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18 April 2022 Strain and damage sensing in fiberglass reinforced composites through LIG interlayers
Jalal Nasser, LoriAnne Groo, Michael Fischer, Henry Sodano
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Proceedings Volume PC12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI; (2022) https://doi.org/10.1117/12.2612353
Event: SPIE Smart Structures + Nondestructive Evaluation, 2022, Long Beach, California, United States
Abstract
Piezoresistive laser induced graphene are embedded within the interlaminar regions of fiberglass composite materials using a treatment-free and scalable transfer-printing process, all while maintaining mechanical properties. Through passive resistance measurements, the multifunctional material is demonstrated to be capable of in-situ tracking of both monotonic and cyclic strain, in addition to detecting distinct damage events under tensile and flexural loading conditions. Furthermore, The LIG interlayers are also shown to enable three-dimensional damage localization in fiberglass composites, along with the monitoring of structural damage progression and accumulation throughout fatigue life. The information can be then combined with smart prognostic algorithms, such as neural networks, in order to predict the onset of catastrophic structural failure.
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Jalal Nasser, LoriAnne Groo, Michael Fischer, and Henry Sodano "Strain and damage sensing in fiberglass reinforced composites through LIG interlayers", Proc. SPIE PC12047, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVI, (18 April 2022); https://doi.org/10.1117/12.2612353
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KEYWORDS
Composites
Multifunctional materials
Structured optical fibers
Environmental sensing
Evolutionary algorithms
Graphene
Neural networks
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