Results 111 to 120 of about 1,965,065 (298)

EXPONENTIAL DECAY FOR A NEUTRAL WAVE EQUATION

Journal of Applied Analysis & Computation, 2017
Summary: A strongly damped wave equation involving a delay of neutral type in its second order derivative is considered. It is proved that solutions decay to zero exponentially despite the fact that delays are, in general, sources of instability.
openaire   +2 more sources

Improved Oscillation Criteria for 2nd-Order Neutral Differential Equations with Distributed Deviating Arguments

, 2020
In this study, we establish new sufficient conditions for oscillation of solutions of second-order neutral differential equations with distributed deviating arguments. By employing a refinement of the Riccati transformations and comparison principles, we
Rami Ahmad El-Nabulsi, Waad Muhsin, Osama Moaaz, Omar Bazighifan   +3 more
core   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

Advanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig, Michael Werner, Christian Rotsch   +2 more
wiley   +1 more source

Periodic solutions of the neutral Duffing Equations

Electronic Journal of Qualitative Theory of Differential Equations, 2000
We consider the neutral delay Duffing Equations of the form $$ax''(t)+bx'(t)+cx(t)+g(x(t-\tau_1), \ x'(t-\tau_2), x''(t-\tau_3))=p(t)=p(t+2\pi).$$ and establish a sufficient coudition for the existence of $2\pi$-periodic solution of above equations.
Zicheng Wang, Z. Zhang, J. Yu
doaj   +1 more source

Oscillation Criteria in Higher Order Neutral Equations

Journal of Mathematical Analysis and Applications, 1994
The paper deals with oscillatory criteria for the solutions of a scalar higher order neutral equation of mixed type (with delayed and advanced arguments), with constant coefficients. As a main result, the classical characterization of oscillations by the characteristic equation is extended to such equations.
Bilchev, S. J., Grammatikopoulos, M. K., Stavroulakis, I. P.   +2 more
openaire   +2 more sources

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source

A Class of Neutral Equations with the Fixed Point Property [PDF]

Proceedings of the National Academy of Sciences, 1970
For a neutral functional differential equation with a stable operator, D, it is shown that the solution operator is the sum of a contraction and a completely continuous operator.
openaire   +2 more sources

3D‐Printed Titanium Gyroid Scaffold Structure Integrated With Tough Hybrid Materials for Cartilage Replacement

Advanced Engineering Materials, EarlyView.
This study proposes a potential device design for joint cartilage replacement. Silica‐polytetrahydrofuran (SiO2‐PolyTHF) hybrids with customizable mechanical properties were developed to mimic the characteristics of a natural meniscus. These were synthesized through a two‐pot sol–gel hybrid process.
Yu‐Chien Lin, Gloria R. Young, Francesca Tallia, Reece N. Oosterbeek, Shaaz Ghouse, Edward Spiers, Nupur Kohli, Tom Briggs, Marc Masen, Siwei Li, Ren‐Jei Chung, Jonathan R. T. Jeffers, Julian R. Jones   +12 more
wiley   +1 more source

Elastic–Plastic Modeling and Experimental Characterization of Granular Jamming Actuators

Advanced Engineering Materials, EarlyView.
Granular jamming enables rapid switching between soft and rigid mechanical states. Here, a reduced‐order elastic‐perfectly‐plastic beam framework captures pressure‐dependent loading, unloading, residual deformation, and hysteresis in jammed beams, while matching three‐point bending experiments across materials and geometries. The framework links design
Saheli Patel, Prashant K. Purohit, Jordan R. Raney   +2 more
wiley   +1 more source

Examining discordance in spirometry reference equations: A retrospective study

Physiological Reports
This study aimed to evaluate discordance, binary classification, and model fit between race‐predicted and race‐neutral spirometry prediction equations.
Gerald S. Zavorsky, Sherif Elkinany, Abdullah Alismail, Suman B. Thapamagar, Michael H. Terry, James D. Anholm, Paresh C. Giri   +6 more
doaj   +1 more source