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Journal of Manufacturing and Materials Processing, 2022 Pin extrusion is a common process to realise pin structures in different geometrical dimensions for a subsequent joining operation. Nevertheless, the process of pin extrusion offers process limits regarding sheet thinning as a consequence of the punch ...
David Römisch +4 more
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Metals, 2021 This work aimed to study the deformation characteristics and microstructure of AA6063 aluminum alloy component with complex shape manufactured by cold orbital forming processing.
Wei Feng +3 more
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Ultrafast Two-Electron Orbital Swap in Li Initiated by Attosecond Pulses
Ultrafast Science, 2023 A universal mechanism of ultrafast 2-electron orbital swap is discovered through 2-photon sequential double ionization of Li. After a 1s electron in Li is ionized by absorbing an extreme ultraviolet photon, the other 2 bound electrons located on 2 ...
Hui Jiang +4 more
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Material Flow in Ultrasonic Orbital Microforming
Metals, 2019 Ultrasonic orbital microforming—UOM—uses the broadly understood idea of orbital forging but uses very different laws of physics. The only shaping force in this process is the inertia force resulting from the acceleration in the rotary motion ...
Wojciech Presz
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Ultrasonic Orbital Microforming—A New Possibility in the Forming of Microparts
Metals, 2018 The demand for very small metal parts is growing rapidly due to the development of micromechanisms. In microtechnology, the dimensions of scale parts are below 1 + c mm, where c varies based on the process type.
Wojciech Presz
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Dual XH–π Interaction of Hexafluoroisopropanol with Arenes
Molecules, 2021 The dual XH (OH and CH) hydrogen-bond-donating property of 1,1,1,3,3,3-hexafluoroisopropanol (HFIP) and the strong dual XH–π interaction with arenes were firstly disclosed by theoretical studies. Here, the high accuracy post-Hartree–Fock methods, CCSD(T)/
Le Lu, Ruimao Hua
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Simulating binary neutron stars: dynamics and gravitational waves [PDF]
, 2008 We model two mergers of orbiting binary neutron stars, the first forming a black hole and the second a differentially rotating neutron star. We extract gravitational waveforms in the wave zone. Comparisons to a post-Newtonian analysis allow us to compute
B. Gustaffson +12 more
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A Constitutive Friction Law for Sheet-Bulk Metal Forming
Tribology Online, 2016 Friction has a significant effect on metal forming both in economic and technical terms. This is especially true for sheet-bulk metal forming, which is a combination of bulk metal forming and sheet metal forming.
Florian Beyer, Kai Willner
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On the ground electronic states of copper silicide and its ions [PDF]
, 1998 The low-lying electronic states of SiCu, SiCu^+, and SiCu^− have been studied using a variety of high-level ab initio techniques. As expected on the basis of simple orbital occupancy and bond forming for Si(s^2p^2)+Cu(s^1) species, ^2Π_r, ^1Σ^+, and ^3Σ^−
Boldyrev, Alexander I. +5 more
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Two New Candidate Planets in Eccentric Orbits [PDF]
, 1999 Doppler measurements of two G-type main-sequence stars, HD210277 and HD168443, reveal Keplerian variations that imply the presence of companions with masses (M sin i) of 1.28 and 5.04 M_Jup and orbital periods of 437 d and 58 d, respectively.
Bertelli G. +16 more
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