Materials Literature
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<div class="htmlview paragraph">Simulation of catalytic exhaust gas aftertreatment systems is a cost and time saving method in the early development design stage to meet current and upcoming emission standards. Three-way catalytic (TWC) converter systems which target for 99% HC and NOx conversion need to be opti…
<div class="htmlview paragraph">The objective of this study to introduce the newly developed Discrete Channel Method (DCM) as a fast and efficient method for the prediction of the 3d and transient behavior of honeycomb-type catalytic converters in automotive applications. The approach is based on the assumption…
Abstract In past studies the oxygen inhibition effect on the UV curing of polymer coatings has been extensively studied with the focus on oxygen inhibition mechanism and photocuring kinetics. In this study, several advanced surface characterization techniques have been applied to investigate the influences of the pres…
The linear relationship, V = μ F where V is the interface velocity, μ is the mobility and F is the driving force is captured only under restricted conditions in conventional Monte Carlo simulations of recrystallization that use a bulk deformation stored energy term in the energy Hamiltonian. In this paper, the migrati…
<div class="htmlview paragraph">To realize the high performance of the three-way catalyst, this development focused on the heat resistance of the CeO<sub>2</sub>-ZrO<sub>2</sub> solid solution (CZ) that possesses the oxygen storage capacity (OSC). A new concept of the OSC compound with hi…
<div class="htmlview paragraph">Presented in this paper is an on-line method for estimating the oxygen storage capacity contained within a catalyst. The oxygen storage capacity of a catalyst changes over time due to catalyst brick temperatures, poisoned catalyst sites, and thermal aging. Information regarding th…
<div class="htmlview paragraph">Reversible catalyst deactivation dynamics can have a significant effect on both conversion efficiency and post-catalyst EGO sensor distortion, yet are often ignored in conventional oxygen storage modeling for on-board catalyst control and OBD systems. The aim of the present paper…
We consider the demixing of a binary fluid mixture, under gravity, which is steadily driven into a two-phase region by slowly ramping the temperature. We assume, as a first approximation, that the system remains spatially isothermal, and we examine the interplay of two competing nonlinearities. One of these arises bec…
Various parameters in the structural features of the Sb x Ge 28− x Se 72 glassy system are studied as a function of average coordination number ⟨ r ⟩ in the light of recently proposed models for network glasses. The relation between the chemical ordered covalent network model and the constraint theory on the structura…
<div class="htmlview paragraph">Magnesium die casting alloys for elevated temperature applications are coming of age. Several research centers and companies have been working on alloy systems based on alkaline earth and rare earth alloying additions to push the limits for the creep performance of Mg-based die ca…
<div class="htmlview paragraph">Selective Catalytic Reduction (SCR) of Nitrogen Oxide (NOx) emissions using ammonia or a 32.5%-urea solution has been used for many years in a variety of stationary applications. These applications include but are not limited to coal fired power plants, gas turbines, diesel locomo…
The electronic properties of the ferroelectric compound ${\mathrm{Sn}}_{2}{\mathrm{P}}_{2}{\mathrm{S}}_{6}$ are investigated by x-ray photoelectron spectroscopy and soft x-ray fluorescence spectroscopy. Excellent agreement between theoretical calculations and experimental data for the electronic structure of the inves…
<div class="htmlview paragraph">Numerical simulations are increasingly assisting research and development in the field of emission control of automotive vehicles.</div> <div class="htmlview paragraph">Our work focuses on the prediction of the tail-pipe emissions, based on a numerical simulation of th…
<div class="htmlview paragraph">A new exhaust emission control system has been developed which complies with the world's most severe emission standard: CARB PZEV. Leaner combustion in cold condition was enabled and rapid warm-up of a close-coupled catalyst was realized by utilizing a newly developed Intake Air C…
<div class="htmlview paragraph">Current accelerated weathering protocols such as SAE J1960 or ASTM G26 do not provide reliable, predictive results for engineering thermoplastics. Correlation factors among resin types and even different colors of a single resin have variations that are 60-100% of the mean at the…
Laser shock processing (LSP) is an emerging industrial process in the field of surface treatment with particular application to the improvement of fatigue and corrosion properties. In the standard configuration, the metal sample is coated with a sacrificial layer in order to protect it from detrimental thermal effects…
<div class="htmlview paragraph">This paper describes a new concept for a Ford F-150 light truck Front End Support Assembly (FESA) based on a one-piece die cast structural magnesium component. This new FESA reduces the number of parts and therefore the complexity of manufacturing and assembly, it integrates a mul…
This paper examines the recovery of liquid from stable overflowing foams. The foams are formed by bubbling gas into the bottom of a column and the liquid is collected from the foam that flows over the lip at the top. The paper demonstrates, using a foam drainage equation, that the recovery of liquid will rapidly decre…
Abstract Hydrolytic degradation data from a wide variety of experiments on Estane 5703, a commercial poly(ester urethane), are modeled with an A AC 2 mechanism of reversible esterification and hydrolysis together with a cluster model for water concentration. The experimental conditions spanned a range of temperatures…
<div class="htmlview paragraph">The influences of laboratory-induced hydrogen on the tensile deformation and fracture behavior of selected sheet steels including conventional DQSK and HSLA steels as well as newer DP and TRIP grades were evaluated. The effects of cold work, simulated paint baking, and natural agi…