Experimental study on fracture behavior of preloaded CFRC laminate under laser irradiation

Han Yongchao; Wei Chenghua; Zhang Ran; Wang Jiawei; Lü Yuwei

doi:10.11884/HPLPB202234.210329

Volume 34 Issue 1

Jan. 2022

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Han Yongchao, Wei Chenghua, Zhang Ran, et al. Experimental study on fracture behavior of preloaded CFRC laminate under laser irradiation[J]. High Power Laser and Particle Beams, 2022, 34: 011011. doi: 10.11884/HPLPB202234.210329

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Han Yongchao, Wei Chenghua, Zhang Ran, et al. Experimental study on fracture behavior of preloaded CFRC laminate under laser irradiation[J]. High Power Laser and Particle Beams, 2022, 34: 011011. doi: 10.11884/HPLPB202234.210329

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Experimental study on fracture behavior of preloaded CFRC laminate under laser irradiation

doi: 10.11884/HPLPB202234.210329

State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology, Xi'an 710024, China

Received Date: 2021-07-30
Rev Recd Date: 2021-12-26

Available Online: 2021-12-31

Publish Date: 2022-01-15

Abstract

Abstract

To predict the failure time of carbon fiber/ epoxy resin reinforced composite laminates under the combined action of laser and mechanical load, different laser power density (70–210 W/cm²), different pre-stress levels (50% and 70% of tensile strength) were studied experimentally. The failure mechanism of 2 mm laminates under different spot sizes (70% and 100% of the width of tensile specimens) was obtained, and the influence rule of different influencing factors on fracture time was obtained. The results show that the failure mechanism of pre-loaded laminates is the pyrolysis of the substrate material of epoxy resin, the oxidation fracture of the fiber and the brittle fracture of the residual structure of the back surface. Under certain pre-stress conditions, the fracture time and the irradiated laser power density are exponential. The pre-stress level has a significant effect on the fracture time.
- laser,
- preloaded,
- CFRC laminate,
- fracture

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References(24)

References

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