Results 71 to 80 of about 814,209 (291)

Surface Tension Measurement of Ti‐6Al‐4V by Falling Droplet Method in Oxygen‐Free Atmosphere

Advanced Engineering Materials, EarlyView.
In this article, the temperature‐dependent surface tension of free falling, oscillating Ti‐6Al‐4V droplets is investigated in both argon and monosilane doped, oxygen‐free atmosphere. Droplet temperature and oscillation are captured with one single high‐speed camera, and the surface tension is calculated with Rayleigh's formula.
Johannes May, Finn‐Lennard Janthur, Lena Kreie, Michael Müller, Sarah Seffer, Nick Schwarz, Jörg Hermsdorf, Thomas Hassel, Stefan Kaierle, Ludger Overmeyer   +9 more
wiley   +1 more source

Productivity and morphological characteristics of buffel grass intercropped with butterfly pea under shade conditions

Bioscience Journal, 2017
Forage production in the Brazilian semiarid region can be enhanced by irrigation and shading to maximize water use. We evaluated the productivity and morphological characteristics of buffel grass (Cenchrus ciliaris) intercropped with butterfly pea ...
Augusto Henryque Costa Souza, Tamires Marcelino da Silva Felix, Alane Pains Oliveira do Monte, Mário Adriano Ávila Queiroz, Claudio Mistura, Ana Elisa Oliveira dos Santos, Clistenes Amorim Benício, Clayton Quirino Mendes   +7 more
doaj   +3 more sources

Robust Stability of Quantum Systems with Nonlinear Dynamic Uncertainties

, 2013
This paper considers the problem of robust stability for a class of uncertain nonlinear quantum systems subject to unknown perturbations in the system Hamiltonian.
Petersen, Ian R.
core   +1 more source

Numerical Modeling of Tank Cars Carrying Hazardous Materials With and Without Composite Metal Foam

Advanced Engineering Materials, EarlyView.
Large‐scale puncture models consisting of hazardous materials (HAZMATs) tank car with protective steel–steel composite metal foam (S–S CMF) are solved numerically. Tank car plate with added 10.91–13.33 mm thick S–S CMF layer does not puncture. Protective S–S CMF absorbs impact energy, reduces plate deformation, and prevents shear bands formation ...
Aman Kaushik, Afsaneh Rabiei
wiley   +1 more source

Generalized Quadratic Linearization of Machine Models

Journal of Control Science and Engineering, 2011
In the exact linearization of involutive nonlinear system models, the issue of singularity needs to be addressed in practical applications. The approximate linearization technique due to Krener, based on Taylor series expansion, apart from being ...
Parvathy Ayalur Krishnamoorthy, Kamaraj Vijayarajan, Devanathan Rajagopalan   +2 more
doaj   +1 more source

Robust and Resilient State-dependent Control of Continuous-time Nonlinear Systems with General Performance Criteria [PDF]

, 2014
A novel state-dependent control approach for continuous-time nonlinear systems with general performance criteria is presented in this paper. This controller is optimally robust for model uncertainties and resilient against control feedback gain ...
Long, James, Wang, Xin, Yaz, Edwin E.
core   +1 more source

Set simulations for quadratic systems

IEEE Transactions on Automatic Control, 2003
In this paper, we study the problem of propagating in time a bounding set for the state of a class of nonlinear quadratic systems. The sequence of bounding sets is called the set simulation of the system, and conveys useful information about the stability and qualitative behavior of the possible time responses of the system.
openaire   +2 more sources

Impact of Pre‐Oxidation Treatments on a Recycled MgO/Steel‐Composite as Carbon Free Anode in Aluminum‐Electrolysis Environments

Advanced Engineering Materials, EarlyView.
Cermets (60 vol.% AISI 316L stainless steel, 40 vol.% recycled MgO), intended for use in aluminum electrolysis, were pre‐oxidized in three furnaces with different heating technologies and subjected to a cryolite corrosion test. The different atmospheres influenced the formation of oxide layers, which in turn affected corrosion resistance and ...
Patricia Kaiser, Felix Drechsler, Nora Brachhold, Florian Kerber, Christos G. Aneziris   +4 more
wiley   +1 more source

Estimation of Inexact Multimixed Additive-Quadratic Mappings in Fuzzy Normed Spaces

Journal of Mathematics
In the current study, we introduce a new model of multimixed additive-quadratic mapping and then show that the system of several mixed additive-quadratic equations defining a multimixed additive-quadratic mapping can be unified and presented as a single ...
Abasalt Bodaghi
doaj   +1 more source

Naimark-Sacker Bifurcations in Linearly Coupled Quadratic Maps

, 2004
We report exact analytical expressions locating the $0\to1$, $1\to2$ and $2\to4$ bifurcation curves for a prototypical system of two linearly coupled quadratic maps.
Aranson, Boccaletti, Buskirk, Frøyland, Gallas, Guckenheimer, Hogg, Jason A.C. Gallas, Kook, Kürten, Lind, Lind, Lind, Maistrenko, Marcus W. Beims, Paulo C. Rech, Pikovsky, Strogatz, Waller, Wiesenfeld, Wiggins   +20 more
core   +1 more source