A5072401757- Mechanical Behavior of Composites
- Structural Behavior of Reinforced Concrete
- Structural Load-Bearing Analysis
- Fatigue and fracture mechanics
- Structural Analysis of Composite Materials
- Cellular and Composite Structures
- Composite Structure Analysis and Optimization
- Laser Material Processing Techniques
- Structural Integrity and Reliability Analysis
- Metal Forming Simulation Techniques
- Material Properties and Applications
- Advanced Surface Polishing Techniques
- Ultrasonics and Acoustic Wave Propagation
- Advanced machining processes and optimization
- Ocular and Laser Science Research
- Optical measurement and interference techniques
- Concrete Corrosion and Durability
- Diamond and Carbon-based Materials Research
- Electronic Packaging and Soldering Technologies
- Fiber-reinforced polymer composites
- Economic and Industrial Development
- Innovative concrete reinforcement materials
- Civil and Structural Engineering Research
- Polymer Science and Applications
- Structural mechanics and materials
Institute of Mechanical Engineering and Industrial Mangement
2015-2024
Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial
2015-2024
Polytechnic Institute of Porto
2015-2024
Universidade do Porto
2018-2024
Sinop University
2023
ORCID
2023
Instituto Superior de Engenharia do Porto
2021
Adhesively-bonded joints are widely used to join structural components. The most common joint types single-lap (SLJ), double-lap (DLJ), stepped-lap and scarf joints. Several factors influence the behaviour strength of an adhesive joint, namely type (brittle or ductile, strong weak) geometry. One important parameters that affects is overlap length (LO). A comparative study involves several geometries uses adhesives with different characteristics was carried out check which suitable for a...
Nowadays, adhesively bonded joints constitute an emergent area, being applied in several industries, especially the aviation sector. Research has been developed on analysis of mechanical behaviour joints, while establishing fracture characterisation pure modes I and II, mixed-mode + II. Despite significant developments analysing under quasi-static fatigue conditions, few studies have addressed other phenomena such as creep. On creep analysis, presented damage modelling metallic materials,...
In this work, quasi-static and fatigue analyses of the three most common adhesive repair geometries were performed considering composite patches aluminium as parent material. Experimental three-point bending tests accomplished on single-strap, double-strap scarf repairs in order to obtain load-displacement curves for analysis, compliance versus number cycles studies. The main goals are identify static strength lives each type repair. addition, progressive damage that rely two cohesive zone...
This work addresses a simple methodology to perform fatigue/fracture characterisation under mixed-mode I+II of composite bonded joints. The asymmetrical double cantilever beam and single-leg bending tests were considered address mode-mixities with predominance mode I II, respectively. modified Paris laws coefficients correlated the ones other defining suitable relations describing evolution these as function mode-mixity. These functions input in cohesive zone model appropriate for high-cycle...
The fatigue/fracture behaviour of bi-material Aluminium/CFRP (Carbon-Fibre Reinforced Polymer) bonded joints was addressed in this work using the modified Paris law. Five types tests were employed to cover appropriately entire mode I – II range. Data reduction schemes based on equivalent crack length concept developed for all tests. Following methodology, compliance versus number cycles relation becomes sufficient perform post-processing fatigue data analysis. coefficients law each type test...
In this work, the fracture behaviour of repaired honeycomb/carbon-epoxy sandwich panels under edgewise compression and three-point bending loading was analysed. Assuming occurrence damage resulting from a complete perforation leading to an open hole, followed repair strategy consists plug filling core hole considering two scarf patches with angle 10° in order damaged skins. Experimental tests were performed on undamaged situations address alteration failure modes assess efficiency. It...
The recent enhancements in structural adhesives technology enabled the use of adhesive joints and repairs several industrial fields. scarf repair is most efficient because suppression peel (σ) shear (τ) peak stresses, arising from tapered adherend edges. structures that have requirement flush surfaces one major applications geometry. This work a numerical study on ultimate tensile strength two-dimensional (2D) aluminum with external doublers as reinforcements. Two were considered: brittle...
The present work intends to describe all procedures developed in order predict the fatigue/fracture behaviour of single-strap repairs carbon-epoxy composites. main goal is validate a mixed-mode I + II cohesive zone model for high-cycle fatigue based on modified Paris law. A preliminary static fracture characterisation mode I, and necessary achieve energetic criterion describing bonded joint. Subsequently, same tests were carried out under loading determine evolution law parameters as...