Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Chris V. Nielsen"'
Publikováno v:
Tribology Online, Vol 19, Iss 1, Pp 55-61 (2024)
High-strength aluminum is a good candidate for use in light-weighting applications, but forming it is difficult due to its low formability. Elevated temperatures are therefore necessary to improve formability, but this reduces lubricant performance.
Externí odkaz:
https://doaj.org/article/752b667373ff4e67b9622ffb0302c7de
Autor:
Rui F. V. Sampaio, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Chris V. Nielsen, Paulo A. F. Martins
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 3, p 107 (2023)
This paper introduces a new formability test based on double-action radial extrusion to characterize material formability in the three-dimensional to plane-stress material flow transitions that are found in bulk metal-formed parts. The presentation d
Externí odkaz:
https://doaj.org/article/32bf3a688dc248b8ad2cdc3c3b8357ec
Autor:
Diogo F. M. Silva, Carlos M. A. Silva, Ivo M. F. Bragança, Chris V. Nielsen, Luis M. Alves, Paulo A. F. Martins
Publikováno v:
Materials, Vol 11, Iss 7, p 1118 (2018)
A new joining by forming process that combines lancing and shearing with sheet-bulk compression is utilized to assemble thin-walled crash boxes utilized as energy absorbers. Process design and fabrication of the new crash boxes are analyzed by finite
Externí odkaz:
https://doaj.org/article/fdfdf97a1701450099a4c2d9e774bb1f
Autor:
Martins, Rui F. V. Sampaio, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Chris V. Nielsen, Paulo A. F.
Publikováno v:
Journal of Manufacturing and Materials Processing; Volume 7; Issue 3; Pages: 107
This paper introduces a new formability test based on double-action radial extrusion to characterize material formability in the three-dimensional to plane-stress material flow transitions that are found in bulk metal-formed parts. The presentation d
Autor:
Chris V. Nielsen, Úlfar Arinbjarnar, Ermanno Ceron, Thomas L. Madsen, Brian Møller, Kasper M. Madsen, Kaarel Siimut
Publikováno v:
CIRP Annals.
Autor:
Úlfar Arinbjarnar, Chris V. Nielsen
Publikováno v:
Arinbjarnar, Ú & Nielsen, C V 2023, ' Effect of workpiece pre-straining on tribological performance of surface coatings in sheet metal forming ', Tribology International, vol. 180, 108262 . https://doi.org/10.1016/j.triboint.2023.108262
The material condition of a workpiece changes as it is formed. Typically, the workpiece hardens and undergoes geometrical and topographical changes. In progressive forming, where workpieces are formed in multiple steps, this means that the workpiece
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b397630b58428b7831619eccf8164012
https://orbit.dtu.dk/en/publications/44f76428-a0cb-4a4e-b38b-18a3c47ef085
https://orbit.dtu.dk/en/publications/44f76428-a0cb-4a4e-b38b-18a3c47ef085
Publikováno v:
CIRP Annals. 71:241-244
Publikováno v:
Tribology International. 180:108249
Publikováno v:
Zwicker, M, Spangenberg, J, Martins, P & Nielsen, C V 2022, ' Investigation of material strength and oil compressibility on the hydrostatic pressure build-up in metal forming lubricants ', Procedia CIRP, vol. 115, pp. 78-82 . https://doi.org/10.1016/j.procir.2022.10.053
Friction in sheet metal forming is largely governed by the flattening of surface asperities. Liquid lubricants can reduce flattening and friction by filling the surface valleys and carry a substantial amount of the pressure. Experimental and numerica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e8fc5804d8b7ec8901654e5cebbb4eb
https://orbit.dtu.dk/en/publications/ba2fdb06-8621-423d-b02f-176d69e3075a
https://orbit.dtu.dk/en/publications/ba2fdb06-8621-423d-b02f-176d69e3075a
Autor:
Rui F. V. Sampaio, Maximilian F. R. Zwicker, João P. M. Pragana, Ivo M. F. Bragança, Carlos M. A. Silva, Chris V. Nielsen, Paulo A. F. Martins
Publikováno v:
F. V. Sampaio, R, Zwicker, M F R, Pragana, J P M, M. F. Bragança, I, Silva, C M A, Nielsen, C V & Martins, P A F 2022, Busbars for e-mobility: State-of-the-Art Review and a New Joining by Forming Technology . in J P Davim (ed.), Mechanical and Industrial Engineering. Materials Forming, Machining and Tribology . Springer, Cham, Materials Forming, Machining and Tribology, pp. 111-141 . https://doi.org/10.1007/978-3-030-90487-6_4
Materials Forming, Machining and Tribology ISBN: 9783030904869
Materials Forming, Machining and Tribology ISBN: 9783030904869
The changes in the automotive market and their effects on industry are nowadays hot topics in metal forming seminars and conferences around the world. The rise in the number of electric vehicles will inevitably lead to a decrease in the demand of com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::886c3d14e6caf5d80ce11fd714c1ebd9
https://orbit.dtu.dk/en/publications/d4192b05-bca7-4cec-8369-ea7685e113a7
https://orbit.dtu.dk/en/publications/d4192b05-bca7-4cec-8369-ea7685e113a7