M.H. Aliabadi
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View article: Robust impact localisation on composite aerostructures using kernel design and Bayesian-inspired model averaging under environmental and operational uncertainties
Robust impact localisation on composite aerostructures using kernel design and Bayesian-inspired model averaging under environmental and operational uncertainties Open
Impact localisation on composite aircraft structures remains a significant challenge due to operational and environmental uncertainties, such as variations in temperature, impact mass and energy levels. This study proposes a novel Gaussian…
View article: A Batch-Processing FFT-based Method for Efficient Homogenisation of Periodic Media Using GPU
A Batch-Processing FFT-based Method for Efficient Homogenisation of Periodic Media Using GPU Open
This paper presents an efficient GPU-based batch computing algorithm for solving homogenisation problems in periodic media using the Fast Fourier Transform (FFT)-based method. Building upon the basic scheme, the proposed algorithm utilises…
View article: Physics-guided impact localisation and force estimation in composite plates with uncertainty quantification
Physics-guided impact localisation and force estimation in composite plates with uncertainty quantification Open
Physics-guided approaches offer a promising path toward accurate and generalisable impact identification in composite structures, especially when experimental data are sparse. This paper presents a hybrid framework for impact localisation …
View article: Robust impact localisation on composite aerostructures using kernel design and Bayesian fusion under environmental and operational uncertainties
Robust impact localisation on composite aerostructures using kernel design and Bayesian fusion under environmental and operational uncertainties Open
Impact localisation on composite aircraft structures remains a significant challenge due to operational and environmental uncertainties, such as variations in temperature, impact mass, and energy levels. This study proposes a novel Gaussia…
View article: Geometry Optimization of a Highly Flexible Gradient Metamaterial Structure Using a Differential Evolution Algorithm
Geometry Optimization of a Highly Flexible Gradient Metamaterial Structure Using a Differential Evolution Algorithm Open
Gradient structures can offer great flexibility in parameter tuning, enabling the achievement of tailored mechanical properties for specific applications, and can even outperform their uniform counterparts. However, the design of such comp…
View article: Baseline-Free Detection of Progressive Fatigue Damage Using Nonlinear Ultrasonic Guided Waves
Baseline-Free Detection of Progressive Fatigue Damage Using Nonlinear Ultrasonic Guided Waves Open
Detecting fatigue-induced progressive damage under varying environmental conditions remains a major challenge in structural health monitoring (SHM). This study investigates a baseline-free nonlinear guided wave method, which extracts nonli…
View article: Bayesian-informed fatigue life prediction in shallow shell structures with the dual boundary element method
Bayesian-informed fatigue life prediction in shallow shell structures with the dual boundary element method Open
This study introduces an innovative approach for statistically inferring the Equivalent Initial Flaw Size Distribution (EIFSD) in shallow shell structures with the aim of predicting fatigue life. The proposed approach integrates Bayesian i…
View article: FFT-based homogenisation for efficient concurrent multiscale modelling of thin plate structures
FFT-based homogenisation for efficient concurrent multiscale modelling of thin plate structures Open
This paper presents a novel approach to concurrent multiscale analysis, where structures are formulated at both microscopic and macro levels for simulation purposes. The proposed method employs a plate model to formulate structures at both…
View article: Time of Arrival Extraction for Impact Localisation on Composite Structures
Time of Arrival Extraction for Impact Localisation on Composite Structures Open
Time of arrival (TOA) serves as a widely utilised metric for pinpointing impact locations on composite aircraft structures. Nevertheless, the effectiveness and reliability of existing TOA extraction methods across diverse impact scenarios …
View article: Reliability analysis of fatigue crack growth in shallow shell structures using the Dual Boundary Element Method
Reliability analysis of fatigue crack growth in shallow shell structures using the Dual Boundary Element Method Open
This work presents a novel methodology for fatigue life reliability analysis using a newly developed Dual Boundary Element Method-based Implicit Differentiation Method (DBEM-IDM) in shallow shell structures. The proposed DBEM formulations …
View article: Hybrid physics-based and data-driven impact localisation for composite laminates
Hybrid physics-based and data-driven impact localisation for composite laminates Open
The current challenges facing data-driven impact localisation methods primarily involve accurately localising impacts occurring outside the training impact coverage area, particularly for anisotropic composite structures. This study addres…
View article: Multi-objective SHM sensor path optimisation for damage detection in large composite stiffened panels
Multi-objective SHM sensor path optimisation for damage detection in large composite stiffened panels Open
This work proposes a novel methodology for the automatic multi-objective optimisation of sensor paths in structural health monitoring (SHM) sensor networks using archived multi-objective simulated annealing. Using all of the sensor paths w…
View article: Investigation of Baseline-free Techniques for Damage Localisation on Anisotropic Composite Structures
Investigation of Baseline-free Techniques for Damage Localisation on Anisotropic Composite Structures Open
In this paper, several baseline-free methods in realm of guided wave structural health monitoring (GWSHM), namely the virtual time reversal (VTR), the reciprocity-based and the instantaneous baseline (IB) techniques, are investigated and c…
View article: Reliability-based Fracture Analysis for Shallow Shell Structure with the Dual Boundary Element Method
Reliability-based Fracture Analysis for Shallow Shell Structure with the Dual Boundary Element Method Open
Reliability analysis has gained prominence as a stochastic approach to incorporate uncertainties in structural analysis. This study presents a novel methodology for evaluating the sensitivity of the crack tip stress intensity factor in a s…
View article: FFT-based homogenisation for Thin Plate Structures
FFT-based homogenisation for Thin Plate Structures Open
This paper introduces an FFT-based homogenisation approach designed to mitigate the computational demands associated with conventional numerical methods for thin plate structures. The periodic Lippman-Schwinger is proposed equation as an a…
View article: Optimizing Sensor Paths for Enhanced Damage Detection in Large Composite Stiffened Panels - A Multi-Objective Approach
Optimizing Sensor Paths for Enhanced Damage Detection in Large Composite Stiffened Panels - A Multi-Objective Approach Open
This work proposes a novel methodology for the automatic multi-objective optimisation of sensor paths in Structural Health Monitoring (SHM) sensor networks using Archived Multi-Objective Simulated Annealing (AMOSA). Using all of the sensor…
View article: Influence of placing positions of PZT transducers in thick composites on ultrasonic guided waves
Influence of placing positions of PZT transducers in thick composites on ultrasonic guided waves Open
The main objective of the paper is to investigate the wave propagation behaviour in composites using numerical and experimental methods. Specifically, the study focuses on the actuation of waves by two PZT transducers placed on the surface…
View article: A hybrid method based on vibration and guided waves for damage detection and localization
A hybrid method based on vibration and guided waves for damage detection and localization Open
In this study, aiming at existing challenges in guided wave-based structure health monitoring (GWSHM) and vibration-based structure health monitoring (VSHM) methods, a hybrid method combining the advantages of these two methods is proposed…
View article: Meshless variational method applied to Mixed-mode dynamic stress intensity factors
Meshless variational method applied to Mixed-mode dynamic stress intensity factors Open
For linear elastic fracture mechanics, the variational technique with a path independent contour integral is used to determine the stress intensity factors (SIFs) for functionally graded materials (FGMs) under static and dynamic loads in t…
View article: The temperature effects on embedded PZT signals in structural health monitoring for composite structures with different thicknesses
The temperature effects on embedded PZT signals in structural health monitoring for composite structures with different thicknesses Open
Ultrasonics guided waves (GWs) are established as an effective structural health monitoring technique for detecting damage in composite structures. However, for GWs to be applied reliably in service, the effect of temperature needs to be a…