A. Airoldi
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View article: Cost-Effectiveness of Structural Health Monitoring in Aviation: A Literature Review
Cost-Effectiveness of Structural Health Monitoring in Aviation: A Literature Review Open
(1) Background: Structural Health Monitoring Systems (SHMSs) can reduce maintenance costs and aircraft downtime. However, their economic impact remains underexplored, particularly in cost–benefit terms. (2) Methods: This study conducted a …
View article: Elevated temperature performance: Arc-jet testing of carbon fiber reinforced ZrB <sub>2</sub> bars up to 2200 °C for strength retention assessment
Elevated temperature performance: Arc-jet testing of carbon fiber reinforced ZrB <sub>2</sub> bars up to 2200 °C for strength retention assessment Open
For the first time, ultra-high temperature ceramic matrix composite bars were tested inside an arc-jet facility to investigate the impact of oxidation damage on strength retention. The composite bars, based on a ZrB2/SiC matrix reinforced …
View article: A novel body centered cubic 3D auxetic chiral geometry
A novel body centered cubic 3D auxetic chiral geometry Open
Auxetic materials and structures have a negative Poisson’s ratio (PR), which means that they expand under a longitudinal tensile loading and shrink under compressive load. This property gives them an increased shear resistance, damping and…
View article: Application of Artificial Neural Networks to a Model of a Helicopter Rotor Blade for Damage Identification in Realistic Load Conditions
Application of Artificial Neural Networks to a Model of a Helicopter Rotor Blade for Damage Identification in Realistic Load Conditions Open
Monitoring the integrity of aeronautical structures is fundamental for safety. Structural Health Monitoring Systems (SHMSs) perform real-time monitoring functions, but their performance must be carefully assessed. This is typically done by…
View article: Economic Impact Assessment of Structural Health Monitoring Systems on the Lifecycle of a Helicopter Blade
Economic Impact Assessment of Structural Health Monitoring Systems on the Lifecycle of a Helicopter Blade Open
Structural Health Monitoring Systems (SHMS) are currently widely investigated in the literature, however, their application to the aerospace industry is still limited. One of the reasons lies in the lack of methods aimed at evaluating thei…
View article: Engineering of a CMC aeronautical muffler
Engineering of a CMC aeronautical muffler Open
This work explores the feasibility of adopting an LSI produced C/SiC composite to build an aeronautical Auxiliary Power Unit system muffler. The study first covers the experimental material characterization through tensile and compressive …
View article: Damage Identification in a Helicopter Rotor Blade Root in Realistic Load Conditions With Neural Network-Based Algorithms
Damage Identification in a Helicopter Rotor Blade Root in Realistic Load Conditions With Neural Network-Based Algorithms Open
Monitoring the integrity of aeronautical structures is fundamental for safety. Structural Health Monitoring Systems (SHMS) perform real-time monitoring functions, but their performances must be carefully assessed. In this work the damage d…
View article: On the behavior of auxetic inserts: a numerical analysis to derive design guidelines
On the behavior of auxetic inserts: a numerical analysis to derive design guidelines Open
Auxetics are a class of materials and metamaterials with a negative Poisson’s ratio (ν) and have gained tremendous popularity over the last three decades. Many studies have focused on characterizing designs that allow obtaining a negative …
View article: A bi-phasic numerical approach for non-linear response and stiffness recovery related to residual thermal stress in UHTCMCs
A bi-phasic numerical approach for non-linear response and stiffness recovery related to residual thermal stress in UHTCMCs Open
The tensile properties of sintered Cf-ZrB2/SiC UHTCMCs were investigated for different lamination sequences, revealing ultimate strengths of 570 MPa (0°/0°), 120 MPa (0°/90°), and 40 MPa (90°/90°). The results facilitated modeling the mate…
View article: Economic Impact Assessment of Structural Health Monitoring Systems on Helicopter Blade Beginning of Life
Economic Impact Assessment of Structural Health Monitoring Systems on Helicopter Blade Beginning of Life Open
The economic impact of Structural Health Monitoring Systems based on optical fibre sensors is assessed in the development of composite helicopter rotor blades. Hence, the focus of this analysis is on the helicopter’s Beginning Of Life stag…
View article: Impact Response of Monolithic and Laminated Polycarbonate Panels: An Experimental and Numerical Investigation
Impact Response of Monolithic and Laminated Polycarbonate Panels: An Experimental and Numerical Investigation Open
This study aimed to investigate the impact resistance of monolithic and laminated polycarbonate plates for windshields in motorsport applications through a coupled experimental–numerical study. Both low- and high-velocity impact tests were…
View article: A meso-scale model of progressive damage and failure in LSI-produced ceramic matrix composites for aerospace applications
A meso-scale model of progressive damage and failure in LSI-produced ceramic matrix composites for aerospace applications Open
The paper is focused on the development of a modelling approach for Ceramic Matrix Composites (CMC) laminates, produced through a cost-affordable Liquid Silicon Infiltration (LSI) technique. The objective is the development of a tool capab…
View article: Development and manufacturing of flexible joints based on corrugated composite laminates
Development and manufacturing of flexible joints based on corrugated composite laminates Open
This paper investigates the exploitation of corrugated composite laminates to design flexible joints. The joint can sustain axial load using a flexible frame integrated into a composite tube, which transmits torque and supports the frame a…
View article: Feasibility of a Morphing Rocket Nozzle for Thrust Vector Control based on Corrugated Composite Laminates
Feasibility of a Morphing Rocket Nozzle for Thrust Vector Control based on Corrugated Composite Laminates Open
The paper presents technological, experimental and numerical studies aimed at the development of a morphing nozzle in composite material with a deformable divergent section, which is designed to control the vector of thrust in rockets with…
View article: Experimental Identification of Frictional Effects on Interlaminar Toughness of Composite Laminates in 4ENF Test
Experimental Identification of Frictional Effects on Interlaminar Toughness of Composite Laminates in 4ENF Test Open
Background Understanding and characterizing delamination in composite laminates is fundamental for analysing their structural integrity, since operational loads may promote the propagation of interlaminar defects. Propagation often occurs …
View article: Compression Behavior of EBM Printed Auxetic Chiral Structures
Compression Behavior of EBM Printed Auxetic Chiral Structures Open
In this study, the cyclic compression and crush behavior of chiral auxetic lattice structures produced from titanium alloy (Ti6Al4V) metallic powder using electron beam melting (EBM) additive manufacturing technology is investigated numeri…
View article: Numerical and experimental crushing behaviour investigation of EBM printed auxetic chiral lattices
Numerical and experimental crushing behaviour investigation of EBM printed auxetic chiral lattices Open
In this study, Electron Beam Melting (EBM) is used to produce chiral auxetic lattices,
\nand the compression of chiral auxetic lattice is investigated experimentally and numerically in the
\nedgewise direction, where auxeticity can be exp…