Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Matthias Markl"'
Publikováno v:
Modelling, Vol 5, Iss 1, Pp 367-391 (2024)
Solid–liquid phase transitions of metals and alloys play an important role in many technical processes. Therefore, corresponding numerical process simulations need adequate models. The enthalpy method is the current state-of-the-art approach for th
Externí odkaz:
https://doaj.org/article/ce551e5435984160ab80de2b8dad72b1
Publikováno v:
Additive Manufacturing Letters, Vol 10, Iss , Pp 100220- (2024)
Electron beam powder bed fusion offers the unique opportunity to observe the process by measuring scattered electrons on a metal detector. This technique is the state of the art in generating electron optical images of the build area after melting us
Externí odkaz:
https://doaj.org/article/f2fea613f0de49789cb93feda3e0c4dc
Publikováno v:
Modelling, Vol 4, Iss 3, Pp 336-350 (2023)
The reliable and repeatable fabrication of complex geometries with predetermined homogeneous properties is still a major challenge in electron beam powder bed fusion (PBF-EB). Although previous research identified a variety of process parameter–pro
Externí odkaz:
https://doaj.org/article/8866f89710c141e2a73d130184401bd1
Publikováno v:
Materials & Design, Vol 237, Iss , Pp 112528- (2024)
Hot cracking is a major challenge in the additive manufacturing of Ni-base superalloys. Most cracking indicators only consider the alloy composition and its effects on solidification behavior, strength, and ductility. We propose a new model that exte
Externí odkaz:
https://doaj.org/article/a608762e2ea44153a99e0d648b404ba6
Publikováno v:
Crystals, Vol 14, Iss 2, p 149 (2024)
The latest advances in additive manufacturing have given rise to an increasing interest in additively built lattice structures due to their superior properties compared to foams and honeycombs. The foundation of these superior properties is a tailore
Externí odkaz:
https://doaj.org/article/bb20ec3a17d5420c89f1d84a44144619
Autor:
Benjamin Baumgärtner, Richard Rothfelder, Sandra Greiner, Christoph Breuning, Jakob Renner, Michael Schmidt, Dietmar Drummer, Carolin Körner, Matthias Markl, Tino Hausotte
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 3, p 95 (2023)
X-ray-computed tomography (CT) is today’s gold standard for the non-destructive evaluation of internal component defects such as cracks and porosity. Using automated standardized evaluation algorithms, an analysis can be performed without knowledge
Externí odkaz:
https://doaj.org/article/1f16db08799d4823b57f8c7762f4abfb
Autor:
Florian Nahr, Michael Rasch, Christian Burkhardt, Jakob Renner, Benjamin Baumgärtner, Tino Hausotte, Carolin Körner, Paul Steinmann, Julia Mergheim, Michael Schmidt, Matthias Markl
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 3, p 82 (2023)
One major advantage of additive manufacturing is the high freedom of design, which supports the fabrication of complex structures. However, geometrical features such as combined massive volumes and cellular structures in such parts can lead to an une
Externí odkaz:
https://doaj.org/article/b5eaa3e0edb9492b8b9c691acc51c324
Publikováno v:
Journal of Manufacturing and Materials Processing, Vol 7, Iss 3, p 87 (2023)
The recent success of the process monitoring method Electron Optical Imaging, applied in the additive manufacturing process Electron Beam Powder Bed Fusion, necessitates a clear understanding of the underlying image formation process. Newly developed
Externí odkaz:
https://doaj.org/article/762e81ffe1c04d82b4df7c2500a78c34
Autor:
David Wimler, Katharina Käsznar, Michael Musi, Christoph Breuning, Matthias Markl, Jozef Keckes, Helmut Clemens, Carolin Körner, Svea Mayer
Publikováno v:
Materials & Design, Vol 212, Iss , Pp 110187- (2021)
Additive manufacturing of lightweight intermetallic γ-TiAl based alloys combines process-related freedom of design with material-specific excellent high-temperature properties. Nevertheless, where locally melting the powder by an electron beam, ther
Externí odkaz:
https://doaj.org/article/c60c24c32ce44bfb8fe9385c24b41e10
Publikováno v:
Materials, Vol 15, Iss 14, p 4754 (2022)
This study introduces and verifies a basic mechanism of surface topography evolution in electron beam additive manufacturing (E-PBF). A semi-analytical heat conduction model is used to examine the spatio-temporal evolution of the meltpool and segment
Externí odkaz:
https://doaj.org/article/ac51bc3a1f294bcb8c60e371e5814b4d