Results 51 to 60 of about 643,761 (325)

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

Euler’s constant: Euler’s work and modern developments [PDF]

Bulletin of the American Mathematical Society, 2013
v4 98 pages (pagewidth decreased), 321 references, text agrees with published version (but with less reference information); v5 post-publication, introduces a mistake, Theorem 3.1.3 is ok as originally stated, v6, like the monkey's paw, changes back, but corrects typo in (3.1.8) and in \zeta(1-k) formula two lines ...
openaire   +2 more sources

Roadmap to Precision 3D Printing of Cellulose: Rheology‐Guided Formulation, Fidelity Assessment, and Application Horizons

Advanced Materials Technologies, EarlyView.
This critical review presents a comprehensive roadmap for the precision 3D printing of cellulose. Quantitative correlations link ink formulation and rheological properties to print fidelity and final material performance. This framework guides the development of advanced functional materials, from biomedical scaffolds to electromagnetic shielding ...
Majed Amini, Hadi Hosseini, Seyyed Alireza Hashemi, Mohammad Arjmand   +3 more
wiley   +1 more source

Structure and tribo-mechanical properties of Si- and W-containing amorphous carbon based multilayers

Applied Surface Science Advances, 2021
Designing the film architecture of amorphous carbon based systems is effective in tailoring the tribo-mechanical properties. For this purpose, alternating a-C and a-C:X layers, with X = Si or W, were grown with a layer ratio of 1, a bilayer period of ...
Wolfgang Tillmann, Nelson Filipe Lopes Dias, Dominic Stangier, Serguei Matveev, Carl-Arne Thomann, Jörg Debus   +5 more
doaj   +1 more source

Direct Laser Writing of Magnetic Micro Actuators With a Stimulus‐Responsive Compliant Hinge

Advanced Materials Technologies, EarlyView.
This study presents a versatile modular design strategy for adaptive 3D microactuators. Using two‐photon‐induced C,H insertion reactions within solid polymer layers, chemically distinct hinge and stimulus responsive materials are patterned in one step. The hinge's properties enable tunable motion, mechanical control, and reconfigurable actuation across
Eleonora Galli, Nicolas Geid, Yizheng Liu, Friederike Strahl, Jürgen Rühe   +4 more
wiley   +1 more source

Establishment of a Rotary Print Head to Effect Residual Stresses and Interlayer Bonding in an FLM-Process

Journal of Manufacturing and Materials Processing, 2021
In fused layer modeling (FLM) manufacturing technology, there is an increased demand for semi-crystalline materials due to their favorable mechanical properties, such as high strength and toughness.
Philipp Bengfort, Dennis Stracke, Bernd Künne   +2 more
doaj   +1 more source

The converse problem for the multipotentialisation of evolution equations and systems

, 2010
We propose a method to identify and classify evolution equations and systems that can be multipotentialised in given target equations or target systems. We refer to this as the {\it converse problem}.
Bluman G. W., Calogero F., Euler M., Euler M., Euler N., Euler N., Euler N., Ibragimov N. H., Petersson N., Reyes E. G., Steeb W.-H.   +10 more
core   +1 more source

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

Advanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu, Jingzong Zhou, Caio Mucchiani, Konstantinos Karydis   +3 more
wiley   +1 more source

Bias-voltage effect on the TiN nanoparticle injection into magnetron sputtered CrN thin films towards nc-TiN/nc-CrN composites

Applied Surface Science Advances, 2021
The formation of a nanocomposite structure is thermodynamically driven by spinodal decomposition in at least two phases. With respect to the suppression of solid solution formation, artificial nc-TiN/nc-CrN composites were deposited using a novel hybrid ...
Wolfgang Tillmann, David Kokalj, Dominic Stangier, Qingqing Fu, Frank Einar Kruis   +4 more
doaj   +1 more source

Blowup for the Euler and Euler-Poisson Equations with Repulsive Forces

, 2010
In this paper, we study the blowup of the $N$-dim Euler or Euler-Poisson equations with repulsive forces, in radial symmetry. We provide a novel integration method to show that the non-trivial classical solutions $(\rho,V)$, with compact support in $[0,R]
Yuen, Manwai
core   +1 more source