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New design of a variable impedance based on polarized diodes at microwave frequency
(Institute of Electrical and Electronics Engineers, 2017-05)
In this letter, we present a new variable impedance termination consisting of two polarized diodes. To generate a complex-valued impedance, two controlled current sources polarize the diodes, which are interconnected with ...
Impedance-based structural health monitoring with artificial neural networks
(2000-03-01)
This paper presents a non-model based technique to detect, locate, and characterize structural damage by combining the impedance-based structural health monitoring technique with an artificial neural network. The impedance-based ...
Time-domain analysis of piezoelectric impedance-based structural health monitoring using multilevel wavelet decomposition
(Academic Press Ltd Elsevier B.V. Ltd, 2011-07-01)
A new approach to analyze the response from a piezoelectric wafer in an impedance-based structural health monitoring (SHM) method is proposed. It is shown that the time-domain response of a piezoceramic wafer provides ...
Effect of tensile stress on the field response of impedance in low magnetostriction amorphous wires
(Elsevier Science BvAmsterdamHolanda, 1997)
A New Impedance Measurement System for PZT-Based Structural Health Monitoring
(Institute of Electrical and Electronics Engineers (IEEE), 2009-10-01)
Recent research has shown that electromechanical (E/M) impedance-based techniques are an efficient strategy for damage sensing in the context of structural health monitoring (SHM). The basic principle is to excite the lead ...
EIS characterisation of Ti anodic oxide porous films formed using modulated potential
(Elsevier Science SaLausanneSuíça, 2007)
Time-domain analysis of piezoelectric impedance-based structural health monitoring using multilevel wavelet decomposition
(Academic Press Ltd Elsevier B.V. Ltd, 2014)
Fractal approach to ac impedance spectroscopy studies of ceramic materials
(2001-11-01)
A novel fractal model for grain boundary regions of ceramic materials was developed. The model considers laterally inhomogeneous distribution of charge carriers in the vicinity of grain boundaries as the main cause of the ...
Versatile and easy-to-assemble measurement system for impedance-based structural health monitoring
(2011-12-01)
In this paper we present a versatile and easy-to-assemble measurement system for structural health monitoring (SHM) based on the electromechanical impedance (EMI) technique. The hardware of the proposed system consists ...