Dr. Suresh Kaluvan Profile

Dr. Suresh Kaluvan

Post Doctoral Research Associate

SPIE Involvement:

Author

Area of Expertise:

Resonance sensors

Publications (4)

Proceedings Article | 3 April 2018 Presentation

Design of piezo actuated torsional resonator for fluid viscosity measurement (Conference Presentation)

Suresh Kaluvan, Chen Zhang, Celena Lipscomb, Haifeng Zhang

Proceedings Volume 10595, 105951U (2018) https://doi.org/10.1117/12.2296637

KEYWORDS: Resonators, Actuators, Sensors, Electronics, Numerical simulations, Microsoft Foundation Class Library

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In this paper, a novel torsional resonator is proposed to measure the viscosity of fluids. The proposed measurement system is based on the torsional mode vibration of a metallic cylindrical tube bonded with specially designed twisting-motion-d33-piezo actuators. Two piezoelectric patches are bonded nearer to the fixed end of the cylindrical tube. The one bonded on the upper semicircle of the cylindrical tube is used as a twisting actuator and the other on the bottom semicircle is used as a sensor. The entire system is maintained at its torsional mode resonance frequency by using simple closed loop resonator electronics connected between the two piezo patches. The free end of the resonating cylindrical tube is half immersed into a viscous medium of which the viscosity is intended to be measured in this proposed paper. The torsional resonator experiences an additional viscous drag force-Fd due to the viscosity of the fluid medium which alters its torsional mode resonance frequency (ωT). The value of drag force Fd acting on the torsional resonator will vary depending on the type of viscous fluids in use. The closed loop resonant circuit tracks the change in torsional resonance frequency due to Fd and vibrates the tube with the new resonance frequency whenever the force generated by the viscous fluid changes. The shift in torsional resonant frequency is related to the viscosity of the fluid medium. The analytical model of the vibrating cylindrical tube with viscous fluid is derived and the results are validated with numerical simulation and experimentation. The key enabling concept of this proposed paper is the benefit of torsional mode resonator over the flexural mode resonator i.e., the torsional mode resonator experiences much less viscous damping at its resonance frequency. For the real-time laboratory experimentation, the hollow cylindrical tube with 30cm length and 2.5cm diameter is used. For the actuation and sensing, the MFC M-8528-F1 type (450 fiber orientation) d33 twisting actuator is used. The torsional resonance frequency of the tube in air is 2.5KHz. The proposed fluid viscosity measurement concept is novel and it is found to have better sensitivity and linearity than the flexural mode viscosity measurement system.

Proceedings Article | 19 April 2017 Paper

Measurement of mechanical properties of metallic glass at elevated temperature using sonic resonance method

Suresh Kaluvan, Haifeng Zhang, Sanghita Mridha, Sundeep Mukherjee

Proceedings Volume 10169, 1016926 (2017) https://doi.org/10.1117/12.2260367

KEYWORDS: Glasses, Temperature metrology, Nondestructive evaluation, Solids, Sensors, Metals, Crystals, Corrosion, Resistance, Laser development, Network security, Protactinium, Signal processing, Photography, Amplifiers

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Proceedings Article | 15 April 2016 Paper

Design of an electronic oscillator for resonant pressure sensor with non-collocated sensor and actuator

Akila Ravindran, Uma Gandhi, Suresh Kaluvan, Seung-Bok Choi, Mangalanathan Umapathy

Proceedings Volume 9799, 97990U (2016) https://doi.org/10.1117/12.2218952

KEYWORDS: Sensors, Oscillators, Phase shifts, Actuators, Amplifiers, Resistors, Resonators, Capacitors, Digital electronics, Feedback loops

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Proceedings Article | 15 April 2016 Presentation + Paper

A new resonance based method for the measurement of magnetic field intensity

Suresh Kaluvan, Jinhyuk Park, Haifeng Zhang, Mangalanathan Umapathy, Seung-Bok Choi

Proceedings Volume 9799, 97992V (2016) https://doi.org/10.1117/12.2218480

KEYWORDS: Magnetism, Sensors, Magnetic sensors, Actuators, Resonators, Electronics, Digital electronics, Magnetometers, Metals

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