were compared with extensometer data.iii

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Structural Health Monitoring for Composite Materials

Cited by 39 publications

References 53 publications

Analysis of Fibre Bragg Gratings Sensors Optimal Placement for Monitoring of Damage Propagation in Laminate Composites

Analysis of Fibre Bragg Gratings Sensors Optimal Placement for Monitoring of Damage Propagation in Laminate Composites

Monitoring the production of FRP composites: A review of in-line sensing methods

Use of Optical Fibers for Structural Health Monitoring of Aircraft Components

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