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Structural–fluidic–acoustic computational modelling and experimental validation of piezoelectric synthetic jet actuators (2023)
Journal Article
Gungordu, B., Jabbal, M., & Popov, A. A. (2023). Structural–fluidic–acoustic computational modelling and experimental validation of piezoelectric synthetic jet actuators. International Journal of Heat and Fluid Flow, 104, Article 109215. https://doi.org/10.1016/j.ijheatfluidflow.2023.109215

In this study, coupled structural–fluidic–acoustic modelling of piezoelectric diaphragm driven synthetic jet actuators is conducted computationally for the first time. The aim is to demonstrate the importance of piezoelectric diaphragm structural mod... Read More about Structural–fluidic–acoustic computational modelling and experimental validation of piezoelectric synthetic jet actuators.

Enhancing Jet Velocity and Power Conversion Efficiency of Piezoelectric Synthetic Jet Actuators (2023)
Journal Article
Gungordu, B., Jabbal, M., & Popov, A. A. (2023). Enhancing Jet Velocity and Power Conversion Efficiency of Piezoelectric Synthetic Jet Actuators. AIAA Journal, 61(10), 4321–4331. https://doi.org/10.2514/1.j062930

The present work discusses an experimental investigation into the effect of piezoceramic employed to drive a synthetic jet actuator into a quiescent flow. The electromechanical coupling ratio of polycrystalline piezoceramics, lead zirconate–titanate... Read More about Enhancing Jet Velocity and Power Conversion Efficiency of Piezoelectric Synthetic Jet Actuators.

A framework for manufacturing system reconfiguration and optimisation utilising digital twins and modular artificial intelligence (2023)
Journal Article
Mo, F., Rehman, H. U., Monetti, F. M., Chaplin, J. C., Sanderson, D., Popov, A., …Ratchev, S. (2023). A framework for manufacturing system reconfiguration and optimisation utilising digital twins and modular artificial intelligence. Robotics and Computer-Integrated Manufacturing, 82, Article 102524. https://doi.org/10.1016/j.rcim.2022.102524

Digital twins and artificial intelligence have shown promise for improving the robustness, responsiveness, and productivity of industrial systems. However, traditional digital twin approaches are often only employed to augment single, static systems... Read More about A framework for manufacturing system reconfiguration and optimisation utilising digital twins and modular artificial intelligence.

Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization (2022)
Journal Article
Elshafei, B., Peña, A., Popov, A., Giddings, D., Ren, J., Xu, D., & Mao, X. (2023). Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization. Renewable Energy, 202, 1215-1225. https://doi.org/10.1016/j.renene.2022.12.006

In the pre-construction of wind farms, wind resource assessment is of paramount importance. Measurements by lidars are a source of high-fidelity data. However, they are expensive and sparse in space and time. Contrarily, Weather Research and Forecast... Read More about Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization.

Automating the Generation of MBD-Driven Assembly Work Instruction Documentation for Aircraft Components (2022)
Conference Proceeding
Papadaki, A. R., Bacharoudis, K., Bainbridge, D., Burbage, N., Turner, A., Sanderson, D., …Ratchev, S. M. (2023). Automating the Generation of MBD-Driven Assembly Work Instruction Documentation for Aircraft Components. In Flexible Automation and Intelligent Manufacturing: The Human-Data-Technology Nexus: Proceedings of FAIM 2022, June 19–23, 2022, Detroit, Michigan, USA (394-403). https://doi.org/10.1007/978-3-031-18326-3_38

The classical approach to the creation of assembly work instructions for high value, complex products is time-consuming and prone to error. It requires a process engineer to write the work instructions step-by-step and manually insert specific techni... Read More about Automating the Generation of MBD-Driven Assembly Work Instruction Documentation for Aircraft Components.

An efficient cost estimation framework for aerospace applications using Matlab/Simulink (2021)
Journal Article
Bacharoudis, K., Wilson, H., Goodfellow-Jones, S., Popov, A., & Ratchev, S. (2021). An efficient cost estimation framework for aerospace applications using Matlab/Simulink. Procedia CIRP, 104, 1143-1148. https://doi.org/10.1016/j.procir.2021.11.192

The ability to estimate costs and process times at the early stage of a design phase is of great importance to the product development process, enabling selection of the most suitable design and manufacturing concepts. Therefore, herein an efficient... Read More about An efficient cost estimation framework for aerospace applications using Matlab/Simulink.

Learning Feedforward Control for Industrial Manipulators (2021)
Conference Proceeding
Liu, C., Popov, A., Turner, A., Shires, E., & Ratchev, S. (2021). Learning Feedforward Control for Industrial Manipulators. In 2021 IEEE 10th Data Driven Control and Learning Systems Conference (DDCLS) (523-528). https://doi.org/10.1109/DDCLS52934.2021.9455672

In this work, an iterative learning control (ILC) algorithm is proposed for industrial manipulators. The proposed ILC algorithm works coordinately with the inverse dynamics of the manipulator and a feedback controller. The entire control scheme has t... Read More about Learning Feedforward Control for Industrial Manipulators.

Application of advanced simulation methods for the tolerance analysis of mechanical assemblies (2021)
Conference Proceeding
Bacharoudis, K., Popov, A., & Ratchev, S. (2021). Application of advanced simulation methods for the tolerance analysis of mechanical assemblies. . https://doi.org/10.1007/978-3-030-72632-4_11

In the frame of a statistical tolerance analysis of complex assemblies, for example an aircraft wing, the capability to predict accurately and fast specified, very small quantiles of the distribution of the assembly key characteristic becomes crucial... Read More about Application of advanced simulation methods for the tolerance analysis of mechanical assemblies.

Implementation of dimensional management methodology and optimisation algorithms for pre-drilled hinge line interfaces of critical aero assemblies - A case study (2020)
Journal Article
Bacharoudis, K. C., Bainbridge, D., Turner, A., & Popov, A. A. (2021). Implementation of dimensional management methodology and optimisation algorithms for pre-drilled hinge line interfaces of critical aero assemblies - A case study. Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 235(6-7), 1074-1083. https://doi.org/10.1177/0954405420978101

A dimensional management procedure is developed and implemented in this work to deal with the identification of the optimum hole diameter that needs to be pre-drilled in order to successfully join two subassemblies in a common hinge line interface wh... Read More about Implementation of dimensional management methodology and optimisation algorithms for pre-drilled hinge line interfaces of critical aero assemblies - A case study.

Tolerance allocation: A reliability based optimisation approach (2020)
Journal Article
Bacharoudis, K., Popov, A., & Ratchev, S. (2020). Tolerance allocation: A reliability based optimisation approach. Procedia Manufacturing, 51, 1038-1045. https://doi.org/10.1016/j.promfg.2020.10.146

Tolerance analysis and allocation are two activities of great importance in product development. The mathematical formulation of the latter concerns the establishment and solution of a constraint optimisation problem. In this work, making one step fo... Read More about Tolerance allocation: A reliability based optimisation approach.

Incremental sheet forming of thermoplastics: a review (2020)
Journal Article
Zhu, H., Ou, H., & Popov, A. (2020). Incremental sheet forming of thermoplastics: a review. International Journal of Advanced Manufacturing Technology, 111, 565-587. https://doi.org/10.1007/s00170-020-06056-5

Incremental sheet forming (ISF) is a promising flexible manufacturing process, which has been tested in sheet forming of various metallic materials. Although ISF based forming of thermoplastics is relatively new, it has drawn considerable interests a... Read More about Incremental sheet forming of thermoplastics: a review.

A phenomenological constitutive model for the viscoelastic deformation of elastomers (2020)
Journal Article
Annarasa, V., Popov, A. A., & De Focatiis, D. S. A. (2020). A phenomenological constitutive model for the viscoelastic deformation of elastomers. Mechanics of Time-Dependent Materials, https://doi.org/10.1007/s11043-020-09452-2

This study proposes a one-dimensional constitutive model for elastomeric materials based on recent observations regarding the separation of elastic and viscous contributions in uniaxial cyclic tensile experiments on EPDM rubber. The focus is on captu... Read More about A phenomenological constitutive model for the viscoelastic deformation of elastomers.

A probabilistic approach for trade-off analysis of composite wing structures at the conceptual phase of design (2019)
Conference Proceeding
Bacharoudis, K., Turner, T., Popov, A., & Ratchev, S. (2019). A probabilistic approach for trade-off analysis of composite wing structures at the conceptual phase of design. In S. Ratchev (Ed.), Precision Assembly in the Digital Age (103-113). https://doi.org/10.1007/978-3-030-05931-6_10

One of the major elements when performing a design for manufacturing and assembly methodology is the cost modelling method. A probabilistic cost approach is introduced herein for the series production of a composite wing structure. The proposed metho... Read More about A probabilistic approach for trade-off analysis of composite wing structures at the conceptual phase of design.

Hierarchical Control for Trajectory Generation and Tracking Via Active Front Steering (2019)
Journal Article
Hellewell, J. S., Popov, A. A., & Burnett, G. E. (2020). Hierarchical Control for Trajectory Generation and Tracking Via Active Front Steering. Journal of Dynamic Systems, Measurement, and Control, 142(1), 1-10. https://doi.org/10.1115/1.4044620

A new hierarchical model predictive controller for autonomous vehicle steering control is presented. The controller generates a path of shortest distance by determining lateral coordinates on a longitudinal grid, while respecting road bounds. This pa... Read More about Hierarchical Control for Trajectory Generation and Tracking Via Active Front Steering.

Advanced Assembly Solutions for the Airbus RACER Joined-Wing Configuration (2019)
Conference Proceeding
Bainbridge, D., Bacharoudis, K., Cini, A., Turner, A., Popov, A., & Ratchev, S. (2019). Advanced Assembly Solutions for the Airbus RACER Joined-Wing Configuration

The Rapid And Cost Effective Rotorcraft (RACER) is being developed by Airbus Helicopters (AH) to demonstrate a new Vertical TakeOff and Landing configuration to fill the mobility gap between conventional helicopters and aeroplanes. RACER is a compoun... Read More about Advanced Assembly Solutions for the Airbus RACER Joined-Wing Configuration.

Effects of mechanical non-linearity on the dynamic behaviour of ring-based inertial rate sensors (2019)
Journal Article
Popov, A. A., Napoli, V. D., & McWilliam, S. (2019). Effects of mechanical non-linearity on the dynamic behaviour of ring-based inertial rate sensors. Vibroengineering Procedia, 27, 109-114. https://doi.org/10.21595/vp.2019.20957

© 2019 Violetta Di Napoli, et al. This paper presents a mathematical model to describe the 2 in-plane response of supported ring-based MEMS Coriolis Vibrating Gyroscopes (CVGs), including mechanical non-linearity in ring and support structures. Whils... Read More about Effects of mechanical non-linearity on the dynamic behaviour of ring-based inertial rate sensors.

Nonlinear electrostatic effects in MEMS ring-based rate sensors under shock excitation (2019)
Journal Article
Sieberer, S., Mcwilliam, S., & Popov, A. A. (2019). Nonlinear electrostatic effects in MEMS ring-based rate sensors under shock excitation. International Journal of Mechanical Sciences, 157-158, 485-497. https://doi.org/10.1016/j.ijmecsci.2019.04.028

The vibration response of a capacitive ring-based Coriolis Vibrating Gyroscope (CVG) subjected to in-plane shock is modelled and analysed to quantify the effect of shock on angular velocity measurement. The model developed considers a ring resonator... Read More about Nonlinear electrostatic effects in MEMS ring-based rate sensors under shock excitation.

Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy (2018)
Journal Article
Bacharoudis, K., Bakker, O. J., Popov, A., & Ratchev, S. (2018). Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy. MATEC Web of Conferences, 233, Article 00008. https://doi.org/10.1051/matecconf/201823300008

The present study introduces a trade-off framework to evaluate assembly concepts to make informed decisions for aircraft wing structures. This includes (1) the design of the assembly concepts and the estimation of the probability of achieving specifi... Read More about Trade-off study of a variation aware determinate wing assembly against a traditional assembly strategy.

Computationally-efficient aeroelastic analysis tool for short-wing/propeller configuration on compound helicopters (2018)
Presentation / Conference
Wang, Z., & Popov, A. A. (2018, September). Computationally-efficient aeroelastic analysis tool for short-wing/propeller configuration on compound helicopters. Paper presented at International Conference on Noise and Vibration Engineering (ISMA-USD 2018), Leuven, Belgium

A time-domain aeroelastic analysis for short-wing/propeller configuration in compound helicopters is presented in this paper. A linear Timoshenko beam is used in conjunction with analytical aerodynamic theories, while propeller effects are simplified... Read More about Computationally-efficient aeroelastic analysis tool for short-wing/propeller configuration on compound helicopters.