Metal core piezoelectric ceramic fiber rosettes for acousto-ultrasonic source localization in plate structures

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part II

Article type: Research Article

Authors: Liu, Jian^a | Qiu, Jinhao^{a; *} | Chang, Weijie^a | Ji, Hongli^a | Zhu, Kongjun^a

Affiliations: [a] The Aeronautic Key Laboratory for Smart Materials and Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Yudao Street 29, Nanjing, China

Correspondence: [*] Corresponding author. Tel.: +86 25 84891123; Fax: +86 25 84891123; E-mail: qiu@nuaa.edu.cn

Abstract: This paper presents an approach for acousto-ultrasonic source (passive damage or impact) localization based on metal core piezoelectric fiber (MPF) rosettes. MPF is a new type piezoelectric ceramic device with small size and has high directivity to sense Lamb waves. The response of surface-bonded MPF sensors to Lamb-wave fields is explored theoretically and experimentally. The good directional properties of MPF are used to determine the direction of propagation of the acoustic waves by mounting three MPF sensors in a rosette configuration. Two suitably spaced rosettes are used to locate the source of the ultrasound by taking the intersection of the direction given by each rosette. The performance of the rosettes for source location is validated on an aluminum plate.

Keywords: Metal core piezoelectric fiber (MPF), Damage location, Lamb waves, Structural health monitoring

DOI: 10.3233/JAE-2010-1196

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 3-4, pp. 865-873, 2010