Dr. Xiaoxiao Chen Profile

Dr. Xiaoxiao Chen

at Ningbo Institute of Industrial Technology

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Author

Publications (14)

Proceedings Article | 11 October 2024 Paper

Study on ultrasonic vibration-assisted rotating beam coupled nanosecond laser grooving of SiC ceramics

Yingliang Lin, Xiaoxiao Chen, Qi Rao, Shunquan Shen, Wenwu Zhang

Proceedings Volume 13287, 132871B (2024) https://doi.org/10.1117/12.3039023

KEYWORDS: Laser ultrasonics, Vibration, Silicon carbide, Ceramics, Pulsed laser operation, Laser processing, Ultrasonics, Nanosecond lasers, Laser energy, Particles

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Silicon carbide ceramics possess excellent properties such as high hardness, wear resistance, high temperature resistance, and corrosion resistance, making them widely used in the aerospace industry. However, due to their high hardness and brittleness, traditional processing methods such as grinding and milling tend to generate surface debris, cracks, and tool wear during the machining of silicon carbide ceramics. Laser processing, as a non-contact processing method, possesses technological advantages. This paper carried out the laser grooving process for silicon carbide ceramics based on ultrasonic vibration assisted rotating beam with nanosecond laser. The effects of single pulse energy and ultrasonic vibration on the depth and width of the micro-groove and the three-dimensional morphology of the deposited layer were investigated. The results show that when the single pulse energy is less than 700μJ, the depth and width of the micro-groove increase with the increase of the laser single pulse energy, and the depth and width of the micro-groove tend to stabilize when the single pulse energy reaches 700μJ. When the ultrasonic frequency is 20kHz, the width of the micro-groove becomes wider with the increase of the ultrasonic amplitude, and the depth of the micro-groove decreases with the increase of the ultrasonic amplitude, this is because the ultrasonic vibration direction is perpendicular to the scanning speed direction, which makes the laser beam interact with the material in a wider area, thus generating an energy dispersion effect. Comparing the conditions with and without ultrasonic assistance, it is found that the thickness of the deposited layer in the micro-groove with the use of ultrasonic vibration processing is smaller than that in the micro-groove without ultrasonic vibration processing, and the thickness of the deposited layer decreases with the increase of the ultrasonic amplitude. Line scanning of the processed area using EDS reveals that ultrasonic vibration can reduce the oxygen content on the micro-groove surface to some extent. This study provides a new process solution for efficient and high-quality laser processing of silicon carbide ceramics.

Proceedings Article | 11 October 2024 Paper

Study on the blowing-assisted laser ablation characteristics and numerical simulation of titanium alloys

Qi Li, Xiaoxiao Chen, Shunquan Shen, Qi Rao, Wenwu Zhang

Proceedings Volume 13287, 132871A (2024) https://doi.org/10.1117/12.3039004

KEYWORDS: Laser ablation, Titanium, Alloys, Pulsed laser operation, Beam diameter, Surface roughness, Edge roughness, Optical simulations, Liquids, Laser processing

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Proceedings Article | 11 October 2024 Paper

Effect of defocus amount of rotational beam coupled laser on the grooving characteristics of nickel-based superalloys

Rao Qi, Xiaoxiao Chen, Shunquan Shen, Jianbo Chen, Wenwu Zhang

Proceedings Volume 13287, 1328719 (2024) https://doi.org/10.1117/12.3038999

KEYWORDS: Laser processing, Laser energy, Nanosecond lasers, Laser applications, Scanning electron microscopy, Laser ablation

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Proceedings Article | 16 October 2023 Paper

Study on the single pulse ablation characteristics of SiC ceramics by infrared femtosecond laser

Shunquan Shen, Xiaoxiao Chen, Xuanhua Zhang, Jianbo Chen, Wenwu Zhang

Proceedings Volume 12792, 127920R (2023) https://doi.org/10.1117/12.2691081

KEYWORDS: Laser ablation, Silicon carbide, Ceramics, Femtosecond phenomena, Femtosecond pulse shaping, Laser damage threshold, Pulsed laser operation, Laser processing, Infrared radiation, Infrared lasers

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Proceedings Article | 16 October 2023 Paper

Accumulative effect in femtosecond laser ablation of SiCf/SiC ceramic matrix composites

Qi Rao, Xiaoxiao Chen, Tao Chen, Jianbo Chen, Wenwu Zhang

Proceedings Volume 12792, 127920V (2023) https://doi.org/10.1117/12.2691145

KEYWORDS: Laser ablation, Laser damage threshold, Laser processing, Composites

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Proceedings Article | 16 December 2022 Paper

Digital modeling and simulation verification of five-axis laser processing of curved surfaces

Jianbo Chen, Xiaoxiao Chen, Xuanhua Zhang, Wenwu Zhang

Proceedings Volume 12501, 125010A (2022) https://doi.org/10.1117/12.2648813

KEYWORDS: Laser processing, Laser applications, Laser cutting, Solid modeling, Computer aided design, Data modeling, 3D modeling, Modeling and simulation

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Proceedings Article | 16 December 2022 Paper

Surface features of multi-beam coupling nanosecond laser processing of nickel-based superalloys

Chengnuo Yi, Xiaoxiao Chen, Xianyou Chen, Tao Chen, Wenwu Zhang

Proceedings Volume 12501, 1250109 (2022) https://doi.org/10.1117/12.2648664

KEYWORDS: Polishing, Surface finishing, Laser processing, Surface roughness, Laser energy, Confocal microscopy

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Proceedings Article | 16 December 2022 Paper

Microgroove machining characteristics of Si3N4 ceramics by dual-beam coupled nanosecond laser

Xuanhua Zhang, Xiaoxiao Chen, Xianyou Chen, Wenwu Zhang, Lirong Huang

Proceedings Volume 12501, 1250108 (2022) https://doi.org/10.1117/12.2648603

KEYWORDS: Ceramics, Surface roughness, Laser processing, Laser energy, Semiconductor lasers, Pulsed laser operation, Microscopes, Laser scanners, Micromachining

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Proceedings Article | 31 August 2021 Paper

Experimental study on ablation of stainless steel with a new type of beam-coupled nanosecond laser

Huihui Zhang, Xiaoxiao Chen, Ji Wang, Wenwu Zhang, Dianbo Ruan

Proceedings Volume 11907, 1190737 (2021) https://doi.org/10.1117/12.2603314

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Proceedings Article | 31 August 2021 Paper

Changes in surface characteristics of stainless steel polished by nanosecond laser based on beam coupling

Xiaoxiao Chen, Yuan Li, Huihui Zhang, Wenwu Zhang

Proceedings Volume 11907, 1190736 (2021) https://doi.org/10.1117/12.2603292

KEYWORDS: Polishing, Surface finishing, Pulsed laser operation, Surface roughness, Laser processing, Radium, Metals, Laser applications, Laser energy, Time metrology

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Proceedings Article | 31 August 2021 Paper

Research on polishing process of aluminum alloy curved surface by nanosecond laser beam coupling

Xianyou Chen, Xiaoxiao Chen, Yuan Li, Wenwu Zhang, Xingrong Shen

Proceedings Volume 11907, 1190720 (2021) https://doi.org/10.1117/12.2603072

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Proceedings Article | 31 August 2021 Paper

Directional effect and surface features of silicon nitride ceramics by laser spot ablation and microgrooving

Guiying Ma, Xiaoxiao Chen, Yang Liu, Huihui Zhang, Wenwu Zhang

Proceedings Volume 11907, 1190735 (2021) https://doi.org/10.1117/12.2603271

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Proceedings Article | 2 December 2020 Paper

Surface forming mechanism and process in laser milling of 7075 aluminum alloy with inclination

Yuan Li, Xiaoxiao Chen, Yunfeng Wang, Wenwu Zhang

Proceedings Volume 11717, 117173C (2020) https://doi.org/10.1117/12.2587590

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Aluminum alloy has the advantages of high strength, corrosion resistance and good toughness, so it is widely used in aerospace, automotive manufacturing, and other fields. Laser processing has the advantages of controllable energy, high energy density, wide range of material adaptation, no contact, almost no cutting force, clean and environmentally friendly, etc. Moreover, the complex features and micro structure functionalization of components can be solved by laser processing. The oblique incidence of the laser will reduce the processing depth of beam waist from the geometric level. And the resulting space vector effect can introduce new processing mechanisms. The processing result could be improved by adjusting the vector effect with important value and novelty. In this paper, the mechanism and forming surface of 7075 be processed by nanosecond laser with different positive inclination angles under the same basic process parameters. It is shown that laser milling can effectively reduce the surface roughness of 7075. The result shows that the when the laser inclination angle (θ) is in the range of 0°~40°, the surface roughness of the machined surface decreases with the increase of θ, and the roughness can be as small as 0.15 μm. When 40° < θ ≤ 60°, the machined surface roughness increases with the increase of θ, but it is still significantly lower than the original surface roughness. The main reason for this phenomenon is that the projected area, shape, and energy distribution of the laser beam waist in the processing area are affected by the laser beam lead angle. The energy distribution affects the material removal mechanism: cladding, vaporization, or sublimation. And under the positive inclination angle, the processed surface is first irradiated and then processed for the second time by the laser beam. The relative posture of laser beam and workpiece is conducive to the discharge of slag, thus improving the processing quality. And pointed out that within the range of experimental conditions, θ = 40° is the optimal inclination angle, because the processed surface has the least undulation and the highest flatness. Moreover, this research has guiding significance for improving the surface quality of laser processing.

Proceedings Article | 19 November 2019 Paper

Research on picosecond laser processing technology of ceramic materials involving incident angle

Heng Wang, Xiaoxiao Chen, Wenwu Zhang

Proceedings Volume 11183, 111830R (2019) https://doi.org/10.1117/12.2538899

KEYWORDS: Laser processing, Ceramics, Silicon, Semiconductor lasers, Plasma, Picosecond phenomena, Laser energy, Absorption, Laser beam propagation

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Showing 5 of 14 publications

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