Different studies have demonstrated that vibration characteristics are sensitive to debonding in composite structures. Nevertheless, one of the main restrictions of vibration measurements is the number of degrees of ...

We propose an optical encryption technique where the encrypted field and the decrypting key are obtained by three-step phase-shifting interferometry and registered as digital Fresnel holograms in a joint transform correlator ...

Introduction: Voice is multidimensional and cannot be measured by a single evaluative metric. The development of high-speed imaging technologies used in voice assessment tools dates back to the 1930s. It was only with the ...

This paper provides experimental results on investigations for the validation of photogrammetric strain measurements of ultra-high-performance concrete (UHPC)-prisms subjected to static and cyclic bending-tensile stress. ...

La velocimetría por imágenes de partículas es una técnica de medición de velocidad no intrusiva al medio, basada en procesamiento digital de imágenes, la cual permite obtener el campo de velocidades de un fluido en movimiento. ...

The vibrational behavior of composite structures has been demonstrated as a useful feature for identifying debonding damage. The precision of the damage localization can be greatly improved by the addition of more measuring ...

Atomization is a process of high relevance in the combustion efficiency in a diesel cycle engine and in the emission of pollutant and particulate matter. In order to meet vehicle emission standards, new technologies have ...

The objective of this study was to develop a system to classify grains using digital image processing, to develop and evaluate the system. We used grains of annual agricultural crops, corn (Zea mays L.), soybean (Glycine ...