A5102747332- Fatigue and fracture mechanics
- Sensor Technology and Measurement Systems
- Material Properties and Processing
- Metal Forming Simulation Techniques
- Advanced Welding Techniques Analysis
- Injection Molding Process and Properties
- Industrial Vision Systems and Defect Detection
- Mechanical Behavior of Composites
- Manufacturing Process and Optimization
- High-Velocity Impact and Material Behavior
- Geological and Geophysical Studies Worldwide
- Ultrasonics and Acoustic Wave Propagation
- Aluminum Alloy Microstructure Properties
- Rural Development and Agriculture
- Industrial Automation and Control Systems
Instituto Politécnico de Leiria
2019-2020
University of Coimbra
2014-2019
Centro de Estudos em Geografia e Ordenamento do Territorio
2015
San Antonio College
2014
This paper aims at studying the cyclic plastic behaviour of 7075-T651 aluminium alloy under fully-reversed strain-controlled conditions. Tests are conducted strain-control mode, room temperature, in a conventional servo-hydraulic machine, from smooth samples, using single step method, with strain amplitudes (Δε/2) range ±0.5 to ±2.75%. material has exhibited mixed behaviour, i.e. strain-hardens higher (Δε/2/>1.1%) and strain-softens lower (Δε/2<1.1%). A linear relationship between degree...
The present paper proposes a three-dimensional numerical approach able to account for the effect of overloads on fatigue life extension in cracked geometries. procedure starts with analysis overload effects plasticity induced crack closure via elastic-plastic based node release technique. Then, relationships between opening values and growth rates are introduced into models, developed light adaptive remeshing concept, estimate lifetime.
A alveolização granítica assume-se desde Alain Godard (1977) como o resultado de um compromisso morfogenético entre fases alteração química em clima tropical húmido e ablação subtropical seco, com a sua génese encontrar-se associada fatores morfo-estruturais, enquanto diferenciação se deve, no essencial, morfoclimáticos.A similaridade das condições base es truturais nos diferentes sectores do Maciço Hespérico aponta para uma justificação da eficácia meteorização química, quadro diferenças...
Water assisted injection moulding is a recent development in the manufacturing technology associated with moulding. Injection involved high pressure of molten plastic to preformed metal mould which defines exterior shape object. variant an addition step water injected into after its has been filled plastic. The jet sweeps out path leave hollow tube interior part defined by jet. This used for preparing tubular components use automotive industry and domestic appliances. We have developing...