
Albertino ArteiroUniversity of Porto | UP · Departamento de Engenharia Mecânica
Albertino Arteiro
Doctor of Engineering
About
97
Publications
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Introduction
Albertino Arteiro is Assistant Professor at the Materials and Technological Processes Group of the Department of Mechanical Engineering of the Faculty of Engineering – University of Porto since 2019, and a member of the ECCOMAS Young Investigators Committee. His research interests include material modelling at different length-scales, design and analysis of composite systems based on new concepts, and composites manufacturing.
Additional affiliations
Education
January 2013 - May 2016
September 2007 - July 2012
Publications
Publications (97)
A micro-mechanical model is used to study the effect of ply thickness on constrained 90° plies subjected to transverse compressive loading (in situ effect). For cross-ply sublaminates with conventional, standard-thickness 90° plies, failure is dominated by fibre-matrix interface cracking and large localised plastic deformation of the matrix, formin...
A micro-mechanical finite element model of a composite sublaminate is proposed to study the mechanical response of ultra-thin plies, consisting of a representative volume element of a 90° thin lamina in-between two homogenised ±θ° plies. Random fibre distributions, materially and statistically equivalent to real distributions, are analysed. A three...
The residual strength of thin-ply non-crimp fabric laminates with large through-the-thickness cracks is investigated in this paper. Analysis methods such as the linear elastic fracture mechanics, inherent flaw, point-stress, average-stress and Finite Fracture Mechanics are used to predict large damage capability. Experiments show that thin-ply non-...
This paper presents an experimental investigation of the mechanical response of a new class of advanced composite materials manufactured using thin non-crimp fabrics. Tensile and compressive tests in both unnotched and notched specimens were performed using two different lay-ups. The notched tests were based on specimens with central cracks and wit...
Linerless composite pressure vessels, or type V pressure vessels, are gaining increased interest in the transportation industry because they offer improved storage volume and dry weight, especially for low-pressure cryogenic storage. Nevertheless, the design and manufacturing of this type of pressure vessel bring several challenges due to the inher...
(Identifier: http://hdl.handle.net/10256/25101)
Fibre reinforced polymers, and in particular laminated plates, are widely used in structural applications. Interlaminar fracture (delamination) is a critical damage mechanism for these materials. Interlaminar fracture toughness is characterised using unidirectional specimens. While the toughness at in...
This paper presents a mesoscale damage model for composite materials and its validation at the coupon level by predicting scaling effects in un-notched carbon-fiber reinforced polymer (CFRP) laminates. The proposed material model presents a revised longitudinal damage law that accounts for the effect of complex 3D stress states in the prediction of...
The deadline for proposals submission is on the 15th of November, 2022. To submit your proposal, please fill the form available in conference website, where you must provide the title of the minisymposium, a brief description, and information about the organizer (and co-organizers, if applicable).
19 – 21 June 2023 / yic2023.fe.up.pt / yic2023@fe....
The submission of extended abstracts is now open and authors will be able to submit their contributions until the 15th of January 2023.
This study investigates the use of an intrinsic size effect methodology for fracture toughness characterisation, beneficial in cases where geometrical specimen scaling is severely limited. The analytical formulation of the intrinsic method is validated both experimentally and numerically for intralaminar characterisation. Employing a woven carbon f...
Scarf repairs are regarded as a highly effective repairing method to recover most of the load-carrying capabilities in primary aircraft structures. In this article, an Improved Semi-analytical Method (ISM) is proposed as a quick design tool for the strength prediction and the optimization of composite scarf repair structures made from fabric or uni...
Application of advanced composite materials to aircraft primary structures is continuously growing, and projects like Airbus A350XWB in the field of commercial aircrafts or Airbus H160 in the field of civil rotorcrafts are new references of how far composite technology can be implemented. During the last decades, considerable research efforts in th...
Composite materials are increasingly used to help in reducing the carbon footprint of transportation and upscaling renewable energy infrastructure that provides clean energy for future cities. However, the inherent susceptibility of carbon fibre reinforced polymers to impact damage results in knock-down in design and is linked to the micro-mechanis...
Designing an airframe is a complex process as it requires knowledge from multiple disciplines such as aerodynamics, structural mechanics, manufacturing, flight dynamics, which individually lead to very different optimal designs. Furthermore, the growing use of Carbon Fibre Reinforced Plastics (CFRP), while allowing for more design freedom, has at t...
This paper presents the development and validation of a mesoscale numerical model to predict the bearing failure of composite laminates reinforced by unidirectional continuous fibers, focusing on specimens that show a significant non-linear response prior to failure. Half-hole pin bearing tests were carried out with multiple instrumentation for the...
The manufacturing process in thermoset-based carbon fiber-reinforced polymers (CFRPs) usually requires a curing stage where the material is transformed from a gel state to a monolithic solid state. During the curing process, micro-residual stresses are developed in the material due to the different chemical-thermal-mechanical properties of the fibe...
This paper presents the extension and validation of omni-failure envelopes for first-ply failure (FPF) and last-ply failure (LPF) analysis of advanced composite materials under general three-dimensional (3D) stress states. Phenomenological failure criteria based on invariant structural tensors are implemented to address failure events in multidirec...
An invariant-based constitutive model for unidirectional composites, including viscous effects in the elastic and plastic regimes at finite strains, is proposed. The model is based on the multiplicative decomposition of the deformation gradient, using an isoclinic configuration to avoid the non-uniqueness of intermediate configurations. The visco-e...
This work represents the first step towards the application of machine learning techniques in the prediction of statistical design allowables of composite laminates. Building on data generated analytically, four machine algorithms (XGBoost, Random Forests, Gaussian Processes and Artificial Neural Networks) are used to predict the notched strength o...
Structural power composites stand out as a possible solution to the demands of the modern transportation system of more efficient and eco-friendly vehicles. Recent studies demonstrated the possibility to realize these components endowing high-performance composites with electrochemical properties. The aim of this paper is to present a systematic re...
A meso-scale damage modelling framework for composite laminates is assessed against multiaxial experimental data obtained from specimens subjected to combined tension/compression and shear loading using a modified Arcan fixture (MAF). Two laminates made from unidirectional carbon fibre-reinforced epoxy plies of different thickness are considered to...
In situ X-ray synchrotron radiation computed tomography (SRCT) of carbon fiber composite laminates reveals the first-ever qualitative and quantitative comparisons of 3D progressive damage effects introduced by two mechanical enhancement technologies: aligned nanoscale fiber interlaminar reinforcement and thin-ply layers. The technologies were studi...
Interlaminar crack onset and propagation in fibre-reinforced composites is here investigated in detail through the development of a micromechanics framework. The different dissipative effects that characterize crack propagation are assessed by using the appropriate constitutive material models. The phenomenon of delamination migration between angle...
Industry statistics show that lightning strikes account for approximately 34% of all in-service damage caused to aeroplanes. Because low-conductive CFRPs are more vulnerable to lightning-induced damage than metals, their extensive use in airframes, which in new generation wide-body aeroplanes ascends to over 50% in structural weight and 90% in surf...
For the past six years, we have been benefiting from the discovery by [1] that the trace of the plane stress stiffness matrix (tr(Q)) of an orthotropic composite is a fundamental and powerful scaling property of laminated composite materials. Algebraically, tr(Q) turns out to be a measure of the summation of the moduli of the material. It is, there...
The apparent crack resistance curves associated with longitudinal tensile failure of carbon fibre reinforced epoxy composite systems with ply thicknesses of 0.075 mm, 0.134 mm and 0.268 mm are determined experimentally from the size effect law of geometrically similar double edge notch tension cross-ply specimens. An increase in notched strength as...
The introduction of the spread-tow thin-ply technology enabled the development of composite plies as thin as 0.020 mm. The availability of composite plies with a broader thickness range makes the understanding of the effects of ply thickness more pertinent than ever, therefore, a comprehensive literature review is presented in this paper. The micro...
This paper presents the application of a composite damage model to predict the edge impact and compression after edge impact (CAEI) response of CFRP laminates. First, a mesh sensitivity analysis is performed showing that the mesh needs to be sufficiently fine to accurately capture the permanent out-of-plane deformation at the impact location, which...
This paper presents a micromechanical finite element model to study interlaminar damage propagation and relocation, known as delamination migration, between angled plies, consisting of a double-ply \theta/0◦ Unit Cell (UC) in-between homogenised unidirectional 0◦ plies. Random fibre distributions and appropriate constitutive models are used to mode...
This paper presents the development and validation of a mesoscale numerical model for predicting damage and failure of bolted joints in laminated composites with different configurations and geometries. Double-shear and single-shear composite bolted joints with different widths and end distances were analyzed. The composite material model combined...
The development of numerical tools to complement the experimental determination of structural design parameters is of key importance to hasten the certification process of new materials and structures. In this work, a methodology to simulate elastic and inelastic deformation of composite laminates at the subcomponent level based on finite element a...
This paper presents the development and validation of a mesoscale numerical model for predicting the bearing damage and failure of composite laminates reinforced by unidirectional fibers. Firstly, half-hole pin bearing tests were carried out on composite laminates with both quasi-isotropic and soft lay-ups, as well as in specimens with variations i...
To simplify the analysis and characterisation of composite laminates, an invariant-based approach to stiffness that takes the trace of the plane stress stiffness matrix as a material property was recently proposed. In the present work, a study based on micro-mechanical models brings new insight to this invariant-based approach. The Rule of Mixtures...
Together with fiber breakage and matrix cracking, delamination is one of the common damage mechanisms occurring in laminated fiber-reinforced composite structures. Delamination initiates due to the relatively low interlaminar strength of adjacent plies. Delamination onset and propagation can be induced by various combinations of loads and usually l...
This paper describes a new approach for the simulation of lightning-induced damage in carbon fibre-reinforce polymer (CFRP) composite materials. In the past, the lightning-induced damage was mainly described by thermal or thermoelectric approaches. However these approaches need to be supplemented by mechanical pressure/force concepts for describing...
The design of composite structures relies on the accurate determination of design allowables, which are statistically based material parameters that take into account manufacturing, geometrical and microstructure variability. The accurate determination of these design parameters requires extensive experimental testing, which makes the certification...
This paper provides an overview of the current approaches to predict damage and failure of composite laminates at the micro-(constituent), meso-(ply), and macro-(structural) levels, and their application to understand the underlying physical phenomena that govern the mechanical response of thin-ply composites. In this context, computational micro-m...
Considering the growing interest for strong rigid lightweight structures the present work investigates the use of commercially available black corkboards as core material in composite sandwich structures. In addition to a commercial low density product, a modified material developed at laboratory scale, containing polymeric pillars, is also conside...
The enhanced mechanical performance of thin-ply laminates results from their ability to delay the onset of damage typically observed in composite materials. However, in notched structures, subcritical damage growth causes beneficial stress redistributions in the vicinity of the notch, blunting the stress concentration. Precluding these damage mecha...
Thin-ply carbon fiber laminates have exhibited superior mechanical properties and damage resistance when compared to standard thickness plies and enable greater flexibility in laminate design. However, the increased ply count in thin-ply laminates also increases the number of ply-ply interfaces, thereby increasing the number of relatively weak and...
A micromechanics framework for modelling the mode II interlaminar crack onset and propagation in
fibre-reinforced composites is presented with the aim of i) modelling the micro-scale failure mechanisms
that underlie interlaminar crack propagation, and ii) determining the effect of the through-thickness
pressure on mode II fracture toughness. An alg...
This chapter presents the analysis models, developed at different length scales, for the prediction of inelastic deformation and fracture of polymer composite materials reinforced by unidirectional fibers. Three different length scales are covered. Micro-mechanical models are used to understand in detail the effects of the constituents on the respo...
Advanced non-linear Finite Element models for the strength prediction of composite laminates normally result in long computing times that are not suitable for preliminary sizing and optimisation of structural details. Macro-mechanical analytical models, in spite of providing quick predictions, are based on properties determined from tests performed...
The present paper describes a new approach for modelling and simulation of lightning-induced damage of carbon fibre-reinforced polymer (CFRP) structures. In the past, the lightning-induced damage was mainly described by thermal or thermo-electric approaches. However, these approaches need to be supplemented by mechanical pressure/force concepts for...
The present paper describes a new approach for modelling and simulation of lightning-induced damage of carbon fibre-reinforced polymer (CFRP) structures. In the past, the lightning-induced damage was mainly described by thermal or thermo-electric approaches. However, these approaches need to be supplemented by mechanical pressure/force concepts for...
The use of polymer foams as core materials in composite sandwich structures is currently a well-established practice. Polymer foam properties in general improve with its bulk density, and it is a subject of interest to study ways by which high performance polymer foams can be modified through density reduction without significantly lowering mechani...
The effect of ply thickness on the onset of intralaminar and interlaminar damage is extremely important for the structural response of laminated composite structures. This subject has gained particular interest in recent years due to the introduction in the market of spread-tow, ultra-thin carbon-fibre reinforcements with different configurations....
This chapter presents the main possibilities to use cork-based composites on structural applications. Particular emphasis will be given to the use of cork core materials for sandwich constructions, as well as on damage tolerant solutions using cork. The relevant properties (mechanical, thermal, acoustical and chemical) for the applications will be...
Thin ply laminates are a new class of composite materials with great potential for application in the design of thinner and highly optimized components, resulting in potential weight savings and improved mechanical performance. These new composites can stir the development of lighter structures, overcoming current design limitations as well as nota...
The traditional method of manufacturing sandwich structures using a structural adhesive to achieve face-sheets to core bonding maintains widespread use. Most research addressing experimental performance of sandwich structures focuses on core and face-sheet related parameters, and only marginal attention is directed to the mechanical properties of t...
Advanced non-linear Finite Element models for the strength prediction of composite laminates normally result in long computing times that are not suitable for preliminary sizing and optimisation of structural details. Macro-mechanical analytical models, in spite of providing quick predictions, are based on properties determined from tests performed...
This chapter presents the main possibilities to use cork-based composites on structural applications.
Particular emphasis will be given to the use of cork core materials for sandwich constructions, as well as on damage tolerant solutions using cork. The relevant properties (mechanical, thermal, acoustical and chemical) for the applications will be...
This work presents an experimental study on the effect of ply-level hybridisation on the tensile unnotched and notched response of composite laminates. In a first assessment, notched tests were performed on laminates with nominal ply thicknesses between 0.03 mm and 0.30 mm. From the understanding of the effect of ply thickness on the damage mechani...
This chapter describes failure criteria for polymer composites reinforced by unidirectional fibres. The failure criteria are based on an invariant quadratic formulation based on structural tensors that accounts for the preferred directions of the transversely isotropic material. Failure in a single UD ply is predicted, requiring the analysis of str...
A novel invariant-based approach to describe stiffness and strength of carbon-fiber-reinforced plastic composites has been recently proposed in the literature. In this work, a direct sizing method based on trace of the plane stress stiffness matrix and unit circle failure criterion is proposed. Strength-based profile of a panel is first determined...
Composite sandwich structures have found widespread application in automotive, aeronautic, aerospace, marine and civil industries, owing primarily, to the high specific strength- and stiffness-to-weight ratios which can be achieved. These structures comprise a low bulk density core material and two comparatively much thinner and rigid face-sheets....
A new three-dimensional failure criteria for fibre-reinforced composite materials based on structural tensors is presented. The transverse and the longitudinal failure mechanisms are formulated considering different criteria: for the transverse failure mechanisms, the proposed three-dimensional invariant-based criterion is formulated directly from...
A new model based on Finite Fracture Mechanics (FFMs) has been proposed to predict the open-hole tensile strength of composite laminates (Camanho et al., 2012). Failure is predicted when both stress-based and energy-based criteria are satisfied. This model is based on an analytical solution, and no empirical adjusting parameters are required, but o...
This paper presents a new method to measure the crack resistance curve associated with the longitudinal failure of polymer composites reinforced by unidirectional fibres. Rather than using compact tension test specimens, the identification of the size-effect law of double edge notched specimens is used to obtain the crack resistance curve. Special...