In this article, an approach based on an array of macro-fiber composite (MFC) transducers arranged as rosettes is proposed for high-velocity impact location on isotropic and composite aircraft panels. Each rosette, using the directivity behavior of three MFC sensors, provides the direction of an incoming wave generated by the impact source as a principal strain angle. A minimum of two rosettes is sufficient to determine the impact location by intersecting the wave directions. The piezoelectric rosette approach is easier to implement than the well-known time-of-flight-based triangulation of acoustic emissions because it does not require knowledge of the wave speed in the material. Hence, the technique does not have the drawbacks of time-of-flight triangulation associated to anisotropic materials or tapered sections. The experiments reported herein show the applicability of the technique to high-velocity impacts created with a gas-gun firing spherical ice projectiles.
High-velocity Impact Location on Aircraft Panels Using Macro-fiber Composite Piezoelectric Rosettes
Creators
Salvatore Salamone - University of California, San Diego
Ivan Bartoli - University of California, San Diego
Patrizia di Leo - University of Palermo
Francesco Lanza di Scalea - Univ Calif San Diego, NDE, La Jolla, CA 92093 USA
Augusto Ajovalasit - University of Palermo
Leonardo D'Acquisto - University of Palermo
Jennifer Rhymer - University of California, San Diego
Hyonny Kim - University of California, San Diego
Publication Details
Journal of intelligent material systems and structures, v 21(9), pp 887-896
Publisher
Sage
Number of pages
10
Grant note
FA9550-09-C-0158 / US Air Force Office of Scientific Research; United States Department of Defense; Air Force Office of Scientific Research (AFOSR)
University of California San Diego School of Engineering and the University of Palermo, Italy, School of Engineering
Resource Type
Journal article
Language
English
Academic Unit
Civil, Architectural, and Environmental Engineering
Web of Science ID
WOS:000278183500002
Scopus ID
2-s2.0-77952983228
Other Identifier
991020547453304721
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Collaboration types
Domestic collaboration
International collaboration
Web of Science research areas
Materials Science, Multidisciplinary
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