Characterization of Bonding Defects in Fiber-Reinforced Polymer-Bonded Structures Based on Ultrasonic Transmission Coefficient

This research delves into the characterization of the ultrasonic transmission coefficient pertaining to various types of bonding defects in Fiber-Reinforced Polymer (FRP)-bonded structures. Initially, an ultrasonic transmission coefficient calculation model for FRP-bonded structures in a water immer...

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Bibliographic Details
Published inMaterials Vol. 17; no. 5; p. 1080
Main Authors Bian, Zeqi, Wu, Bin, Liu, Bing, Lyu, Yan, Gao, Jie, He, Cunfu
Format Journal Article
LanguageEnglish
Published Switzerland MDPI AG 27.02.2024
MDPI
Subjects
Acoustics
Adhesives
Aluminum
Bond strength
bonded structures
Bonding
Carbon fibers
Coefficient of variation
Composite materials
debonding defects
Defects
Failure
Fiber reinforced plastics
Fiber reinforced polymers
fiber-reinforced polymer
Finite element method
Interfaces
interfacial slip
Mathematical analysis
Methods
Nondestructive testing
Polymer industry
Polymers
Propagation
Simulation
Submerging
ultrasonic transmission coefficient
Water immersion
China
fiber-reinforced polymer
debonding defects
bonded structures
ultrasonic transmission coefficient
interfacial slip
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Summary:This research delves into the characterization of the ultrasonic transmission coefficient pertaining to various types of bonding defects in Fiber-Reinforced Polymer (FRP)-bonded structures. Initially, an ultrasonic transmission coefficient calculation model for FRP-bonded structures in a water immersion environment is established. This model is used to analyze the variation in the ultrasonic transmission coefficient under different defect types, namely intact bonding, interfacial slip, and debonding defects. Subsequently, a frequency domain finite element analysis model of FRP-bonded structures with different defect types is constructed. The simulation validates the accuracy of the theoretical analysis results and concurrently analyzes the variation in the transmission signal when the defects alter. Lastly, an experimental platform for water immersion ultrasonic transmission measurement is set up. The transmission signals under different defect types are extracted through experiments and evaluated in conjunction with theoretical calculations to assess the types of bonding defects.
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ISSN:1996-1944
1996-1944
DOI:10.3390/ma17051080