Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Ingemar Eriksson"'
Publikováno v:
Optics & Laser Technology. 100:1-6
Laser - material interactions such as welding, heat treatment and thermal bending generate thermal gradients which give rise to thermal stresses and strains which often result in a permanent distortion of the heated object. This paper investigates th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7aa32a09b602456ac9484bef8f0fd78d
https://doi.org/10.1016/j.optlastec.2017.09.053
https://doi.org/10.1016/j.optlastec.2017.09.053
Publikováno v:
Physics Procedia. 41:119-127
Laser arc hybrid welding has been a promising technology for three decades and laser welding in combination with gas metal arc welding (GMAW) has shown that it is an extremely promising technique. On the other hand the process is often considered com
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1410acc053d24aa7602349d7b288b3c1
Publikováno v:
Physics Procedia. 39:27-32
Regular drop formation (humping) along the weld root during laser welding was studied by high speed imaging of the melt pool underneath the workpiece. The formation of droplets towards the rear of this weld pool was seen to be primarily caused by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eea9c05cf6032de54ec729020bc4f532
Publikováno v:
Optics and Lasers in Engineering. 49:1352-1359
This paper describes two new techniques for monitoring the quality of laser welds by statistical analysis of the reflected light signal from the weld surface. The first technique involves an algorithm that analyses the variance of the peak values of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::183ae046fa0080d1a7d8c96642acfe8c
https://doi.org/10.1016/j.optlaseng.2011.05.010
https://doi.org/10.1016/j.optlaseng.2011.05.010
Publikováno v:
Optics and Lasers in Engineering. 49:188-194
This paper considers the point that it is not possible to interpret individual weld perturbations from the raw electromagnetic feedback collected from laser weld zones. The presentation of electromagnetic data as a 3D cloud is presented as a new, use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec5447fd7a0361abaf5021010295694b
https://doi.org/10.1016/j.optlaseng.2010.08.018
https://doi.org/10.1016/j.optlaseng.2010.08.018
Autor:
Ingemar Eriksson
Publikováno v:
Classical and Quantum Gravity. 23:2279-2290
We show that for hypersurface orthogonal Killing vectors, the corresponding Chevreton superenergy currents will be conserved and proportional to the Killing vectors. This holds for four-dimensional Einstein-Maxwell spacetimes with an electromagnetic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74a6e9f9e93d893812988887310f9b33
https://doi.org/10.1088/0264-9381/23/7/005
https://doi.org/10.1088/0264-9381/23/7/005
Publikováno v:
International Social Security Review. 54:3-17
In this article we analyse the dynamics of the welfare state, focusing on the Netherlands and Sweden. The basic question is whether the different social systems of these countries result in differences in persistency of benefit dependency. We conclud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::488e75c2fd8ad0bfe879f3df780afe24
https://doi.org/10.1111/1468-246x.00082
https://doi.org/10.1111/1468-246x.00082
The flow of molten metal on the front wall of a laser generated welding keyhole has been observed by high speed photography, optically measured by mapping the flow of ripples on the liquid surface and theoretically calculated. A clear downward flow c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd78168097630c61914ccb4723617255
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-4447
http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-4447
Autor:
Kari Mäntyjärvi, Jan Granström, Jesper Sundqvist, Markku Keskitalo, Ingemar Eriksson, Alexander Kaplan, Karl-Gustaf Sundin
Publikováno v:
International Congress on Applications of Lasers & Electro-Optics.
Laser welded products often have to be designed and optimized for fatigue load. The most common method to characterize the fatigue strength is periodic loading of a weld for different peak loads to identify an S-N-curve. To obtain information on how
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e27f1033be6126707a2bce78350f0cfa
https://doi.org/10.2351/1.5062944
https://doi.org/10.2351/1.5062944
Publikováno v:
International Congress on Applications of Lasers & Electro-Optics.
The regular formation of drops, called the humping effect in laser welding has been studied and analyzed by several research groups, however preferably for the top surface. Humping phenomena at the root have been much less investigated, even though t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::27fe24cb83a65b7c2767557fd55cddcc
https://doi.org/10.2351/1.5062887
https://doi.org/10.2351/1.5062887