Investigation of Mechanical Properties and Failure Behavior of CFRP Filament-Wound Composites Using an Acoustic Emission-Based Methodology and Numerical Simulation 


Vol. 24,  No. 2, pp. 693-708, Feb.  2023
10.1007/s12221-023-00050-w


  Abstract

Filament wound composites have a continuous structure, and to improve the mechanical behavior of these structures, it is necessary to identify the damage mechanisms. The focus of this study is to investigate the mechanical properties and failure analyses of filament-wound carbon/epoxy composite samples under three-point bending using the acoustic emission technique. To investigate this, first, using a filament winding machine, composite plates and composite structures with a square cross section were fabricated. Afterward, composite specimens were tested and most independent elastic constants, strength properties, and shear properties were obtained. Then, a three-point bending testing of filament-wound composite specimens was performed, and to identify the damage mechanisms the analysis of acoustic emission signals recorded during loading was also implemented. The acoustic emission signals of composite samples were classified using hierarchical and wavelet transform methods and the evolution of different damage mechanisms was investigated. Eventually, composite samples were simulated in ABAQUS software, and to consider the damage mechanisms, the continuum damage mechanics model was considered as a user material subroutine in simulation. The experimental results showed that the received acoustic emission signals matched very well with the mechanical behavior, and the acoustic response of the composite samples to the loading includes three regions. The amplitude range of the first, second, and third clusters was obtained between 3574, 51100, and 5584 dB, respectively. Finally, in the clustering method, the frequency range of fiber/matrix debonding and fiber breakage were characterized between 200 and 250 and over 380 kHz, respectively.

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  Cite this article

[IEEE Style]

S. Alimirzaei, M. A. Najafabadi, A. Nikbakht, "Investigation of Mechanical Properties and Failure Behavior of CFRP Filament-Wound Composites Using an Acoustic Emission-Based Methodology and Numerical Simulation," Fibers and Polymers, vol. 24, no. 2, pp. 693-708, 2023. DOI: 10.1007/s12221-023-00050-w.

[ACM Style]

Sajad Alimirzaei, Mehdi Ahmadi Najafabadi, and Ali Nikbakht. 2023. Investigation of Mechanical Properties and Failure Behavior of CFRP Filament-Wound Composites Using an Acoustic Emission-Based Methodology and Numerical Simulation. Fibers and Polymers, 24, 2, (2023), 693-708. DOI: 10.1007/s12221-023-00050-w.

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pISSN : 1229 - 9197
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