Mr. Chen Zhang Profile

Chen Zhang

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 29 March 2019 Presentation

Langasite-based BAW resonator coated with ZnO for high temperature CO2 gas sensing with temperature compensation (Conference Presentation)

Chen Zhang, Abhishek Ghosh, Haifeng Zhang

Proceedings Volume 10970, 109702B (2019) https://doi.org/10.1117/12.2517034

KEYWORDS: Carbon dioxide, Resonators, Zinc oxide, Sensors, Gas sensors, Crystals, Adsorption, Molecules, Acoustics, Thin films

Read Abstract +

Proceedings Article | 27 March 2019 Presentation + Paper

CO2 sensing characteristics of SAW sensor operated at high temperature

Abhishek Ghosh, Chen Zhang, Haifeng Zhang

Proceedings Volume 10970, 109702A (2019) https://doi.org/10.1117/12.2517006

KEYWORDS: Carbon dioxide, Sensors, Thin films, Adsorption, Calcium, Gas sensors, Resonators, Zinc oxide, Zinc, Temperature metrology

Read Abstract +

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

Read Abstract +

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 | 27 March 2018 Presentation

Comparison of CO2 gas sensing between Langasite resonator and QCM (Conference Presentation)

Chen Zhang, Haifeng Zhang

Proceedings Volume 10598, 1059819 (2018) https://doi.org/10.1117/12.2296680

KEYWORDS: Carbon dioxide, Resonators, Sensors, Crystals, Electrodes, Quartz, Gold, Platinum, Environmental sensing, Pollution control

Read Abstract +

Proceedings Article | 19 April 2017 Presentation + Paper

Performance enhanced piezoelectric-based crack detection system for high temperature I-beam SHM

Chen Zhang, Haifeng Zhang

Proceedings Volume 10169, 101691Y (2017) https://doi.org/10.1117/12.2259814

KEYWORDS: Sensing systems, Signal detection, Structural health monitoring, Sensors, Structural engineering, Safety, Piezoelectric effects, Actuators, Phase shifts, Buildings, Transducers, Digital signal processing, Environmental sensing, Wave propagation, Composites

Read Abstract +

Proceedings Article | 1 April 2016 Paper

Piezoelectric-based smart sensing system for I-beam structural health monitoring

Chen Zhang, Haifeng Zhang, Tzuyang Yu, Xingwei Wang

Proceedings Volume 9805, 98052C (2016) https://doi.org/10.1117/12.2218551

KEYWORDS: Sensors, Sensing systems, Structural health monitoring, Ferroelectric materials, Civil engineering, Safety, Signal attenuation, Transducers, Actuators, In situ remote sensing, Signal detection, Nondestructive evaluation, Wave propagation

Read Abstract +

Showing 5 of 6 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years