Conference proceeding
Validation of the Piezoelectric Rosette Technique for Locating Impacts in Complex Aerospace Panels
HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2011, v 7984(1), pp 79841E-79841E-11
01 Jan 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
In this paper 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. The experimental testing involved the following six specimens: an aluminum panel, a quasi-isotropic CFRP composite panel, a highly anisotropic CFRP composite panel, a stiffened aluminum panel, a stiffened quasi-isotropic CFRP composite panel, and a stiffened anisotropic CFRP composite panel
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Details
- Title
- Validation of the Piezoelectric Rosette Technique for Locating Impacts in Complex Aerospace Panels
- Creators
- Salvatore Salamone - University at Buffalo, State University of New YorkIvan BartoliJennifer Rhymer - Univ Calif Berkeley, NDE & Struct Hlth Monitoring Lab, Dept Struct Engn, Berkeley, CA 94720 USAFrancesco Lanza di Scalea - Univ Calif Berkeley, NDE & Struct Hlth Monitoring Lab, Dept Struct Engn, Berkeley, CA 94720 USAHyonny Kim - Univ Calif Berkeley, NDE & Struct Hlth Monitoring Lab, Dept Struct Engn, Berkeley, CA 94720 USA
- Contributors
- T Kundu (Editor)
- Publication Details
- HEALTH MONITORING OF STRUCTURAL AND BIOLOGICAL SYSTEMS 2011, v 7984(1), pp 79841E-79841E-11
- Series
- Proceedings of SPIE
- Publisher
- Spie-Int Soc Optical Engineering
- Number of pages
- 11
- 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)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Civil, Architectural, and Environmental Engineering
- Web of Science ID
- WOS:000294550700041
- Scopus ID
- 2-s2.0-79956217744
- Other Identifier
- 991020547443904721
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InCites Highlights
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Multidisciplinary
- Optics