Enhancing Structural Health Monitoring with Acoustic Emission Sensors: A Case Study on Composites under Cyclic Loading

This study conducts an in-depth analysis of the failure behavior of woven GFRP under cyclic loading, leveraging AE sensors for monitoring damage progression. Utilizing destructive testing and AE methods, we observed the GFRP's response to varied stress conditions. Key findings include identifyi...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2024-01, Vol.24 (2), p.371
Main Authors: Jung, Doyun, Lee, Jeonghan
Format: Article
Language:English
Subjects:
Accelerometers
acoustic emission testing
Acoustics
b-value analysis
Composite materials
composites
Concrete
Cracks
Epoxy resins
Industrial plant emissions
Nuclear energy
Nuclear facilities
Nuclear power plants
Sensors
Stress concentration
structural integrity assessment
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Summary:This study conducts an in-depth analysis of the failure behavior of woven GFRP under cyclic loading, leveraging AE sensors for monitoring damage progression. Utilizing destructive testing and AE methods, we observed the GFRP's response to varied stress conditions. Key findings include identifying distinct failure modes of GFRP and the effectiveness of AE sensors in detecting broadband frequency signals indicative of crack initiation and growth. Notably, the Felicity effect was observed in AE signal patterns, marking a significant characteristic of composite materials. This study introduces the I -value, based on statistical parameters, to effectively track crack development from inception to growth. The I -values potential for assessing structural integrity in composite materials is highlighted, with a particular focus on its variation with propagation distance and frequency-dependent attenuation. Our research reveals challenges in measuring different damage modes across frequency ranges and distances. The effectiveness of I -values, combined with the challenges of propagation distance, underscores the need for further investigation. Future research aims to refine assessment metrics and improve crack evaluation methods in composite materials, contributing to the field's advancement.
ISSN:1424-8220
1424-8220
DOI:10.3390/s24020371