Materials issues are a key concern for the existing nuclear reactor fleet in the United States as material degradation can lead to increased maintenance, increased downtime, and increased risk. Extending reactor life to 60 years and beyond will likely increase susceptibility and severity of both known and new forms of degradation. A multitude of concrete-based structures are typically part of a...

Imaging methods like Synthetic Aperture Focusing Technique (SAFT) are based on the principle of propagation of the measured ultrasonic wave field back to field sources. In the case of a pulse-echo measurement, this back propagation under some approximating conditions leads to an image of the scattering object with well known properties and imperfections. The back propagation through the object ...

Abstract The SAFT‐γ Mie model is a recent version of statistical associating fluid theory (SAFT), which uses group contribution approach to obtain high‐quality equation state. In this work, is, for the first time, extended ionic liquids (ILs). calculated values agree well with experimental data one‐component, binary and ternary systems that contain ILs, thus indicating versatility accuracy exte...

• Density and viscosity behavior of CO 2 + pentane or hexane is determined. Measurements were carried out up to 100 MPa temperatures (293.15 393.15) K. The data good correlated using Tammann-Tait VFT models for densities viscosities, respectively. GERG 2008, PC-SAFT CP-PC-SAFT are examined modelling densities. Viscosities compared with REFPROP10 MYS predictions. This work reports new experiment...

The vapor-liquid equilibrium of binary mixtures of xenon + SF6 has been measured at nine temperatures from 235.34 to 295.79 K and pressures up to 6.5 MPa. The mixture critical line is found to be continuous between the critical points of the pure components, and hence, the system can be classified as type I phase behavior in the scheme of van Konynenburg and Scott. The excess Gibbs free energie...

Ultrasound imaging systems (UIS) are essential tools in nondestructive testing (NDT). In general, the quality of images depends on two factors: system hardware features and image reconstruction algorithms. This paper presents a new image reconstruction algorithm for ultrasonic NDT. The algorithm reconstructs images from A-scan signals acquired by an ultrasonic imaging system with a monostatic t...

We propose a density-functional theory (DFT) describing inhomogeneous polymer-carbon dioxide mixtures based on a perturbed-chain statistical associating fluid theory equation of state (PC-SAFT EOS). The weight density functions from fundamental measure theory are used to extend the bulk excess Helmholtz free energy to the inhomogeneous case. The additional long-range dispersion contributions ar...