Arnaud Deraemaeker

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Still today, some of the phenomena which occur in structural dynamics cannot be described, even using a properly updated model: some uncertainties remain. This paper presents the basic concepts of a new theory which uses the concept of Lack of Knowledge (LOK) to model the uncertainty using two bounds of the energy in each substructure. The inverse problem,(More)
In order to bring the research results on intelligent materials to the level of industrial use in real applications, the related design processes have to become part of the complete product creation process. This requires that the product functional performance simulation models, which are the cornerstone of today’s design process, must be capable of(More)
When a voltage is applied across the electrodes of a flat piezoelectric transducer attached to a thin plate structure, the transducer acts as equivalent loads applied to the host plate structure. In this paper, analytical expressions of these equivalent loads are derived for the general case of an orthotropic piezoelectric actuator using Hamilton's(More)
Early age cracking of structures often leads to aesthetic problems and service life reduction. Among the parameters involved in the stress build-up that causes this cracking process, the stiffness evolution is of major importance for models and numerical computations. This paper reports the use of six different techniques aimed for stiffness evolution(More)
In the last decades, the field of structural health monitoring and damage detection has been intensively explored. Active vibration techniques allow to excite structures at high frequency vibrations which are sensitive to small damage. Piezoelectric PZT transducers are perfect candidates for such testing due to their small size, low cost and large(More)
In the last decades the field of structural health monitoring and damage detection has been intensively explored. Active vibration technique allows to excite the structure at high frequency vibrations which are sensitive to small damage. Ideal candidates for the generation of high frequency (ultrasonic) signals are piezoelectric PZT transducers, due to(More)
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