Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Niels Bay"'
Publikováno v:
Production and Manufacturing Research: An Open Access Journal, Vol 3, Iss 1, Pp 185-200 (2015)
Resistance spot welding (RSW) of aluminum alloys implies a major problem of inconsistent quality from weld to weld due to problems of varying thickness of the oxide layer. The high resistivity of oxide layer causes strong heat development, which has
Externí odkaz:
https://doaj.org/article/99e57563112b49b7b8ec97df6abc15e0
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
Publikováno v:
Lubricants, Vol 5, Iss 1, p 3 (2017)
While texturing of workpiece surfaces to promote lubrication in metal forming has been applied for several decades, tool surface texturing is rather new. In the present paper, tool texturing is studied as a method to prevent galling. A strip reductio
Externí odkaz:
https://doaj.org/article/1be48723205d4faaa6587e6334fcb5d1
Publikováno v:
CIRP Annals. 71:241-244
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
Publikováno v:
Tribology International. 180:108249
Publikováno v:
Cannella, E, Nielsen, C V & Bay, N 2020, ' Resistance sintering of NdFeBCo permanent magnets and analysis of their properties ', CIRP Journal of Manufacturing Science and Technology, vol. 29, Part A, pp. 88-98 . https://doi.org/10.1016/j.cirpj.2020.02.005
Permanent NdFeBCo magnets are produced by resistance sintering, which is a recent approach in the field of powder metallurgy. Classified as an electrical current assisted sintering (ECAS) process, its ultrafast characteristics enable quick densificat
Publikováno v:
Journal of Advanced Joining Processes, Vol 3, Iss, Pp 100039-(2021)
Nielsen, C V, Zhang, W, Bay, N & Martins, P A F 2021, ' Cross-wire welding analyzed by experiments and simulations ', Journal of Advanced Joining Processes, vol. 3, 100039 . https://doi.org/10.1016/j.jajp.2020.100039
Nielsen, C V, Zhang, W, Bay, N & Martins, P A F 2021, ' Cross-wire welding analyzed by experiments and simulations ', Journal of Advanced Joining Processes, vol. 3, 100039 . https://doi.org/10.1016/j.jajp.2020.100039
Resistance welding of crossed wires, e.g. used in the electronics industry or in fabrication of wire meshes, is analyzed by both experiments and numerical modeling using an electro-thermo-mechanical finite element formulation. Welding machine charact
Publikováno v:
Üstünyagiz, E, Nielsen, C V, Tiedje, N S & Bay, N 2018, ' Combined numerical and experimental determination of the convective heat transfer coefficient between an AlCrN-coated Vanadis 4 tool and Rhenus oil ', Measurement: Journal of the International Measurement Confederation, vol. 127, pp. 565-570 . https://doi.org/10.1016/j.measurement.2018.05.108
Regardless of the field of application, the reliability of numerical simulations depends on correct description of boundary conditions. In thermal simulation, determination of heat transfer coefficients is important because it varies with material pr