Zobrazeno 1 - 10
of 367
pro vyhledávání: '"Rudolf, Weber"'
Autor:
Daniel Holder, Christian Hagenlocher, Rudolf Weber, Christoph Röcker, Marwan Abdou Ahmed, Thomas Graf
Publikováno v:
Materials & Design, Vol 242, Iss , Pp 113007- (2024)
The great potential to scale the productivity of laser micromachining processes offered by the development of ultrafast lasers with average powers exceeding 1 kW comes at the cost of new physical and technical challenges. The large number of adjustab
Externí odkaz:
https://doaj.org/article/5c677265ef0741e7a2ceeaffb0b9b61e
Autor:
Daniel Holder, Alexander Peter, Marc Kirsch, Sergio Cáceres, Rudolf Weber, Volkher Onuseit, Rudi Kulenovic, Jörg Starflinger, Thomas Graf
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract The latent heat transfer during vapour condensation in the condenser section of passive heat transport devices such as the two-phase closed thermosiphon is limited by film condensation. Dropwise condensation provides an increase of the heat
Externí odkaz:
https://doaj.org/article/d408e85d136f4548a63795fbb548eda1
Publikováno v:
Materials, Vol 17, Iss 5, p 1109 (2024)
Materials processing with ultrashort laser pulses is one of the most important approaches when it comes to machining with very high accuracy. High pulse repetition rates and high average laser power can be used to attain high productivity. By tightly
Externí odkaz:
https://doaj.org/article/39dd282707fb4ecf963808e3ea186a78
Publikováno v:
Metals, Vol 12, Iss 12, p 2000 (2022)
The mechanical properties of parts produced by laser-based powder bed fusion (LPBF) are mainly determined by the grain structure in the material, which is governed by the cooling rate during solidification. This cooling rate strongly depends on the s
Externí odkaz:
https://doaj.org/article/0626d37186414ae0a194123c64c382a5
Publikováno v:
Materials & Design, Vol 160, Iss , Pp 1178-1185 (2018)
Aluminum (AA6016) sheets were welded in overlap configuration to investigate the influence of different beam oscillation patterns on the resulting temperature gradient, the local solidification rate and the resulting grain structure and to compare th
Externí odkaz:
https://doaj.org/article/84ec25ac2d5148cf8f618c563b688814
Publikováno v:
Materials & Design, Vol 203, Iss , Pp 109567- (2021)
Layer-accurate and precisely stepped removal of damaged areas is required for the repairing process of parts made of carbon fibre-reinforced plastic (CFRP) to obtain a high bonding strength of the repair plies in the rebuilding process. Conventional
Externí odkaz:
https://doaj.org/article/b70b20189b8b4e0981023984ae577e9f
Publikováno v:
Micromachines, Vol 13, Iss 6, p 870 (2022)
An analytical model is presented that allows predicting the progress and the final depth obtained by laser micromachining of grooves in metals with ultrashort laser pulses. The model assumes that micromachined grooves feature a V-shaped geometry and
Externí odkaz:
https://doaj.org/article/0b4f438869c849e1914a2acede1a39ee
Publikováno v:
Materials, Vol 15, Iss 6, p 2257 (2022)
Soft X-ray emissions during the processing of industrial materials with ultrafast lasers are of major interest, especially against the background of legal regulations. Potentially hazardous soft X-rays, with photon energies of >5 keV, originate from
Externí odkaz:
https://doaj.org/article/8c0163fe713449029a621a9148e77d07
Publikováno v:
Materials, Vol 14, Iss 18, p 5255 (2021)
The process window for highly efficient laser-based powder bed fusion (LPBF), ensuring the production of parts with low porosity, was determined by analyzing cross-sections of samples that were generated with laser powers varying between 10.8 W and 1
Externí odkaz:
https://doaj.org/article/2d4dd5085c3348baada54a04204d97ec
A novel tribologic system was developed in which volatile lubricants (carbon dioxide-CO2 or nitrogen-N2) were used as a substitute for mineral oil-based lubricants in deep drawing processes. This process allows an intermediate medium to be introduced
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::74aae722fff9c3c0b3bcddfe58b5b1d9
