For ultrasound in the hundred kilohertz regime concrete is a very inhomogeneous propagation material. The prescribed definition of aggregates with regard to the respective percentage, the size distribution and the material composition together with the percentage of air inclusions can be realized as a computer model to serve as a platform for elastic wave propagation simulations. As a simulatio...

Abstract The implementation of automated testing systems based on six degrees freedom (DOF) robotic manipulators is the actual trend in ultrasonic equipment development. Such are able to provide fast evaluation with respect surface object. In this work, post-processing algorithm Synthetic Aperture Focusing Technique (SAFT) suggested. allows presenting results form high-resolution imagery intern...

In this work, the SAFT-VR Mie equation of state is used in conjunction with Dubinin-Radushkevich-Astakhov (DRA) and Steele potentials, according to Multicomponent Potential Theory Adsorption (MPTA), model thermodynamic behavior fluids confined porous media. The problem specifications are temperature, volume, number moles each component, yielding a Helmholtz energy-minimization problem. Calculat...

The superior properties of specific ionic liquids (ILs), such as negligible volatility, high thermal stability, flexible designability, and their affinity to capture CO2, make them an attractive alternative chemical physical solvents that are currently used in CO2 processes. However, a limitation use ILs for industrial is viscosity compared conventional solvents, which leads lower rate higher p...

Traditional ultrasonic testing uses a single probe or phased array to investigate and visualize defects by adapting certain imaging algorithms. The time-domain synthetic aperture focusing technique (T-SAFT) is an algorithm that employs scan along the test specimen in various positions, generate inspection images with better resolution. Both T-SAFT probes are contact methods limited bandwidth. T...

Molecular Dynamics (MD) simulations of direct and derivative thermodynamic properties of the Mie n-6 fluid (n = 8, 10 and 12) have been performed for liquid to supercritical states. Using the results, has been carried out an in depth test of the monomer-monomer interaction estimation of a recently derived SAFT-VR equation of state (Lafitte et al. J. Chem. Phys., 2006, 124, 024509) based on the ...