Investigation of the forming pressure and formability of metal foil by laser-driven multi-layered flyer

Wang, Xiao; Yuan, Yaoqiang; Shen, Zongbao; Gu, Chunxing; Zhang, Qiang; Liu, Huixia

doi:10.1016/j.optlastec.2013.11.013

Cited by 12 publications

(4 citation statements)

References 25 publications

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“…The laser employed in the experiment was Spitlight 2000 Nd:YAG (InnoLas Corporation, Krailling, Germany) with Gaussian distribution beam, and its main parameters is listed in Table 2 . In order to get the desired spot diameter (about 2 mm), the defocusing was selected as −10 mm [ 21 ]. Because of the high temperature and shock impedance, K9 glass was selected as the transparent confining layer, with the diameter of 50 mm and the thickness of 4 mm, to constrain the expansion of plasma.…”

Section: Methodsmentioning

confidence: 99%

Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions

et al. 2017

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Microscale laser dynamic flexible forming (µLDFF) is a novel ultrahigh strain rate manufacturing technology with high efficiency and low cost. However, the µLDFF is just confined to single-layer foil at present. In this work, sheet metal laminates (Cu/Ni) were selected as the experimental material for its excellent mechanical and functional properties, and a new micro-bending method of sheet metal laminates by laser-driven soft punch was proposed in warm conditions. The micro-mold and warm platform were designed to investigate the effects of temperature and energy on formability, which were characterized by forming accuracy, surface quality, element diffusion, and so on. The experimental results show that the forming accuracy and quality increased first and then decreased with laser energy, but the hardness increased consistently. In warm conditions, the fluidity of material was improved. The forming depth and accuracy increased for the relieved springback, and the surface quality increased first and then decreased. The tensile fracture disappeared with temperature for the decreased hardness and thinning ratio, and the element diffusion occurred. Overall, this study indicates that the formability can be improved in warm conditions and provides a basis for the investigation of micro-bending of sheet metal laminates by µLDFF in warm conditions.

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Section: Methodsmentioning

confidence: 99%

Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions

et al. 2017

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“…Xiao Wang proposed that rubber is similar to the liquid which has good flow property [11]. If compressed in one direction, it will expand in the other direction, and delivering pressure.…”

Section: Introductionmentioning

confidence: 99%

Comparative Formability Study of Natural Rubber, B-Nitrile Rubber and Silicon Rubber in Rubber Assisted Forming of Hemispherical Copper Cup

al.¹

2018

IJMPERD

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Rubber assisted sheet metal forming has always been the subject of research for last 50 years. Rubber diaphragm is primarily used to improve the formability of the sheet metal components having complex features. In this paper, three varieties of rubber viz. Natural rubber, B-nitrile rubber and Silicon rubber are used to form the hemispherical part made out of pure copper. The rubbers are manufactured in such a way to achieve the same hardness level so that proper comparison could be made. The same part is formed under three rubber diaphragms and thickness reduction is compared. The present paper gives the detail account of rubber chemical composition, forming set up and comparison of thickness reduction in the part after forming.

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“…Recently, as a new micro-forming technique laser-driven flyer forming (LDF) has gain rapid development. Some researchers [10,11] point that LDF can generate high pressure loading and accelerate the flyer to nearly 200m/s with low laser energy, which provide an opportunity to utilize the laser generated energy to obtain high velocity impact of a thin flyer plate. Daehn and Lippold [14] then propose LIW as for low temperature spot impact welding.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Laser Impact Welding of Dissimilar Metals

Wang

Hao³

et al. 2014

KEM

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Laser impact welding (LIW) is a novel welding technique which uses laser induced shock waves to obtain the solid-state and metallurgical bonding between flyer and base plates, and can be applied in welding of dissimilar metal plates in micron level. In this paper, experimental study is conducted with titanium as the flyer plate and aluminum as the base plate under different laser energies and laser spot diameters. Besides, the microstructure and mechanical properties of the welding joints are also investigated. The wavy interface is observed by metallographic investigation which is similar to explosive welding and electromagnetic pulse welding. Moreover, the micro-hardness taken from the interface region shows an obvious improvement compared with the base metal. It is also found that laser shock welding results in fine grained structure of titanium on the weld interface. In conclusion, laser shock welding can not only improve the material microstructure of weld interface, but also avoid the heat affected zone and formation of intermetallic phase during dissimilar metal welding. Therefore, it is a promising welding technology in the field of MEMS.

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Investigation of the forming pressure and formability of metal foil by laser-driven multi-layered flyer

Cited by 12 publications

References 25 publications

Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions

Investigation of Micro-Bending of Sheet Metal Laminates by Laser-Driven Soft Punch in Warm Conditions

Comparative Formability Study of Natural Rubber, B-Nitrile Rubber and Silicon Rubber in Rubber Assisted Forming of Hemispherical Copper Cup

Experimental Study on Laser Impact Welding of Dissimilar Metals

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