Optical fibre sensing in metals by embedment in 3D printed metallic structures

Maier, Robert R. J.; Havermann, Dirk; Schneller, Oliver; Mathew, Jinesh; Polyzos, D.; MacPherson, William N.; Hand, Duncan Paul

doi:10.1117/12.2064886

Cited by 8 publications

(3 citation statements)

References 12 publications

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“…Embedding of fiber optic sensors in metallic materials has been investigated by many researchers [ 8 , 86 , 87 , 88 , 89 , 90 ]. One of the objectives for this type of materials is to embed an FBG array optical fibers in multiple direction covering 3D space inside the material.…”

Section: Materials Behaviormentioning

confidence: 99%

“…Maier et al [ 87 ] used additive manufacturing to embed sensors in metallic structures. These embedded sensors would be capable of operating at extremely high temperatures by utilizing regenerated fiber Bragg gratings and in-fiber Fabry-Perot cavities [ 87 ]. Taylor et al [ 88 ] and Lee et al [ 89 ] used casting to embed a fiber Fabry-Perot Interferometer into aluminum.…”

Section: Materials Behaviormentioning

confidence: 99%

See 1 more Smart Citation

Fiber-Embedded Metallic Materials: From Sensing towards Nervous Behavior

Saheb

Mekid

2015

Materials

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Embedding of fibers in materials has attracted serious attention from researchers and has become a new research trend. Such material structures are usually termed “smart” or more recently “nervous”. Materials can have the capability of sensing and responding to the surrounding environmental stimulus, in the former, and the capability of feeling multiple structural and external stimuli, while feeding information back to a controller for appropriate real-time action, in the latter. In this paper, embeddable fibers, embedding processes, and behavior of fiber-embedded metallic materials are reviewed. Particular emphasis has been given to embedding fiber Bragg grating (FBG) array sensors and piezo wires, because of their high potential to be used in nervous materials for structural health monitoring. Ultrasonic consolidation and laser-based layered manufacturing processes are discussed in detail because of their high potential to integrate fibers without disruption. In addition, current challenges associated with embedding fibers in metallic materials are highlighted and recommendations for future research work are set.

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Section: Materials Behaviormentioning

confidence: 99%

Section: Materials Behaviormentioning

confidence: 99%

Fiber-Embedded Metallic Materials: From Sensing towards Nervous Behavior

Saheb

Mekid

2015

Materials

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“…Selective laser melting (SLM) has been used to embed FBG sensors; however, the residual stresses left by this process tend to induce sensor damage along with poor coupling between the sensor and matrix [14,15]. Some investigations have demonstrated better AM embedment through the use of fibers with specialized coatings [16,17,18].…”

Section: Introductionmentioning

confidence: 99%

Detection of Crack Initiation and Growth Using Fiber Bragg Grating Sensors Embedded into Metal Structures through Ultrasonic Additive Manufacturing

Chilelli

Schomer

Dapino

2019

Sensors

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Structural health monitoring (SHM) is a rapidly growing field focused on detecting damage in complex systems before catastrophic failure occurs. Advanced sensor technologies are necessary to fully harness SHM in applications involving harsh or remote environments, life-critical systems, mass-production vehicles, robotic systems, and others. Fiber Bragg Grating (FBG) sensors are attractive for in-situ health monitoring due to their resistance to electromagnetic noise, ability to be multiplexed, and accurate real-time operation. Ultrasonic additive manufacturing (UAM) has been demonstrated for solid-state fabrication of 3D structures with embedded FBG sensors. In this paper, UAM-embedded FBG sensors are investigated with a focus on SHM applications. FBG sensors embedded in an aluminum matrix 3 mm from the initiation site are shown to resolve a minimum crack length of 0.286 ± 0.033 mm and track crack growth until near failure. Accurate crack detection is also demonstrated from FBGs placed 6 mm and 9 mm from the crack initiation site. Regular acrylate-coated FBG sensors are shown to repeatably work at temperatures up to 300 ∘C once embedded with the UAM process.

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