Effect of Heat Treatment on the Damage and Failure Mechanism of 3D Printed Continuous Fiber Composites Using Acoustic Emission 


Vol. 24,  No. 6, pp. 2117-2132, Jun.  2023
10.1007/s12221-023-00214-8


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  Abstract

Delamination between layers of composite greatly reduces their strength and stiffness, and thus, it is necessary to investigate the heat treatment method of 3D printed continuous fiber-reinforced composites to enhance their interlaminar properties. In this paper, 3D printed composites with different fiber volume fractions were treated at high temperature, and the damage behavior and failure mechanism were analyzed by acoustic emission technology. The dominant frequency of a single waveform was obtained by extracting energy features through wavelet packet transform, and the dominant damage mode of each acoustics emission (AE) event was analyzed and accurately classified. Then, support vector machine algorithm is performed to achieve supervised classification of AE signals. The result shows the maximum load of Specimen A-4 (5% fiber) and B-4 (15% fiber) increased by 83.58% and 86.8%, respectively, after being treated at 180 °C. It can be known that the temperature post-treatment makes the composite have a stronger ability to resist deformation. The temperature treatment will improve the mechanical properties of the composites but simultaneously generate more high-frequency AE signals.

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  Cite this article

[IEEE Style]

Z. Pan, W. Zhou, L. Ma, J. Liu, "Effect of Heat Treatment on the Damage and Failure Mechanism of 3D Printed Continuous Fiber Composites Using Acoustic Emission," Fibers and Polymers, vol. 24, no. 6, pp. 2117-2132, 2023. DOI: 10.1007/s12221-023-00214-8.

[ACM Style]

Zhi‑bo Pan, Wei Zhou, Lian‑hua Ma, and Jia Liu. 2023. Effect of Heat Treatment on the Damage and Failure Mechanism of 3D Printed Continuous Fiber Composites Using Acoustic Emission. Fibers and Polymers, 24, 6, (2023), 2117-2132. DOI: 10.1007/s12221-023-00214-8.

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