Hole Morphology and Keyhole Evolution during Single Pulse Laser Drilling on Polyether-Ether-Ketone (PEEK)
文献类型：期刊论文
| 作者 | Zhang, Yanmei1,3; Yu, Gang1,2,3 ; Tian, Chongxin1,3; Li, Zhiyong1,3; Shao, Jiayun1,3; Li, Shaoxia1,3; He, Xiuli1,3; He XL(何秀丽); Yu G(虞钢); Tian CX(田崇鑫)
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| 刊名 | MATERIALS
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| 出版日期 | 2022-04-01 |
| 卷号 | 15期号:7页码:20 |
| 关键词 | laser drilling polyether-ether-ketone (PEEK) hole morphology keyhole evolution material-removal mechanism |
| DOI | 10.3390/ma15072457 |
| 通讯作者 | Li, Shaoxia(lisx@imech.ac.cn) ; He, Xiuli(xlhe@imech.ac.cn) |
| 英文摘要 | Polyether-ether-ketone (PEEK), with its superior mechanical, chemical, and thermal properties, as well as high biocompatibility, has been used in aerospace, electronics, and biomedical applications. In this paper, a large number of experiments of single-pulse laser drilling on PEEK were performed to analyze the hole morphology and keyhole evolution, which were characterized by an optical microscope, charge-coupled device (CCD), and high-speed camera. A novel method is proposed to observe and measure the dimension of the processed hole rapidly right after laser drilling for special polymer materials with wear-resistance and non-conductivity. Morphological characteristics of holes are presented to illustrate the effect of pulse width and peak power on hole depth, hole diameter, and aspect-ratio. The obtained maximum drilling depth was 7.06 mm, and the maximum aspect-ratio was 23. In situ observations of the dynamic process of laser drilling, including the keyhole evolution together with ejection and vaporization behavior, were also carried out. The keyhole evolution process can be divided into three stages: rapid increment stage (0-2 ms) at a rate of 2.1 m/s, slow increment stage (2-4 ms) at a rate of 0.3 m/s, and stable stage (>4 ms). Moreover, the variation of dimensionless laser power density with the increase in pulse width was calculated. The calculated maximum drilling depth based on energy balance was compared with the experimental depth. It is proven that the laser-PEEK interaction is mainly influenced by a photothermal effect. Ejection is the dominant material-removal mechanism and contributes to over 60% of the depth increment during the rapid increment stage, while vaporization is dominant and contributes to about 80% of the depth increment during the slow increment stage. The results reveal the material removal mechanism for single-pulse laser drilling on PEEK, which is helpful to understand the dynamic process of keyhole evolution. This not only provides a processing window for future laser drilling of PEEK but also gives a guide for the manufacturing of other polymers. |
| WOS关键词 | POLYMERS ; ABLATION ; COMPOSITES ; MACHINABILITY ; PERFORMANCE ; MECHANISMS ; PARAMETERS ; DYNAMICS |
| 资助项目 | National Natural Science Foundation of China[11502269] ; National Natural Science Foundation of China[11672304] ; Plan for Beijing Municipal Commission of Science and Technology[Z181100003818015] |
| WOS研究方向 | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000781973400001 |
| 资助机构 | National Natural Science Foundation of China ; Plan for Beijing Municipal Commission of Science and Technology |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/88826]  |
| 专题 | 宽域飞行工程科学与应用中心 |
| 通讯作者 | Li, Shaoxia; He, Xiuli |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yanmei,Yu, Gang,Tian, Chongxin,et al. Hole Morphology and Keyhole Evolution during Single Pulse Laser Drilling on Polyether-Ether-Ketone (PEEK)[J]. MATERIALS,2022,15(7):20. |
| APA | Zhang, Yanmei.,Yu, Gang.,Tian, Chongxin.,Li, Zhiyong.,Shao, Jiayun.,...&李少霞.(2022).Hole Morphology and Keyhole Evolution during Single Pulse Laser Drilling on Polyether-Ether-Ketone (PEEK).MATERIALS,15(7),20. |
| MLA | Zhang, Yanmei,et al."Hole Morphology and Keyhole Evolution during Single Pulse Laser Drilling on Polyether-Ether-Ketone (PEEK)".MATERIALS 15.7(2022):20. |
入库方式： OAI收割
来源：力学研究所
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