Shape evolution and characteristics of carbon fiber reinforced polymer surface in laser ablation

Zhao, Zejia; Liu, Xin; Yang, Jiaxing; Pan, Wenfeng; Li, Yang; Liang, Fei; Tian, Ye; Liu, Lisa; Song, Feng

doi:10.1016/j.vacuum.2023.112572

Cited by 16 publications

(2 citation statements)

References 39 publications

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“…Based on the aforementioned process parameters such as laser frequency and scanning speed, combined with eqn (2)–(4), 18,19 the number of pulses per single point spot area is approximately 2.1, the lateral spot overlap rate is 63%, and the longitudinal spot overlap rate is 79.3%.…”

Section: Methodsmentioning

confidence: 99%

“…During aircraft skin paint layer aging, major inspections, and maintenance, controlled removal of the aircraft skin paint layer is necessary to comply with corresponding airworthiness regulations and industry standards. 1 Laser cleaning, due to its high environmental safety, cleaning efficiency, accuracy, and advantages such as improved surface wettability and higher tensile shear strength after cleaning, 2 has attracted continuous attention and research from multiple research institutions. 3 Among them, high-frequency pulse lasers represent a widely used industrial laser source for paint removal and have made significant strides in the field of laser cleaning.…”

Section: Introductionmentioning

confidence: 99%

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Research on online monitoring of aircraft skin laser paint removal thickness using standard curve method and PCA-SVR based on LIBS

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Li,

Qian

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research on online monitoring of aircraft skin laser paint removal thickness using standard curve method and PCA-SVR based on LIBS

Yang,

Li,

Qian

et al. 2024

Anal. Methods

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show abstract

Enhancing durable electrical conductivity in multi‐walled carbon nanotubes‐epoxy composites via laser repetition rate nanojoining for flexible electronics

Barayavuga,

Jianlei,

wei

et al. 2024

J of Applied Polymer Sci

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With the development of nanotechnology, laser matter interaction has become intriguing for many applications, including the manufacturing of flexible electronics to improve interface behaviors. Employing high laser repetition rate nanojoining transfer patterning, this study ensures the robust and consistent stability of electrical properties of MWCNTs. This procedure meticulously eliminates contaminants from the interface between flexible PET substrates and carbon nanotube‐containing epoxy, significantly influencing the degree of alteration in composite material and interface behaviors. By increasing the laser repetition rate from the original sample to the sample irradiated by a laser with a repetition rate of 80 kHz, the defect concentration in carbon nanotubes decreases from 0.448 × 106/nm2 to 0.39376 × 106/nm2, respectively. The relationship between defect concentration and electrical conductivity in semiconductor carbon nanotubes under laser irradiation is multifaceted and context‐dependent. Optimizing the laser repetition rate is crucial in defining the kind and density of semiconductor carbon nanotubes. This study found an electrical conductivity of 3.6799 × 10−4 S/m at a laser repetition rate of 80 kHz. Laser ablation nanojoining with a high laser repetition rate is poised to become a key recycling method for plastic materials in future industries. When MWCNTs are used in processing new materials, this method not only enhances the electrical and mechanical properties of recycled plastics but also creates high‐performance composites with added value. Additionally, the quick nature of this process helps minimize toxicity in material processing by reducing exposure time and the need for harmful chemicals. These composites exhibit superior properties suitable for advanced applications such as flexible electronics, sensors, and nanocomposite materials, contributing to both sustainability and economic value in various industrial sectors.

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Eco‐efficient recycling of carbon fibers from CFRP waste: A two‐step strategy by nanosecond pulsed laser

Li,

Yang,

Teng

et al. 2024

Polymer Composites

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The accumulation of CFRP waste poses significant environmental challenges, necessitating the development of green and efficient recycling technologies. This study employs a nanosecond pulse laser (λ = 1064 nm) to develop a two‐step laser recycling method (LRM) for CFRP. By setting stepped process parameters, the method sequentially completes the separation and cleaning of the CFRP layers, recovering carbon fibers that retain their original weave structure in just 147 s. The study delves into the characteristics of the products from the rapid laser pyrolysis of the epoxy resin matrix and unveils the interaction mechanisms between the pyrolysis products and recycled carbon fiber (rCF). The study utilized MATLAB to simulate the effects of defocusing on the distribution of laser energy and proposed an optimization strategy that balances product quality with efficiency. The results indicate that laser‐induced thermal decomposition leads to unique microscopic damage patterns in rCF, including microcracks, etching, and delamination. Cleanliness and resin removal rate serve as crucial indicators for quantitatively optimizing the process. The optimized LRM increased efficiency by 110.20% and achieved a resin removal rate of 97.92%, while maintaining rCF tensile strength and modulus retention rates at 93.38% and 105.77%, respectively. The energy consumption was only 13.77% of that required to produce virgin carbon fibers. The LRM operates under mild conditions without the need for harsh reaction conditions, enabling ultra‐fast on‐site recycling and offering a promising solution to the challenges of CFRP waste recycling.Highlights Using lasers for rapid delamination and cleaning of CFRP carbon fiber layers. The type and quantity of pyrolysis products significantly affect recovery quality. Laser‐induced resin pyrolysis oxidation damages carbon fibers. Laser energy compensation and defocusing strategies balance efficiency and quality.

show abstract

Shape evolution and characteristics of carbon fiber reinforced polymer surface in laser ablation

Cited by 16 publications

References 39 publications

Research on online monitoring of aircraft skin laser paint removal thickness using standard curve method and PCA-SVR based on LIBS

Research on online monitoring of aircraft skin laser paint removal thickness using standard curve method and PCA-SVR based on LIBS

Enhancing durable electrical conductivity in multi‐walled carbon nanotubes‐epoxy composites via laser repetition rate nanojoining for flexible electronics

Eco‐efficient recycling of carbon fibers from CFRP waste: A two‐step strategy by nanosecond pulsed laser

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