Examinando por Autor "Galleguillos Silva, Renato Bruno"

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    Phase-controlled array of ultrasonic transducers for active focusing of waves in air. Applied to foam abatement
    (AMA Science, 2025-09-21) Galleguillos Silva, Renato Bruno
    This work presents the development and experimental validation of an annular array of 56 ultrasonic transducers operating at 25 kHz for contactless industrial foam abatement. Through phase control algorithms, the system achieves acoustic focusing in air, generating pressure levels exceeding 150 dB SPL at the focal point. Experimental results demonstrate successful foam disruption capabilities, and the scalability was also validated through numerical simulations in COMSOL Multiphysics and laboratory testing.
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    Ítem
    Real-Time Ultrasonic Inspection System for Oil Content in Emulsions for Production Lines
    (IEEE, 2025-10-28) Galleguillos Silva, Renato Bruno
    This work presents a real-time ultrasonic inspection system with temperature compensation for monitoring oil content in emulsion production lines across food, pharmaceutical, cosmetic and oil refining industries. The system enables continuous, non-destructive quality control by measuring ultrasonic wave propagation velocity through oil-in-water (O/W) emulsions. A specialized measurement chamber with submersible piezoelectric transducers and automated signal processing algorithms provides accurate concentration estimates within 2% error of actual values. Experimental validation with almond oil emulsions demonstrates a strong linear correlation between propagation velocity and oil concentration, with temperature compensation ensuring reliability under industrial operating conditions. The system’s non-invasive nature and real-time capabilities make it suitable for inline implementation in production lines, offering significant advantages over traditional batch testing methods. Index Terms—inline inspection, ultrasonic monitoring, emulsion production, food processing, pharmaceutical manufacturing, cosmetic production, water recovery