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Sergey Alekseev, Natalia Polzikova and Valery Luzanov
The hybrid high overtone bulk acoustic wave resonators (HBARs) consisting of a piezoelectric film transducers and gallium gadolinium garnet substrates with yttrium iron garnet films (YIG-GGG-YIG) are used for experimental excitation and detection of acou...
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Michaël Lematre and Marc Lethiecq
This paper presents the possibility of enhancement of the generation and detection of poorly energetic acoustic-guided waves in multilayered structures using a new design for a V(z) transducer. By defining a modified V(z) transducer composed of segmented...
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Alex Mezheritsky
A novel effective vibrational mode was discovered in the conventional transducer with an array of orthogonal (square) regular piezoelectric rods in 1-3 piezocomposite, containing the damping backing and front matching layers. The operational resonance in...
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Jorge de-J. Lozoya-Santos, L. C. Félix-Herrán, Juan C. Tudón-Martínez, Adriana Vargas-Martinez and Ricardo A. Ramirez-Mendoza
This work designed and implemented a new low-cost, Internet of Things-oriented, wireless smart sensor prototype to measure mechanical strain. The research effort explores the use of smart materials as transducers, e.g., a magnetorheological elastomer as ...
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Gift Nyikayaramba and Boris Murmann
In this work, an approach for enabling miniaturized, low-voltage hardware for active structural health monitoring (SHM) based on ultrasonic guided waves is investigated. The proposed technique relies on S-parameter measurements instead of time-domain pul...
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M. Saqib Hameed, Zheng Li and Kaihong Zheng
A damage estimation method based on continuous wavelet transformation (CWT) of the normalized Lamb wave signals is proposed here. Lamb waves are actuated and sensed using piezoelectric (lead zirconate titanate, PZT) transducers arranged in the form of sq...
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Christopher Bosyj, Neelesh Bhadwal, Thomas Coyle and Anthony Sinclair
Long-term installation of ultrasonic transducers in high temperature environments allows for continuous monitoring of critical components and processes without the need to halt industrial operations. Transducer designs based on the high-Curie-point piezo...
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Marilyne Philibert, Constantinos Soutis, Matthieu Gresil and Kui Yao
Low velocity impact induces barely visible damage in the form of matrix cracking or delamination that can grow under hydro-thermo-mechanical loading and possibly lead to catastrophic failure if not detected at an early stage. A network of piezoelectric t...
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Vittorio Memmolo, Natalino D. Boffa, Leandro Maio, Ernesto Monaco and Fabrizio Ricci
Aerospace vehicles are demanded to withstand harsh conditions with a low weight impact. Composites have been increasingly adopted to meet such performances but they are affected by sudden and barely visible failures when subjected to low velocity impacts...
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A. Habib, A. Shelke, U. Amjad, U. Pietsch and S. Banerjee
In this paper, a novel method to quantify the incubation of damage on piezoelectric crystal is presented. An intrinsic length scale parameter obtained from nonlocal field theory is used as a novel measure for quantification of damage precursor. Features ...
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