DYNAMICS OF THE VAPOR FLOW IN THE KEYHOLE IN PENETRATION WELDING WITH A LASER AT MEDIUM WELDING SPEEDS

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	DYNAMICS OF THE VAPOR FLOW IN THE KEYHOLE IN PENETRATION WELDING WITH A LASER AT MEDIUM WELDING SPEEDS
	DOWDEN, J ; WU, SC ; KAPADIA, P ; STRANGE, C
	1991-04-14
发表期刊	JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN	0022-3727
卷号	24 期号:4 页码:519-532
摘要	The keyhole formed when a laser is used as the power source for a weld between two pieces of metal contains partially ionized metal vapour as well as other material. This flow is linked with the fluid motion and thermal conduction taking place in the liquid and solid regions surrounding it. A simple model is presented here which describes the flow parallel to the axis of the keyhole when the welding speed is in the medium speed range. It is shown that shock waves may be present at its ends. The formulation is time dependent. Investigation of blind keyholes shows that there may be no solutions consistent with the assumptions of the model, but that when there are, solutions exist both with and without shocks present at the keyhole entrance. The character of the solutions can vary considerably. As welding speed increases the process becomes successively more dominated by direct absorption at the keyhole walls.
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Applied
WOS记录号	WOS:A1991FH51700002
出版者	IOP PUBLISHING LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/28578
专题	中国科学院数学与系统科学研究院
通讯作者	DOWDEN, J
作者单位	1.CHINESE ACAD SCI,INST APPL MATH,BEIJING,PEOPLES R CHINA 2.UNIV ESSEX,DEPT PHYS,COLCHESTER CO4 3SQ,ESSEX,ENGLAND 3.ANGLIA HIGHER EDUC COLL,SCH TECHNOL,CHELMSFORD,ESSEX,ENGLAND
推荐引用方式 GB/T 7714	DOWDEN, J,WU, SC,KAPADIA, P,et al. DYNAMICS OF THE VAPOR FLOW IN THE KEYHOLE IN PENETRATION WELDING WITH A LASER AT MEDIUM WELDING SPEEDS[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,1991,24(4):519-532.
APA	DOWDEN, J,WU, SC,KAPADIA, P,&STRANGE, C.(1991).DYNAMICS OF THE VAPOR FLOW IN THE KEYHOLE IN PENETRATION WELDING WITH A LASER AT MEDIUM WELDING SPEEDS.JOURNAL OF PHYSICS D-APPLIED PHYSICS,24(4),519-532.
MLA	DOWDEN, J,et al."DYNAMICS OF THE VAPOR FLOW IN THE KEYHOLE IN PENETRATION WELDING WITH A LASER AT MEDIUM WELDING SPEEDS".JOURNAL OF PHYSICS D-APPLIED PHYSICS 24.4(1991):519-532.