Results 11 to 20 of about 13,441 (190)

Formation of a Nanostructured Ti‐Si‐C‐N Coating by Self‐Organization with Reduced Amorphous Matrix

Advanced Materials Interfaces
A Ti‐Si‐C‐N coating is deposited on AISI H11 hot working steel by plasma‐enhanced chemical vapor deposition (PECVD) to investigate its micro‐ and nanostructure as well as its mechanical and thermal properties.
Alexander Thewes, Lars Bröcker, Phillip Marvin Reinders, Hanno Paschke, Tristan Brückner, Wolfgang Tillmann, Julia Urbanczyk, Nelson Filipe Lopes Dias, Michael Paulus, Christian Sternemann   +9 more
doaj   +2 more sources

A Primer on Inference and Prediction With Epidemic Renewal Models and Sequential Monte Carlo. [PDF]

Stat Med
ABSTRACT Renewal models are widely used in statistical epidemiology as semi‐mechanistic models of disease transmission. While primarily used for estimating the instantaneous reproduction number, they can also be used for generating projections, estimating elimination probabilities, modeling the effect of interventions, and more.
Steyn N, Parag KV, Thompson RN, Donnelly CA.   +3 more
europepmc   +2 more sources

Adapting the Surface Integrity of High-Speed Steel Tools for Sheet-Bulk Metal Forming

Journal of Manufacturing and Materials Processing, 2022
New manufacturing technologies, such as Sheet-Bulk Metal Forming, are facing the challenges of highly stressed tool surfaces which are limiting their service life.
Wolfgang Tillmann, Dominic Stangier, Alexander Meijer, Eugen Krebs, Alexander Ott, Timo Platt, Nelson Filipe Lopes Dias, Leif Hagen, Dirk Biermann   +8 more
doaj   +1 more source

Influences of substrate pretreatments and Ti/Cr interlayers on the adhesion and hardness of CrAlSiN and TiAlSiN films deposited on Al2O3 and ZrO2-8Y2O3 thermal barrier coatings

Results in Physics, 2019
Using atmospheric plasma spraying (APS), ceramic Al2O3 and ZrO2-8Y2O3 thermal barrier coatings (TBC) were applied on AISI H11 (1.2343) and subsequently polished to serve as a substrate to magnetron sputter CrAlSi7.5N and TiAlSi7.9N films.
Wolfgang Tillmann, Alexander Fehr, Dominic Stangier, Markus Dildrop   +3 more
doaj   +1 more source

Did Euler Know Quadratic Reciprocity?: New Insights from a Forgotten Work [PDF]

, 2014
The authors examine Leonhard Euler\u27s contribution to the discovery of the mathematical concept of quadratic ...
Bialek, Paul, Klyve, Dominic
core   +1 more source

Low cycle fatigue of components manufactured by rod extrusion: Experiments and modeling

Advances in Industrial and Manufacturing Engineering, 2023
The performance of formed components is significantly influenced by the initiation of ductile damage. Preceding forming operations, for instance, affect the service life determined in fatigue tests.
Kai Langenfeld, Lars Lingnau, Jan Gerlach, Patrick Kurzeja, Robin Gitschel, Frank Walther, Tobias Kaiser, Till Clausmeyer   +7 more
doaj   +1 more source

Reduction of Ejection Forces in Injection Molding by Applying Mechanically Post-Treated CrN and CrAlN PVD Films

Journal of Manufacturing and Materials Processing, 2019
In injection molding, the reduction of ejection forces is a process relevant aspect to improve the production rates. For this purpose, CrN and CrAlN films were sputtered on cylindrical and quadratic AISI H11 cores of an injection mold in order to ...
Wolfgang Tillmann, Dominic Stangier, Nelson Filipe Lopes Dias, Nikolai Gelinski, Michael Stanko, Markus Stommel, Eugen Krebs, Dirk Biermann   +7 more
doaj   +1 more source

Low Cycle Fatigue Performance of Additively Processed and Heat-Treated Ti-6Al-7Nb Alloy for Biomedical Applications

Metals, 2022
In biomedical engineering, laser powder bed fusion is an advanced manufacturing technology, which enables, for example, the production of patient-customized implants with complex geometries.
Maxwell Hein, David Kokalj, Nelson Filipe Lopes Dias, Dominic Stangier, Hilke Oltmanns, Sudipta Pramanik, Manfred Kietzmann, Kay-Peter Hoyer, Jessica Meißner, Wolfgang Tillmann, Mirko Schaper   +10 more
doaj   +1 more source

Fundamental Physics and the Fine-Structure Constant [PDF]

, 2016
From the exponential function of Euler’s equation to the geometry of a fundamental form, a calculation of the fine-structure constant and its relationship to the proton-electron mass ratio is given.
Sherbon, Michael A.
core   +5 more sources

Influence of the Reaction Injection Moulding Process on the Thermomechanical Behaviour of Fast Curing Polyurethane

Journal of Manufacturing and Materials Processing, 2022
In this contribution, the influence of the reaction injection moulding process on the thermomechanical material behaviour of aliphatic hexamethylene diisocyanate (HDI) based fast curing polyurethane is demonstrated.
Peter Lehmenkühler, Markus Stommel
doaj   +1 more source