Structural health monitoring of glass/epoxy composite plates with MEMS PMN-PT sensors

Brenton R. Simon; Hong-Yue Tang; David A. Horsley; Valeria La Saponara; Wahyu Lestari

doi:10.1117/12.815649

30 March 2009 Structural health monitoring of glass/epoxy composite plates with MEMS PMN-PT sensors

Brenton R. Simon, Hong-Yue Tang, David A. Horsley, Valeria La Saponara, Wahyu Lestari

Proceedings Volume 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009; 72923B (2009) https://doi.org/10.1117/12.815649
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2009, San Diego, California, United States

Abstract

Sensors constructed with single-crystal PMN-PT, i.e. Pb(Mg_1/3Nb_2/3)O3-PbTiO₃ or PMN, are developed in this paper for structural health monitoring of composite plates. To determine the potential of PMN-PT for this application, glass/epoxy composite specimens were created containing an embedded delamination-starter. Two different piezoelectric materials were bonded to the surface of each specimen: PMN-PT, the test material, was placed on one side of the specimen, while a traditional material, PZT-4, was placed on the other. A comparison of the ability of both materials to transmit and receive an ultrasonic pulse was conducted, with the received signal detected by both a second surface-bonded transducer constructed of the same material, as well as a laser Doppler vibrometer (LDV) analyzing the same location. The optimal frequency range of both sets of transducers is discussed and a comparison is presented of the experimental results to theory. The specimens will be fatigued until failure with further data collected every 3,000 cycles to characterize the ability of each material to detect the growing delamination in the composite structure. This additional information will be made available during the conference.

Citation Download Citation

Brenton R. Simon, Hong-Yue Tang, David A. Horsley, Valeria La Saponara, and Wahyu Lestari "Structural health monitoring of glass/epoxy composite plates with MEMS PMN-PT sensors", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72923B (30 March 2009); https://doi.org/10.1117/12.815649

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