Sensors for process and structural health monitoring of aerospace composites: A review

Rocha, Helena; Semprimoschnig, Christopher; Nunes, João Arriscado

doi:10.1016/j.engstruct.2021.112231

Cited by 160 publications

(74 citation statements)

References 90 publications

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“…As a solution, they introduced an image processing software to evaluate the sample, which eventually eliminated the human bias and provided a more rigorous, systematic evaluation procedure. The most common disadvantage of film sensors which was highlighted by Rocha et al [27] is the poor adhesive bonding of the sensors to the host structure. In the case of film sensors that are attached to the CRFP, by means of an adhesive layer (e.g.…”

Section: Adhesion Classificationmentioning

confidence: 99%

“…Furthermore, in the case of CFRP which are fabricated using thermoplastics, the presence of the fibers within the matrix will cause a decrease in the elongation as the fibers hold the structure firmly in place [48]. Rocha et al [27] summarized the specifications for SHM sensors in five criteria, namely:…”

Section: Sensor Performance After Induced Strainmentioning

confidence: 99%

“…In comparison with the criteria by Rocha et al [27], the integration of the printed sensor within the CFRP was successfully done with inkjet printing technology, and the sintering optimization ensured a high-performance sensor in a time-efficient manner. Moreover, the fragility aspect of integrating the sensors was circumvented by using functional inkjet inks, also ensuring the light-weighting and reduced dimensionality of the overall structure.…”

Section: Sensor Performance After Induced Strainmentioning

confidence: 99%

“…Rocha et al [27] emphasized on the delamination of film sensors to their host structure as the most common failure point, then lack of sensing performance and signal fidelity. This can be overcome by inkjet printing the sensors directly on the structure.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Fabrication of Novel Inkjet-Printed Silver Nanoparticle Sensors on Carbon Fiber Reinforced Nylon Composites

et al. 2021

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Inkjet-printing technology enables the contactless deposition of functional materials such as conductive inks on surfaces, hence reducing contamination and the risk of substrate damage. In printed electronics, inkjet technology offers the significant advantage of controlling the volume of material deposited, and therefore the fine-tuning of the printed geometry, which is crucial for the performance of the final printed electronics. Inkjet printing of functional inks can be used to produce sensors to detect failure of mechanical structures such as carbon fiber reinforced composite (CFRC) components, instead of using attached sensors, which are subject to delamination. Here, silver nanoparticle-based strain sensors were embedded directly in an insulated carbon-fiber laminate by using inkjet printing to achieve an optimized conductive and adhesive geometry, forming a piezoresistive strain sensor. Following the inkjet-printing optimization process, the sensor conductivity and adhesion performance were evaluated. Finally, the sensor was quantified by using a bending rig which applied a pre-determined strain, with the response indicating an accurate sensitivity as the resistance increased with an increased strain. The ability to embed the sensor directly on the CFRC prevents the use of interfacial adhesives which is the main source of failure due to delamination.

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Section: Adhesion Classificationmentioning

confidence: 99%

Section: Sensor Performance After Induced Strainmentioning

confidence: 99%

Section: Sensor Performance After Induced Strainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Integrated Fabrication of Novel Inkjet-Printed Silver Nanoparticle Sensors on Carbon Fiber Reinforced Nylon Composites

et al. 2021

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“…Ultrasonic sensors are well-developed instruments and hold a long tradition. They are used for non-destructive, non-invasive and accurate measurements of technical and bio-liquids with a broad variety of chemical/biological compositions [ 1 ] as well as for many other applications with traditional and new transducer devices, just recently e.g., [ 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 ]. In contrast to acoustic microsensors such as the quartz crystal microbalance (QCM), they apply longitudinal acoustic waves which are able to propagate through the whole volume of matter.…”

Section: Introductionmentioning

confidence: 99%

Periodic Tubular Structures and Phononic Crystals towards High-Q Liquid Ultrasonic Inline Sensors for Pipes

Mukhin

Lücklum

2021

Sensors

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The article focuses on a high-resolution ultrasound sensor for real-time monitoring of liquid analytes in cylindrical pipes, tubes, or capillaries. The development of such a sensor faces the challenges of acoustic energy losses, including dissipation at liquid/solid interface and acoustic wave radiation along the pipe. Furthermore, we consider acoustic resonant mode coupling and mode conversion. We show how the concept of phononic crystals can be applied to solve these problems and achieve the maximum theoretically possible Q-factor for resonant ultrasonic sensors. We propose an approach for excitation and measurement of an isolated radial resonant mode with minimal internal losses. The acoustic energy is effectively localized in a narrow probing area due to the introduction of periodically arranged sectioned rings around the tube. We present a sensor design concept, which optimizes the coupling between the tubular resonator and external piezoelectric transducers. We introduce a 2D-phononic crystal in the probing region for this purpose. The Q-factor of the proposed structures show the high prospects for phononic crystal pipe sensors.

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Monitoring Structural Health Using Digital Twin

Pillai

Iyengar

Pathak

2022

Digital Twin Technology

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Sensors for process and structural health monitoring of aerospace composites: A review

Cited by 160 publications

References 90 publications

Integrated Fabrication of Novel Inkjet-Printed Silver Nanoparticle Sensors on Carbon Fiber Reinforced Nylon Composites

Integrated Fabrication of Novel Inkjet-Printed Silver Nanoparticle Sensors on Carbon Fiber Reinforced Nylon Composites

Periodic Tubular Structures and Phononic Crystals towards High-Q Liquid Ultrasonic Inline Sensors for Pipes

Monitoring Structural Health Using Digital Twin

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