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Article:In situ optical observations of keyhole dynamics during laser drilling

 

题名:  In situ optical observations of keyhole dynamics during laser drilling
作者:  Chen M(陈猛);  Wang YR(王育人);  Yu G(虞钢);  Lan D(蓝鼎);  Zheng ZY(郑中玉)
通讯作者:  Wang, YR (reprint author), Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China.
发表日期:  2013-11-4
关键词:  High speed photography;  Drilling assembly;  Drilling process;  Dynamics coupling;  Hole expansions;  In-situ optical observations;  Physical process;  Thin sandwich structures;  Unified process
摘要:  To better understand the laser drilling process and especially to clarify keyhole dynamics in metal drilling, a quasi-two-dimensional drilling assembly was set up with a thin sandwich structure. Keyhole dynamics coupling multiple physical processes were recorded using highspeed photography, and clear images were obtained. The formation of keyholes was found not to be a single unified process, and the whole drilling process could be divided into five stages: an initial melt ejection, mild melting, rapid drilling, hole expansion, and backflow and recasting. As the keyhole evolved, the removal of material changed.
通讯作者邮箱:  yurenwang@imech.ac.cn; gyu@imech.ac.cn
原文网址:  http://dx.doi.org/10.1063/1.4829147
刊名:  APPLIED PHYSICS LETTERS
收录类别:  SCI;  EI
URI标识:  http://dspace.imech.ac.cn/handle/311007/47731
产权排序:  [Chen, Meng; Wang, Yuren; Lan, Ding; Zheng, Zhongyu] Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China; [Yu, Gang] Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China
专题: 中科院国家微重力实验室_期刊论文