Experimental investigation on thermal ablation of carbon-fiber/epoxy composite irradiated by continuous wave laser

He, Minbo; Ma, Zhiliang; Chen, Linzhu; Lin, Xinwei; Zhou, Menglian

doi:10.1117/12.2178228

Cited by 3 publications

(2 citation statements)

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“…As shown in Figure 6c, a bright flame appears on the surface during irradiation caused by the pyrolysis of the resin and the combustion of small-molecule products in the air; the resin releases combustible gases such as CO and H 2 [36]. Black smoke can be produced when the composite is on fire, which has a weakening effect on the energy of laser [37]. After irradiation ends, a flame still exists on the surface (Figure 6d), which is in good agreement with the temperature analysis above.…”

Section: Damage Mechanism Analysis Of the Compositementioning

confidence: 99%

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

Tian

et al. 2022

Crystals

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Laser attracts more attention and it could cause material failure by its high energy. Carbon fiber resin composites are widely used in aerospace vehicles experiencing dramatic damage to their surface if exposed to high-energy laser irradiation. The available studies on irradiation behavior are mainly focused on pulsed lasers and bulk composites, and investigations of thin laminar structures under continuous-wave laser irradiation have rarely been reported. In this study, the damage behavior of laminar carbon fiber epoxy resin composites (CFE composites) was studied. Using a threshold model of resin pyrolysis, CFE composite is observed to be damaged at 0.18 s when irradiated at 100 W/cm2, and if the laser power density is increased to 200 W/cm2 for 2 s, no resin remains on the fiber surface, which is now completely exposed. With an increase in power density and irradiation time, the ablation rate always shows an upward trend: the ablation region expands and the separation of layers in the interior appears, which can reach 0.01156 g/s when irradiated at 100 W/cm2 for 5 s. The damage mechanism of CFE composite was also revealed by the temperature evolution data, thermogravimetric analysis, and composition change.

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Section: Damage Mechanism Analysis Of the Compositementioning

confidence: 99%

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

Tian

et al. 2022

Crystals

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“…At higher temperatures, the composite materials will turn into the process of sublimation. The complex response of composite to laser has a relation with some factors, including laser parameters [ 9 , 10 , 11 , 12 , 13 , 14 ], such as power density, spot size and irradiation time; characters themselves [ 13 ], such as fiber layup sequence and thickness; and environment conditions [ 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 ], such as vacuum, atmosphere environment and tangential flow.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on Ablation Behaviors of CFRP Laminates in an Atmospheric Environment Irradiated by Continuous Wave Laser

et al. 2022

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In order to understand the ablation behaviors of CFRP laminates in an atmospheric environment irradiated by continuous wave laser, CFRP laminates were subjected to a 1080-nm continuous wave laser (6-mm laser spot diameter), with different laser power densities carried out in this paper. The internal delamination damage in CFRP laminates was investigated by C-Scan. The rear- and front-face temperature of CFRP laminates were monitored using the FLIR A 655 sc infrared camera, and the rear-face temperature was monitored by K type thermocouples. The morphology of ablation damage, the area size of the damaged heat affected zone (HAZ), crater depth, thermal ablation rate, mass ablation rate, line ablation rate, etc., of CFRP laminates were determined and correlated to the irradiation parameters. It is found that the area size of the damage HAZ, mass ablation rate, line ablation rate, etc., increased as the laser power densities. The dimensionless area size of the damaged HAZ decreased gradually along the thickness direction of the laser irradiation surface.

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Shift of the laser ablation center on CFRP induced by the vortex in the boundary layer of tangential airflow

Nan

Pan

et al. 2019

Int J Adv Manuf Technol

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Experimental investigation on thermal ablation of carbon-fiber/epoxy composite irradiated by continuous wave laser

Cited by 3 publications

References 0 publications

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

Laser Irradiation Behavior of Carbon Fiber Epoxy Resin Composites with Laminar Structure

Experimental Investigation on Ablation Behaviors of CFRP Laminates in an Atmospheric Environment Irradiated by Continuous Wave Laser

Shift of the laser ablation center on CFRP induced by the vortex in the boundary layer of tangential airflow

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