The laminated construction of composite offers the possibility of permanently embedding sensors into structure,
for example, ultrasonic transducers which can be used for NDE applications. An attractive and simple solution
for probing embedded sensors wirelessly is via inductive coupling. However, before this can be achieved it is
necessary to have a full understanding and proper design strategy for the inductively coupled system. This
paper presents the developments of both system design procedure and a computer program for one dimensional
inductively coupled transducer system mounted on a solid substrate. The design strategy in this paper mainly
focuses on issues of localization of transducers, and optimizing the signal to noise level. Starting from a three
coil equivalent circuit, this paper also explains how the measured impedance of a bonded piezoelectric disc
is implemented into the system model representing a transducer bonded to an arbitrary solid substrate. The
computer programme using this model provides immediate predictions of electrical input impedance, acoustic
response and pulse-echo response. A series of experiments and calculations have been performed in order to
validate the model. This has enabled the degree of accuracy required for various parameters within the model,
such as mutual inductance between the coils and self-inductance of coils, to be assessed. Once validated, the
model can be used as a tool to predict the effect of physical parameters, such as distance, lateral misalignment
between the coils, and the coil geometry on the performance of an inductively coupled system.
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