SPECIAL ISSUE: Proceedings of the Third International Symposium on Physics of Fluids (ISPF3), 15–18 June, 2009, Jiuzhaigou, China — Applications of Fluid MechanicsNo Access

RESPONSE OF METAL CORE PIEZOELECTRIC FIBERS TO UNSTEADY AIRFLOWS

J. H. QIU

The Aeronautical Key Laboratory for Smart Materials & Structures, College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, P.R. China

Search for more papers by this author

H. L. JI

The Aeronautical Key Laboratory for Smart Materials & Structures, College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, P.R. China

Search for more papers by this author

K. J. ZHU

The Aeronautical Key Laboratory for Smart Materials & Structures, College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, P.R. China

Search for more papers by this author

, and

M. J. PARK

Institute of Fluid Science, Tohoku University, Sendai 210016, Japan

Search for more papers by this author

https://doi.org/10.1142/S0217984910023852Cited by:14 (Source: Crossref)

Abstract

In the previous study, possible applications of metal core piezoelectric fibers with a diameter of 200 to 250 µm as bionic airflow sensors mimicking the flow sensitive receptor hairs of crickets have been proposed. This study aims to investigate the dynamic responses of the metal core piezoelectric fibers to unsteady airflow. The metal core piezoelectric fiber is half coated on the outer surface and is used in the bending mode. Wind tunnel tests were carried out and the output voltage of the fiber under the excitation of the unsteady aerodynamic force during flow acceleration and deceleration was measured when the wind tunnel was suddenly closed or opened by a shutter. The relationship between the maximum voltage and the steady-state velocity and that between the voltage and the acceleration of flow were also obtained.

Keywords:

References

J. Qiuet al., Proc. of SPIE's 10th Int. Symposium on Smart Structures and Materials p. 475. Google Scholar
G. Sebald, J. H. Qiu and D. Guyomar, Journal of Physics D: Applied Physics 38, 3733 (2005), DOI: 10.1088/0022-3727/38/19/023. Crossref, Web of Science, ADS, Google Scholar
Y. X. Bianet al., Int. Journal of Applied Electromagnetics and Mechanics 29, 47 (2009). Crossref, Web of Science, Google Scholar
J. Qiuet al., J. Japan Soc. Applied Electromagnetics 12, 299 (2004). Web of Science, Google Scholar
T. Shimokawa, T. Kumagai and Y. Baba, J. Comparitive Physiol. A 183, 171 (1998). Crossref, Web of Science, Google Scholar
E. T. Whittaker and G. Robinson, The Calculus of Observations: A Treatise on Numerical Mathematics, 4th edn. (Dover, New York, 1967) p. 285. Google Scholar