Experimental probe into the femtosecond laser ablation thresholds in carbon fiber reinforced polymer and assessment of the measurement theories

Zhao, Jiewen; Ji, Pengfei; Lin, Gen; Li, Xin; Zhang, Xueqiang

doi:10.1002/pc.27486

Cited by 7 publications

(2 citation statements)

References 46 publications

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“…The study of the interaction between lasers and materials holds immense significance. It not only enhances the understanding of the laser‐material interaction theory but also promotes the application and advancement of laser technology 11,12 …”

Section: Introductionmentioning

confidence: 99%

Assessment of continuous laser ablation model for lightweight quartz fiber reinforced phenolic composite

Yan,

Jin,

Pan

et al. 2024

Polymer Composites

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A comprehensive investigation into the interaction between a continuous wave (CW) laser and lightweight quartz fiber reinforced phenolic (LQFRP) composite would provide valuable insights into the characteristics and performance of ablation. To simulate the CW laser ablation of LQFRP composite, a 2D symmetrical element model was developed, incorporating the heat conduction equation, resin pyrolysis mechanism, and deformed geometry module. This model was the first to examine the internal pyrolysis degree and gas flow field of LQFRP composite under CW laser irradiation, and its predictions were in reasonable agreement with experimental measurements. Additionally, the model was used to simulate CW laser ablation with varying spot sizes and power densities. The results revealed that during the laser ablation process, an internal high‐pressure zone formed on the side of the ablation hole. The volatilization of SiO2 was identified as the dominant dissipation mechanism for material removal. The width of the ablation hole was positively correlated with the laser spot size, while the depth of the ablation hole was positively correlated with the laser power density.Highlights The model first studied the internal pyrolysis degree and flow field of LQFRP composite under laser irradiation. The volatilization of SiO2 was identified as the dominant dissipation mechanism for material removal. An internal high‐pressure zone formed on the side of the ablation hole during the laser ablation process. The width of the ablation hole was positively correlated with the laser spot size, while the depth of the ablation hole was positively correlated with the laser power density.

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Section: Introductionmentioning

confidence: 99%

Assessment of continuous laser ablation model for lightweight quartz fiber reinforced phenolic composite

Yan,

Jin,

Pan

et al. 2024

Polymer Composites

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show abstract

“…Zhao reached similar conclusions regarding the mechanism as the previous studies and quantitatively investigated the ablation threshold of carbon fiber reinforced plastic (CFRP) by measuring the ablation area. 27 In summary, both domestic and international research have delved into the basic parameters of laser surface treatment, yet there is still a lack of exploration into the cross-effects among fundamental process parameters and secondary parameters.…”

Section: Introductionmentioning

confidence: 99%

Process optimization and performance verification of CFRP laser surface modification

Li,

Wang,

Wang

et al. 2024

Polymer Composites

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Adhesive bonding has gradually replaced mechanical connections as the primary method for composite material bonding, with surface quality being the key factor determining the effectiveness of composite material adhesion. Laser surface treatment, known for its green and precise characteristics, has garnered widespread attention from both academia and industry. However, the process parameters of laser surface treatment are complex, efficiency is low, and the mechanism remains unclear. This paper, based on the response surface methodology (RSM), investigates the influence of laser secondary parameters on the resin removal rate of carbon fiber reinforced polymer/plastic (CFRP) surfaces and the impact of defocusing on surface treatment efficiency. The results indicate that when the total laser energy density (Et) is 69 J/cm2, the overlap ratio in the warp direction (OLs) is 76%, and the overlap ratio in the weft direction (OLh) is 85%, the surface tensile shear strength increases by 90.59% and 27.77% compared to the original surface and polished surface, respectively. When the defocus distance is +8 mm, the efficiency of laser surface treatment is 2.25 times that of non‐defocus, with minimal impact on mechanical performance. The surface treatment mechanism, with changes in Et, primarily involves the pure thermal decomposition of the resin matrix in an oxygen‐free environment, oxidative decomposition, and the synergistic action of the decomposition products' oxidation. Through the coupled optimization of laser process parameters, this work enhances the efficiency and effectiveness of composite material adhesive surface treatment, promoting the engineering application of laser technology.Highlights By establishing a response surface model, the study elucidated the impact patterns of laser secondary parameters (overlap rates in the warp and weft directions, total energy density) on the resin removal rate of CFRP surfaces. Based on the laser surface treatment phenomena at different total energy densities, the study analyzed and revealed the mechanism of near‐infrared (1064 nm) laser resin removal from CFRP surfaces. By increasing the spot size through defocusing, the efficiency of laser surface treatment was enhanced, and the impact on the interfacial properties of CFRP after defocused treatment was validated.

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Rapid surface modification of CFRP via femtosecond laser-assisted by chemical approach to enhance adhesive performance

Yuan,

Guo,

et al. 2025

Composites Communications

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Experimental probe into the femtosecond laser ablation thresholds in carbon fiber reinforced polymer and assessment of the measurement theories

Cited by 7 publications

References 46 publications

Assessment of continuous laser ablation model for lightweight quartz fiber reinforced phenolic composite

Assessment of continuous laser ablation model for lightweight quartz fiber reinforced phenolic composite

Process optimization and performance verification of CFRP laser surface modification

Rapid surface modification of CFRP via femtosecond laser-assisted by chemical approach to enhance adhesive performance

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