Zobrazeno 1 - 10
of 76
pro vyhledávání: '"Chris Valentin Nielsen"'
Autor:
Akash Meena, Andreas Andersson Lassila, Dan Lonn, Kent Salomonsson, Wei Wang, Chris Valentin Nielsen, Mohamad Bayat
Publikováno v:
Journal of Advanced Joining Processes, Vol 9, Iss , Pp 100196- (2024)
The keyhole depth is a key measurement characteristic in the laser welding of busbar to battery tabs in battery packs for electric vehicles (EV), as it directly affects the quality of the weld. In this work, experiments are carried out with controlle
Externí odkaz:
https://doaj.org/article/9a5e6991f0404188aca8486b8eae44a7
Autor:
Úlfar Arinbjarnar, Rune Juul Christiansen, Maximilian Knoll, Karen Pantleon, Morten Stendahl Jellesen, Chris Valentin Nielsen
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 5, p 174 (2023)
Straining of sheet metal leads to surface roughness changes. In this study, foils of AISI 201 and AISI 304 stainless steel were strained in uniaxial tension to impose roughening of their surfaces. Thereafter, the corrosion resistance, electrical resi
Externí odkaz:
https://doaj.org/article/ba3d18044b0f4ef685f3400abf14f00f
Publikováno v:
Metals, Vol 11, Iss 8, p 1256 (2021)
Additively manufactured polymer tools are evaluated for use in metal forming as prototype tools and in the attempt to make sheet metal more attractive to small production volumes. Printing materials, strategies and accuracies are presented before the
Externí odkaz:
https://doaj.org/article/0ad22b98006b4ad4bba8bbca28b179f9
Publikováno v:
Metals, Vol 11, Iss 6, p 976 (2021)
Al-Si is the most popular coating used to prevent oxidation on the surfaces of hot-stamped steel sheets during the heating process. However, like other coatings, it affects the strength of the spot welds in joining the hot-stamped steel parts. In thi
Externí odkaz:
https://doaj.org/article/a825977f6efa421dba894f43627046de
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 5, Iss 1, p 10 (2021)
In recent years, increasing automotive safety by improving crashworthiness has been a focal point in the automotive industry, employing high-strength steel such as press hardenable steel (PHS). In addition to the improved strength of individual parts
Externí odkaz:
https://doaj.org/article/efa351111ccd4691ae4d339db1ae52d9
Publikováno v:
Micromachines, Vol 10, Iss 4, p 218 (2019)
Electro sinter forging (ESF) represents an innovative manufacturing process dealing with high electrical currents. Classified in the category of electrical current assisted sintering (ECAS) processes, the main principle is that Joule heating is gener
Externí odkaz:
https://doaj.org/article/f961ecefb3d6496db6758dd536cb3468
Autor:
Nils Bay, Chris Valentin Nielsen
8th International Conference on Tribology in Manufacturing Processes and Joining by Plastic Deformation (ICTMP2018)Selected, peer reviewed papers from the 8th International Conference on Tribology in Manufacturing Processes & Joining by Plastic Defor
Publikováno v:
Journal of Manufacturing Processes. 73:340-353
A methodology based on finite element computations is proposed to predict the galling onset of aluminium alloys in cold forming. The methodology assumes that galling starts as soon as a finite element in the area of contact has reached a critical dam
Autor:
Paulo A.F. Martins, Ivo M. F. Bragança, Rui Fv Sampaio, Chris Valentin Nielsen, João P.M. Pragana, Carlos M.A. Silva
Publikováno v:
Sampaio, R FV, Pragana, J PM, Bragança, I MF, Silva, C MA, Nielsen, C V & Martins, P AF 2022, ' Electric performance of fastened hybrid busbars: An experimental and numerical study ', Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, vol. 236, no. 6, pp. 1152-1163 . https://doi.org/10.1177/14644207211043009
This paper is focused on fastened hybrid busbars made from copper and aluminium with the purpose of analysing the influence of the steel bolts, of their tightening torque and of the surface condition of the sheets on the electric current flow and ele
The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation
Publikováno v:
Zwicker, M, Spangenberg, J, Bay, N, Martins, P A F & Nielsen, C V 2023, ' The influence of hydrostatic pressure build-up on asperity flattening under bulk plastic deformation ', Journal of Materials Processing Technology, vol. 315, 117919 . https://doi.org/10.1016/j.jmatprotec.2023.117919
The influence of the bulk modulus of metal forming lubricants on their load-carrying capacity during model asperity flattening under bi-axial subsurface deformation was experimentally and numerically studied. The experimental results showed that lubr