A. Ibanez

TL;DR: In this work, an ultrasonic NDE technique to estimate the porosity of concrete is developed based on the analysis of the mechanical behaviour of mortar probes built with calibrated sand, in which the concentration of water-cement mixture has been varied.

TL;DR: In this article, an innovative ultrasound technique designed to detect and quantify flats formed in the rolling surface of railway wheels is presented, where ultrasonic pulses (Rayleigh waves) are sent over a measuring rail.

TL;DR: This method, the envelope detection filter (EDF), is based on a nonlinear function of two consecutive samples of the input sequence and provides a quite good approximation to the analytical signal magnitude for a wide range of signals and conditions.

TL;DR: In this paper, a new approach that determines the elastic properties of three-phase materials is presented, taking into account the microstructural characteristics of the constituent phases, as well as their elastic properties.

TL;DR: This work presents a novel method for digital ultrasound beamforming based on programmable table look-ups, in which vectors containing coded focusing information are efficiently stored, achieving an information density of a fraction of bit per acquired sample.