Development of an impedance-based wireless sensor node for structural health monitoring

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Wireless sensor network for structural health monitoring: A contemporary review of technologies, challenges, and future direction (2019, methodology): “To utilize the impedance method for SHM, Mascarenas et al.50 developed wireless impedance sensor node provided with a microcontroller that performed on-board processing, a low-cost integrated circuit chip that could measure and record a piezoelectric transducer electrical impedance, and a wireless t”
Electromechanical impedance of piezoelectric transducers for monitoring metallic and non-metallic structures: A review of wired, wireless and energy-harvesting methods (2013, background): “Mascarenas et al. (2007) developed a portable miniaturized device, which is a low-cost impedance measurement chip and its effectiveness has been demonstrated in detecting preload changes in a bolted frame structure (Mascarenas, 2006).”
A Review of the Piezoelectric Electromechanical Impedance Based Structural Health Monitoring Technique for Engineering Structures (2018, background): “Thus far, various authors have researched wireless systems [25,26] with the AD5933 impedance measurement chip manufactured by Analog Devices, Inc.”