Acoustic emission tests are highly relevant among nondestructive tests applied to equipment in the petroleum industry. This paper presents methodologies for the classification of acoustic emission patterns obtained in ...

In this work it is introduced a new approach to calculate the density of liquids in terms of the energies of the acoustic signals. This method is compared to other methods in the time domain (peak-to-peak amplitudes) and ...

In this work it is introduced a new approach to calculate the density of liquids in terms of the energies of the acoustic signals. This method is compared to other methods in the time domain (peak-to-peak amplitudes) and ...

In this work we show the results of analysis of propagation of sound waves applied for an alert system in the river Chili, in Arequipa city. We used mathematical models, ISO standards, geographical, demographical and ...

To accurately determine the position of a leak in a buried plastic water pipe using acoustic correlation, a good estimate of the speed of noise propagation (wave speed) is required. The factors that affect this wave speed, ...

The construction of images of the Earth's interior using methods as reverse time migration (RTM) or full wave inversion (FWI) strongly depends on the numerical solution of the wave equation. A mathematical expression of ...

Propagation patterns of animal acoustic signals provide insights into the evolution of signal design to convey signalers information to potential recipients. However, propagation properties of vertebrate calls have been ...

A good estimate of the speed of leak noise propagation is necessary to pinpoint the location of a leak using acoustic correlators. Models currently exist for this purpose, but they do not consider uncertainties in the pipe ...