Results 321 to 330 of about 1,815,702 (357)

The dynamical Ising-Kac model in 3D converges to Φ 3 4. [PDF]

Probab Theory Relat Fields
Grazieschi P, Matetski K, Weber H.
europepmc   +1 more source

Development and Validation of a One‐Dimensional Finite Difference Simulation Scheme for Polymer Laser Powder Bed Fusion with Application to the Effect of the Inter Layer Time

Advanced Engineering Materials, EarlyView.
The study presents an efficient simulation approach for the polymer laser powder bed fusion process polymers process, validated with polyamide 12, polyamide 6, and polyetherketoneketone. It shows that inter layer time affects part density, with 90s yielding dense parts.
Claas Bierwisch, Bastien Dietemann, Moritz Grünewald, Christian Schlör, Johannes Rudloff   +4 more
wiley   +1 more source

Fractional modeling and numerical investigations of COVID-19 epidemic model with non-singular fractional derivatives: a case study. [PDF]

Sci Rep
Batool H, Khan I, Li W, Junaid M, Zhang J, Nawaz A, Tian L.   +6 more
europepmc   +1 more source

Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

Advanced Engineering Materials, EarlyView.
Additive manufacturing of magnesium alloys by laser is difficult because the melting point of the oxide layer is much higher than the evaporation temperature of the metal underneath. Making the oxide layer thinner can solve this problem. Alloying magnesium with strontium makes the oxide layer thinner, especially at 0.5 wt%.
Elmar Jonas Breitbach, Stefan Julmi, Sabine Behrens, Tatiana Blank, Arvid Abel, Nicole Emminghaus, Ludger Overmeyer, Christian Klose, Hans Jürgen Maier   +8 more
wiley   +1 more source

Event triggered prescribed time trajectory tracking control for unmanned surface vessels with lumped disturbances and prescribed performance constraints. [PDF]

Sci Rep
Sui B, Zhang J, Liu Z.
europepmc   +1 more source

Mechanisms of Increasing Weld Depth during Temporal Power Modulation in High‐Power Laser Beam Welding

Advanced Engineering Materials, EarlyView.
Temporal power modulation increases weld depth in high‐power laser beam welding of dissimilar round bars by nearly 20% compared to same average continuously welded welding power. The mechanism of action also applies to sheet welding and depends on the inertia of keyhole depth for the modulated laser beam power.
Jan Grajczak, David Reynders, Christian Nowroth, Jens Twiefel, Jörg Wallaschek, Sarah Nothdurft, Jörg Hermsdorf, Stefan Kaierle   +7 more
wiley   +1 more source

Linearized boundary control method for density reconstruction in acoustic wave equations. [PDF]

Inverse Probl
Oksanen L, Yang T, Yang Y.
europepmc   +1 more source

Oscillations in Wave Map Systems and Homogenization of the Einstein Equations in Symmetry. [PDF]

Arch Ration Mech Anal
Guerra A, Teixeira da Costa R.
europepmc   +1 more source

Attraction to equilibria in discrete population models with delayed feedbacks: stage-structure versus age-structure. [PDF]

J Math Biol
El-Morshedy HA, Ruiz-Herrera A.
europepmc   +1 more source

Adaptive control and state error prediction of flexible manipulators using radial basis function neural network and dynamic surface control method. [PDF]

PLoS One
Zhang Y, Zhao L.
europepmc   +1 more source