Non-destructive evaluation of damage level in CFRP structures via real-time self-sensing technique

So Young Oh; Young-Bin Park

doi:10.1117/12.2656587

18 April 2023 Non-destructive evaluation of damage level in CFRP structures via real-time self-sensing technique

So Young Oh, Young-Bin Park

Proceedings Volume 12487, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII; 124871C (2023) https://doi.org/10.1117/12.2656587
Event: SPIE Smart Structures + Nondestructive Evaluation, 2023, Long Beach, California, United States

Conference Poster

Abstract

Electromechanical properties of carbon fibers enable non-destructive evaluation (NDE) of carbon-fiber-reinforced plastic (CFRP) structures by monitoring electrical resistance in real-time. This NDE technique is named as ‘self-sensing’, as it employs the material’s intrinsic features like human nerves. This technique was applied to evaluate the size of damage in CFRP samples. Electrical resistance measured in real-time during machining increasing size of concentric circles was analyzed, and polynomic correlations were identified. To ensure reliability and take uncertainties account, probability-based tools, Markov chain Monte Carlo and Bayesian algorithm, were applied. The potential applicability of the established system to repeated impact loads, considering damage progression due to unexpected strikes in real applications, was also verified.

Citation Download Citation

So Young Oh and Young-Bin Park "Non-destructive evaluation of damage level in CFRP structures via real-time self-sensing technique", Proc. SPIE 12487, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XVII, 124871C (18 April 2023); https://doi.org/10.1117/12.2656587

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