Scholarlink

<p>This study aims to clarify the mechanism by which ultraviolet lasers remove coatings from aluminum alloy surfaces. It also investigates how varying scanning speeds affect the cleaning mechanism and outcomes, with the goal of identifying optimal process parameters. To achieve these objectives, a coupled photochemical and photothermal model was established for single-pulse laser cleaning. On this basis, multiple characterization techniques including OM, SEM, EDS, XPS, and CLSM were employed to analyze the effects of scanning speed on surface morphology and elemental composition during multi-pulse area scanning. The results indicate that both the width and depth of the simulated cleaning profile for single-pulse cleaning are smaller than the experimentally measured values, and this discrepancy becomes more pronounced with increasing laser fluence. Under multi-pulse area scanning conditions, photochemical and photothermal effects act jointly, demonstrating a synergistic enhancement relationship. However, the dominant mechanism varies with scanning speed: at higher scanning speeds, the photochemical effect has a more noticeable influence on the cleaning results, whereas as the scanning speed decreases, the photothermal effect becomes significantly enhanced.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Simulation and experimental study on UV laser removal of composite paint layers from civil aircraft skins at variable scan speeds

  • 期刊论文

  • 发表日期：

    2026年3月24日

查看全文
  • Jiale Zan,
  • Zhiqiang Zhang,
  • Shusen Zhao,
  • Cuiying Zhong,
  • Yizhen Yang,
  • Tiangang Zhang

摘要

This study aims to clarify the mechanism by which ultraviolet lasers remove coatings from aluminum alloy surfaces. It also investigates how varying scanning speeds affect the cleaning mechanism and outcomes, with the goal of identifying optimal process parameters. To achieve these objectives, a coupled photochemical and photothermal model was established for single-pulse laser cleaning. On this basis, multiple characterization techniques including OM, SEM, EDS, XPS, and CLSM were employed to analyze the effects of scanning speed on surface morphology and elemental composition during multi-pulse area scanning. The results indicate that both the width and depth of the simulated cleaning profile for single-pulse cleaning are smaller than the experimentally measured values, and this discrepancy becomes more pronounced with increasing laser fluence. Under multi-pulse area scanning conditions, photochemical and photothermal effects act jointly, demonstrating a synergistic enhancement relationship. However, the dominant mechanism varies with scanning speed: at higher scanning speeds, the photochemical effect has a more noticeable influence on the cleaning results, whereas as the scanning speed decreases, the photothermal effect becomes significantly enhanced.