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Influence of tool shoulder geometry on properties of friction stir welds in thi...

The aim of this work is to study the influence of the shoulder geometry on friction stir welding of 1 mm-thick copper-DHP plates. The welds were produced using three different shoulder geometries, flat, conical and scrolled, and varying the rotation and traverse speeds of the tool. The flat shoulder tool proved to be inadequate for performing welds, because many defects were produced for all welding conditions....

Estudo da Escala de Depressão, Ansiedade e Stresse para Crianças (EADS-C)

Optimismo em crianças e adolescentes: adaptação e validação do LOT-R = Optimism...

Promoção de qualidade de vida em crianças e adolescentes

Modeling and numerical study of actuator and sensor effects for a laminated pie...

The aim of this paper is to derive a reduced model for a piezoelectric plate and to study its actuator and sensor capabilities. In the first part, we focus on the asymptotic modeling for thin plates formed by stacking layers of different piezoelectric materials. In the asymptotic model, the mechanical and electric unknowns are shown to be partly decoupled. In the second part, we study the actuator and sensor ca...

Smart capabilities of a laminated piezoelectric plate model

This paper focuses on the modelling and analysis of actuator and sensor effects for thin laminated plates, which are formed by stacking several layers of different piezoelectric materials. We first discuss features and properties of a two-dimensional asymptotic model for a piezoelectric anisotropic plate, whose unknowns are the Kirchhoff-Love displacement and the electric potential. We prove that the latter is ...

Contribuição para o estudo da adaptação portuguesa das escalas de ansiedade, de...

A personalidade da mãe prematura

Validação preliminar de uma técnica de avaliação de feminimo/materno

Comparação da qualidade de vida de mulheres submetidas a histerectomia e mulher...