RESPONSE OF METAL CORE PIEZOELECTRIC FIBERS TO UNSTEADY AIRFLOWS

Autor:	M. J. Park, Hong Li Ji, Kongjun Zhu, Jin Hao Qiu
Rok vydání:	2010
Předmět:	Aerodynamic force Core (optical fiber) Acceleration Materials science Shutter Airflow Statistical and Nonlinear Physics Fiber Composite material Condensed Matter Physics Piezoelectricity Wind tunnel
Zdroj:	Modern Physics Letters B. 24:1453-1456
ISSN:	1793-6640 0217-9849
DOI:	10.1142/s0217984910023852
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6e9aa26ec8fa3850f79380ae646cfcb8 https://doi.org/10.1142/s0217984910023852 Zobrazit plný text záznamu