Results 21 to 30 of about 13,441 (190)

Investigations of the corrosion damage process of the brazed joint AISI 304L/BNi-2

Results in Physics, 2019
One of the most frequently used material combinations to produce heat exchangers for automotive exhaust systems are vacuum brazed AISI 304L/BNi-2 components.
Wolfgang Tillmann, Frank Walther, Matthias Manka, Anke Schmiedt, Lukas Wojarski, Arne Eilers, Dirk Wilhelm Reker   +6 more
doaj   +1 more source

Thermally Assisted Machine Hammer Peening of Arc-Sprayed ZnAl-Based Corrosion Protective Coatings

Journal of Manufacturing and Materials Processing, 2021
Structural elements of offshore facilities, e.g., offshore wind turbines, are subject to static and dynamic mechanical and environmental loads, for example, from wind, waves, and corrosive media.
Andreas Wirtz, Mohamed Abdulgader, Michael P. Milz, Wolfgang Tillmann, Frank Walther, Dirk Biermann   +5 more
doaj   +1 more source

Investigation of the Tribofilm Formation of HiPIMS Sputtered MoS_x Thin Films in Different Environments by Raman Scattering

Lubricants, 2019
Understanding the generation of third body particles and their contribution to the formation of tribofilms of MoSx thin films is still challenging due to a large number of influencing factors.
Wolfgang Tillmann, Alexandra Wittig, Dominic Stangier, Carl-Arne Thomann, Henning Moldenhauer, Jörg Debus, Daniel Aurich, Andreas Brümmer   +7 more
doaj   +1 more source

Issue Information

GAMM-Mitteilungen, Volume 48, Issue 3, September 2025.
wiley   +4 more sources

Effects of AlN and BCN Thin Film Multilayer Design on the Reaction Time of Ni/Ni-20Cr Thin Film Thermocouples on Thermally Sprayed Al₂O₃

Sensors, 2019
Thin film thermocouples are widely used for local temperature determinations of surfaces. However, depending on the environment in which they are used, thin film thermocouples need to be covered by a wear or oxidation resistant top layer.
Wolfgang Tillmann, David Kokalj, Dominic Stangier, Volker Schöppner, Hatice Malatyali   +4 more
doaj   +1 more source

As homenagens do cientista paraense Guilherme de La Penha à Leonhard Euler

REMATEC. Revista de Matemática, Ensino e Cultura, 2020
Apresentamos resultados de uma pesquisa qualitativa assentada em base documental definida a partir das indicações constantes no trabalho de Chaquiam (2012), especificamente quando retrata “os estudos de La Penha sobre a obra de Leonhard Euler”, onde ...
Miguel Chaquiam, Iran Abreu Mendes
doaj   +1 more source

Tribological Characteristics of Tungsten Carbide Reinforced Arc Sprayed Coatings using Different Carbide Grain Size Fractions [PDF]

Tribology in Industry, 2017
Tungsten carbide reinforced coatings play an important role in the field of surface engineering to protect stressed surfaces against wear. For thermally sprayed coatings, it is already shown that the tribological properties get mainly determined by the ...
W. Tillmann, L. Hagen, P. Schröder
doaj  

“Sobre as Somas das Séries de Recíprocos”, de L. Euler

Revista Brasileira de História da Matemática, 2021
Esta é uma tradução do artigo De summis serierum reciprocarum (Sobre a soma das séries de recíprocos), de Leonhard Euler (1707–1783), em que ele resolve o famoso problema de Basileia.
Frederico José Andries Lopes
doaj   +1 more source

EULER E AS PONTES DE KÖNIGSBERG

Revista Brasileira de História da Matemática, 2020
Esta é uma tradução do artigo Solutio problematis ad geometriam situs pertinentis, de Leonhard Euler (1707-1783). Euler resolve o problema conhecido como "As pontes de Königsberg" e, com isso, dá início à teoria dos grafos.
Frederico José Andries Lopes
doaj   +1 more source

REFLETINDO SOBRE TRÊS SÉCULOS DE LEONHARD EULER

Revista Brasileira de História da Matemática, 2020
“No ano de 2007, o mundo todo comemorou o terceiro centenário do nascimento do suíço Leonhard Euler, possivelmente o maior matemático do século XVIII”. Esta frase é fictícia, mas, a um primeiro olhar, parece descrever de modo muito razoável um conjunto ...
Carlos H. B. Gonçalves, Thomás A. S. Haddad   +1 more
doaj   +1 more source