Journal ArticleDOI
Unidimensional modeling of multi-layered piezoelectric transducer structures
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TLDR
A comprehensive, unidimensional modeling approach is described that may be employed to facilitate the analysis and subsequent optimization of laminated transducer assemblies and the ability to accurately predict the response of stacked piezoelectric structures is demonstrated.Abstract:
Multi-layered transducer structures offer the potential of improved performance in terms of increased transmit sensitivity, greater bandwidth, and enhanced reception characteristics. Unfortunately, the successful design of such devices is often difficult, owing to the complex interaction between the active piezoelectric layers and passive intermediate interface layers. Furthermore, in many practical applications, the loading effects imposed by the electrical drive circuitry often limit the performance improvements that may be physically realized. This paper describes the development of a comprehensive, unidimensional modeling approach. This model may be employed to facilitate the analysis and subsequent optimization of laminated transducer assemblies. The devices currently under consideration include both piezoceramic and piezopolymer configurations, as well as alternative piezocomposite designs. The effects of varying bondline thickness and the introduction of passive interface layers are examined, as is the influence of the electrical load circuitry on overall system response. The ability to accurately predict the response of stacked piezoelectric structures is demonstrated through extensive comparison of experimental and theoretical responses. This paper concludes by highlighting the important role that modeling plays in the design, fabrication, and optimization of complex multi-layered transducer assemblies.read more
Citations
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Journal ArticleDOI
Ultrasonic arrays for non-destructive evaluation: A review
TL;DR: The use of ultrasonic arrays for non-destructive evaluation has been extensively studied in the literature as mentioned in this paper, where the main advantages of arrays are their increased flexibility over traditional single element transducers, and their ability to produce immediate images of the test structure.
Journal ArticleDOI
Piezoelectric composites for sensor and actuator applications
TL;DR: Computer-aided design (CAD)-based fabrication methods, which result in composites whose structural complexity surpass that of composites obtained with traditional methods, are described to introduce the reader to novel concepts in processing of piezocomposites.
Journal ArticleDOI
A novel system for fused deposition of advanced multiple ceramics
Mohsen A. Jafari,Wenbiao Han,F. Mohammadi,Ahmad Safari,Stephen C. Danforth,Noshir A. Langrana +5 more
TL;DR: In this paper, the authors present a system for the solid free-form fabrication of multiple ceramic actuators and sensors, where a part is built layer by layer, with each layer composed of roads of material forming the boundary and the interior of the layer.
Journal ArticleDOI
An approach to design a high power piezoelectric ultrasonic transducer
TL;DR: In this article, an attempt has been made to analyze the stress produced along the oscillating PZT employed ultrasonic head by applying the principles of acoustic wave propagation, based on such analysis, general principles of PZTs transducers design, excited by a DC-biased alternating electrical source, has been derived and finally a typical such transducer has been designed, manufactured and tested.
Journal ArticleDOI
Guided wave propagation in multilayered piezoelectric structures
TL;DR: In this paper, a general formulation of the reverberation-ray matrix (MRRM) based on the state space formalism and plane wave expansion technique is presented for the analysis of guided waves in multilayered piezoelectric structures.
References
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Journal ArticleDOI
Connectivity and piezoelectric-pyroelectric composites
TL;DR: In this article, a series and parallel model for composite piezoelectric and pyroelectrics is presented, which leads to several interesting results, such as a diphasic pyroelectric in which neither phase is pyrocharged.
Journal ArticleDOI
Transient Performance of a Piezoelectric Transducer
TL;DR: In this paper, transform calculus is used to solve several problems in which the transient response of a piezoelectric transducer is of interest, including the electrical signal produced by a step function of force, both for open-circuit and resistive loading at the electrical terminals.
Journal ArticleDOI
Flexible ultrasonic transducer arrays for nondestructive evaluation applications. I. The theoretical modeling approach
D.J. Powell,Gordon Hayward +1 more
TL;DR: In this article, a theoretical modeling approach for flexible ultrasonic transducer arrays is developed and where necessary, the validity confirmed by experimental measurement is confirmed by a set of design tools that will permit the analysis of different material configurations and various transmit-receive aperture designs.
Book ChapterDOI
A Matrix Technique for Analyzing the Performance of Multilayered Front Matched and Backed Piezoelectric Ceramic Transducers
TL;DR: In this paper, a matrix formularization has been developed which simplifies the frequency analysis of multiple front matched and backed piezoelectric ceramics and avoids the problem of indeterminancy at certain frequencies.