Results 11 to 20 of about 1,160 (144)
Structural analysis of traditional Chinese hidden-keyhole padlocks [PDF]
Mechanical Sciences, 2018 Hidden-keyhole padlocks use a plate or some other means to cover the keyhole and are a category of traditional Chinese padlocks. The topological structures of traditional hidden-keyhole padlocks have distinct arrangements in the operation.
K.-H. Hsiao
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Mechanism of keyhole pore formation in metal additive manufacturing
npj Computational Materials, 2022 During metal additive manufacturing, the porosity of the as-built part deteriorates the mechanical property and even hinders the further application of metal additive manufacturing.
Lu Wang +3 more
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Metals, 2021 Hybrid laser arc welding (HLAW) features advantages such as higher welding speed and gap tolerance as well as smaller welding deformation and heat-affected zone than arc welding.
Leilei Wang +3 more
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Preventing Evaporation Products for High-Quality Metal Film in Directed Energy Deposition: A Review
Metals, 2021 Directed energy deposition (DED), a type of additive manufacturing (AM) is a process that enables high-speed deposition using laser technology. The application of DED extends not only to 3D printing, but also to the 2D surface modification by direct ...
Kang-Hyung Kim +3 more
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Metals, 2023 In the magnetically controlled Plasma-GMAW welding process, the composite arc forms a keyhole in the workpiece to be welded. In order to explore the effect of process parameters on arc coupling, weld pool and keyhole, and the behavior characteristics of ...
Xinglin Miao +5 more
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Metals, 2018 High-power fiber laser welding is an efficient and effective way to produce heavy section structures. However, there is a significant challenge in producing the welds with free of imperfections such as nail-head-shaped welds, spatters, and root sagging ...
Mingjun Zhang +4 more
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Frontiers in Physics, 2022 Keyhole laser welding is the benchmark for deep-penetration joining processes. It needs high incident laser beam power densities at the workpiece surface to take place. The gaseous phase plays a fundamental role to keep the deep and narrow keyhole cavity
Donato Coviello +2 more
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International Journal of Optics, 2012 In deep penetration laser welding, a keyhole is formed in the material. Based on an experimentally obtained bending keyhole from low- and medium-speed laser penetration welding of glass, the keyhole profiles in both the symmetric plane are determined by ...
Xiangzhong Jin +4 more
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Numerical Simulation of Molten Pool Dynamics in Laser Deep Penetration Welding of Aluminum Alloys
Crystals, 2022 In this paper, the numerical simulation of molten pool dynamics in laser deep penetration welding of aluminum alloys was established based on the FLUENT 19.0 software.
Jin Peng +6 more
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Structural analysis of traditional Chinese blocked-keyhole padlocks [PDF]
Mechanical Sciences, 2022 The use of locks has a history of thousands of years. Barbed-spring padlocks are the typical locks used in ancient China and can be divided into three main types, namely open-keyhole, hidden-keyhole, and blocked-keyhole padlocks.
Y. Zhang +4 more
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