Evaluation of Different Non-destructive Testing Methods to Detect Imperfections in Unidirectional Carbon Fiber Composite Ropes

Online monitoring of carbon fiber reinforced plastic (CFRP) ropes requires non-destructive testing (NDT) methods capable of detecting multiple damage types at high inspection speeds. Three NDT methods are evaluated on artificial and realistic imperfections in order to assess their suitability for on...

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Bibliographic Details
Published in:Journal of nondestructive evaluation 2019-03, Vol.38 (1), p.1-12, Article 23
Main Authors: Antin, Kim-Niklas, Machado, Miguel A., Santos, Telmo G., Vilaça, Pedro
Format: Article
Language:English
Subjects:
Carbon fiber reinforced plastics
Carbon fibers
Characterization and Evaluation of Materials
Classical Mechanics
Control
Damage assessment
Damage detection
Defects
Destructive testing
Dynamical Systems
Eddy current testing
Eddy currents
Electrical resistivity
Engineering
Inspection
Monitoring
Nondestructive testing
Rope
Solid Mechanics
Stress analysis
Thermography
Transducers
Ultrasonic testing
Vibration
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Summary:Online monitoring of carbon fiber reinforced plastic (CFRP) ropes requires non-destructive testing (NDT) methods capable of detecting multiple damage types at high inspection speeds. Three NDT methods are evaluated on artificial and realistic imperfections in order to assess their suitability for online monitoring of CFRP ropes. To support testing, the microstructure and electrical conductivity of a carbon fiber rope is characterized. The compared methods are thermography via thermoelastic stress analysis, ultrasonic testing with commercial phased array transducers, and eddy current testing, supported by tailor-made probes. While thermoelastic stress analysis and ultrasonics proved to be accurate methods for detecting damage size and the shape of defects, they were found to be unsuitable for high-speed inspection of a CFRP rope. Instead, contactless inspection using eddy currents is a promising solution for real-time online monitoring of CFRP ropes at high inspection speeds.
ISSN:0195-9298
1573-4862
DOI:10.1007/s10921-019-0564-y