Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Fredrik Sikström"'
Publikováno v:
Sensors, Vol 22, Iss 10, p 3881 (2022)
Laser beam welding offers high productivity and relatively low heat input and is one key enabler for efficient manufacturing of sandwich constructions. However, the process is sensitive to how the laser beam is positioned with regards to the joint, a
Externí odkaz:
https://doaj.org/article/220addfbc87e46beb7d1c39e0767b5f7
Autor:
Agnieszka Kisielewicz, Esmaeil Sadeghi, Fredrik Sikström, Anna-Karin Christiansson, Gianfranco Palumbo, Antonio Ancona
Publikováno v:
Materials & Design, Vol 186, Iss , Pp - (2020)
In this work, a fast optical spectrometer was used to monitor the Directed Energy Deposition (DED) process, during the deposition of Alloy 718 samples with different laser power, thus different energy inputs into the material. Spectroscopic measureme
Externí odkaz:
https://doaj.org/article/d3fb36ac29c0449cafb3742e7e3feada
Autor:
Agnieszka Kisielewicz, Karthikeyan Thalavai Pandian, Daniel Sthen, Petter Hagqvist, Maria Asuncion Valiente Bermejo, Fredrik Sikström, Antonio Ancona
Publikováno v:
Metals, Vol 11, Iss 4, p 634 (2021)
This study investigates the influence of resistive pre-heating of the feedstock wire (here called hot-wire) on the stability of laser-directed energy deposition of Duplex stainless steel. Data acquired online during depositions as well as metallograp
Externí odkaz:
https://doaj.org/article/8c88625ca3d64bc483def039b1d2ac2b
Publikováno v:
Sensors; Volume 22; Issue 10; Pages: 3881
Laser beam welding offers high productivity and relatively low heat input and is one key enabler for efficient manufacturing of sandwich constructions. However, the process is sensitive to how the laser beam is positioned with regards to the joint, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=multidiscipl::a2eb5500e2c009ee3c116e6d5edcc9f5
Thermo-fluid dynamic and experimental approaches are used to investigate the influence of 20° uphill, downhill and sideway substrate orientation during metal deposition over a previously deposited bead in a V-groove. The computational fluid dynamic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2659::1f768108fcb2ffdc512ef578c48b47c6
https://zenodo.org/record/5528309
https://zenodo.org/record/5528309
Autor:
Isabelle Choquet, Håkan Nilsson, Fredrik Sikström, J.F. Gamarra-Delgado, F.A. Huamán-Mamani, Kjell Hurtig, Pradip Aryal
Publikováno v:
Proceedings of the 7th World Congress on Mechanical, Chemical, and Material Engineering
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86130e77b39f077abf334bfb0e82f257
https://doi.org/10.11159/htff21.130
https://doi.org/10.11159/htff21.130
A computational fluid dynamics approach is used to analyse the influence of beam shaping in fusion welding on melt thermal flow. Three beam shapes are studied at several welding travel speeds: a reference Gaussian profile and its elliptic elongations
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abb02c4f7e21adec78332b29276881ff
http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-17409
http://urn.kb.se/resolve?urn=urn:nbn:se:hv:diva-17409
Publikováno v:
Proceedings of the 6th World Congress on Mechanical, Chemical, and Material Engineering.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d8cb697c618b9b32b075bb55a01c0b
https://doi.org/10.11159/htff20.125
https://doi.org/10.11159/htff20.125
Publikováno v:
Procedia Manufacturing. 36:42-49
This paper presents an experimental study where a vision camera integrates coaxially into a laser beam welding tool to monitor beam deviations (beam offset) in laser stake welding of T-joints. The ...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3b6dec6b2bfa4cff43b9e8c2205320bb
https://doi.org/10.1016/j.promfg.2019.08.007
https://doi.org/10.1016/j.promfg.2019.08.007
Publikováno v:
Procedia Manufacturing. 36:72-79
This paper presents an experimental study where a photodiode integrated into a laser beam welding tool is used to monitor laser beam spot deviations from the joint, the beam offset. The photodiode system is cost effective and typically easy to implem
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::534adcf8a3eeb9549d146e3890a4f146
https://doi.org/10.1016/j.promfg.2019.08.011
https://doi.org/10.1016/j.promfg.2019.08.011