An isoperimetric inequality for the torsional rigidity of imperfectly bonded, fiber reinforced cylinders is found. The fiber cross sections can be simply or multiply connected. The imperfect bonding conditions are given in terms of a flexible interface model. Mathematics Subject Classifications (1991): 35J20, 73C02, 73K20.

The behavior of a piezoelectric sensor is strongly affected by the bonding condition along the interface between the sensor and the host structure. This article presents an analytical study of the effect of the mechanical and geometrical properties of the adhesive layer on the coupled dynamic electromechanical behavior of a thin piezoceramic sensor bonded to an elastic medium. A sensor model wi...

A nanoscale representative volume element has been developed to investigate the effect of interphase geometry and property on the mechanical behavior of silica/epoxy resin nanocomposites. The role of interphase–matrix bonding was also examined. Results suggested that interphase modulus and interfacial bonding conditions had significant influence on the effective stiffness of nanocomposites, whi...

The behaviour of a piezoelectric actuator is strongly affected by the bonding condition along the interface between the actuator and the host structure. The current paper represents an analytical study of the static effect of the mechanical and geometrical properties of the adhesive layer on the coupled electromechanical behaviour of a thin piezoceramic actuator bonded to an elastic medium. An ...

The performance of smart structures depends on the electromechanical behaviour of piezoelectric actuators and the bonding condition along the interface, which connects the actuators and the host structures. This paper provides a theoretical study of the effect of partially debonded adhesive layers on the coupled electromechanical behaviour of piezoelectric actuators subjected to high-frequency ...

The behaviour of a piezoelectric sensor is strongly affected by the bonding condition along the interface between the sensor and the host structure. The current paper represents an analytical study of the static effect of the mechanical and geometrical properties of the adhesive layer on the coupled electromechanical behaviour of a thin piezoceramic sensor bonded to an elastic medium. A sensor ...

osteogenesis imperfecta is a rare inherited connective tissue disorder with an expression that varies from mild to severe disease affecting bone, sclera and middle ear. fertility is preserved, especially in those patients with type 1. we present hereby a pregnant woman with osteogenesis imperfecta that had over 30 fractures in long bones and vertebrae. the object of this report was to determine...

We study the scattering of a long longitudinal radiating bulk strain solitary wave in the delaminated area of a two-layered elastic structure with soft ("imperfect") bonding between the layers within the scope of the coupled Boussinesq equations. The direct numerical modelling of this and similar problems is challenging and has natural limitations. We develop a semi-analytical approach, based o...