Driving mechanism of keyhole evolution during multi-pulse drilling with a millisecond laser
文献类型：期刊论文
| 作者 | Zhang Y(张越); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Ning WJ(宁伟健); Yu G(虞钢) ; He XL(何秀丽); Li SX(李少霞); Ning WJ(宁伟健); Zhang Y(张越)
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| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2019-10-01 |
| 卷号 | 62期号:10页码:7 |
| 关键词 | multi-pulse laser drilling melt ejection vaporization keyhole evolution driving mechanism |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-019-9418-4 |
| 通讯作者 | Yu, Gang(gyu@imech.ac.cn) ; He, XiuLi(xlhe@imech.ac.cn) |
| 英文摘要 | To better understand the physical processes of multi-pulse laser drilling, this study investigates the keyhole evolution and its driving mechanism in a time-resolved observation system. The evolution characteristics suggested a two-phase process of rapid penetration followed by moderate penetration. As revealed in the ejection and vaporization behavior, the keyhole evolution was dominated by ejection and vaporization during the rapid and moderate penetration stages, respectively. In a single laser-pulsed drilling experiment, the driving mechanism itself was found to be affected by the dimensionless laser power density. The effect of dimensionless laser power density on depth increment was then discussed by comparing the experimental observations with numerical simulation results. The results further confirmed the driving mechanism of the keyhole evolution. The results in this paper are useful for understanding the driving mechanism of the keyhole evolution during multi-pulse laser drilling. |
| 分类号 | 一类 |
| WOS关键词 | NUMERICAL-SIMULATION ; HEAT-TRANSFER ; HOLE ; VAPORIZATION ; DYNAMICS ; EJECTION ; MODEL ; FLOW |
| 资助项目 | National Natural Science Foundation of China[11672304] ; National Natural Science Foundation of China[11502269] ; National Natural Science Foundation of China[11272316] ; National Natural Science Foundation of China[11272317] ; Plan of Beijing Municipal Commission of Science and Technology[Z181100003818015] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000483233000001 |
| 资助机构 | National Natural Science Foundation of China ; Plan of Beijing Municipal Commission of Science and Technology |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/79967]  |
| 专题 | 力学研究所_先进制造工艺力学重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhang Y,Yu G,He XL,et al. Driving mechanism of keyhole evolution during multi-pulse drilling with a millisecond laser[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(10):7. |
| APA | 张越.,虞钢.,何秀丽.,李少霞.,宁伟健.,...&Zhang Y.(2019).Driving mechanism of keyhole evolution during multi-pulse drilling with a millisecond laser.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(10),7. |
| MLA | 张越,et al."Driving mechanism of keyhole evolution during multi-pulse drilling with a millisecond laser".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.10(2019):7. |
入库方式： OAI收割
来源：力学研究所
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