All Outputs (288)

Assessment of river water quality for irrigation using multiple indices (2022)
Journal Article
Ukoha-Onuoha, E., Fubara-Manuel, I., Jumbo, R. B., & Ikrang, E. (2022). Assessment of river water quality for irrigation using multiple indices. Journal of Research in Environmental and Earth Sciences, 8(3), 53-60

The use of a single irrigation water index in the characterization of irrigation water quality may not suffice because of the combined and individual impact of several primary water physiochemical parameters on the overall water quality. Therefore, t... Read More about Assessment of river water quality for irrigation using multiple indices.

Fire performance analyses of modular wall panel designs with loadbearing SHS columns (2022)
Journal Article
Perera, D., Upasiri, I., Poologanathan, K., Perampalam, G., O'Grady, K., Rezazadeh, M., …Hewavitharana, T. (2022). Fire performance analyses of modular wall panel designs with loadbearing SHS columns. Case Studies in Construction Materials, 17, Article e01179. https://doi.org/10.1016/j.cscm.2022.e01179

Modular Building Systems (MBS) are still in the phase of developing its popularity in the industry, with emerging novel designs. Initially, MBS walls and floors had been highly influenced by the Light-gauge Steel Frame (LSF) designs made of Cold-Form... Read More about Fire performance analyses of modular wall panel designs with loadbearing SHS columns.

Evaluation of inter-modular connection behaviour under lateral loads: An experimental and numerical study (2022)
Journal Article
Rajanayagam, H., Gunawardena, T., Mendis, P., Poologanathan, K., Gatheeshgar, P., Dissanayake, M., & Corradi, M. (2022). Evaluation of inter-modular connection behaviour under lateral loads: An experimental and numerical study. Journal of Constructional Steel Research, 194, Article 107335. https://doi.org/10.1016/j.jcsr.2022.107335

This study focuses on a comprehensive investigation of the inter-modular connection shear behaviour under lateral load using theoretical, experimental, and numerical analyses. Initially, three design configurations of proposed inter-modular connectio... Read More about Evaluation of inter-modular connection behaviour under lateral loads: An experimental and numerical study.

Aeromechanical analysis of a next-generation Mars Hexacopter rotor (2022)
Journal Article
Chi, C., Lumba, R., Jung, Y. S., & Datta, A. (2022). Aeromechanical analysis of a next-generation Mars Hexacopter rotor. Journal of Aircraft, 59(6), 1463-1477. https://doi.org/10.2514/1.C036739

A three-dimensional (3D) aeromechanical analysis is carried out on the rotor blades of a 20 kg conceptual Mars Hexacopter. The objectives are to understand the aeroelastic behavior of its unique ultrathin low-Reynolds-number and high-Mach-number blad... Read More about Aeromechanical analysis of a next-generation Mars Hexacopter rotor.

Direct numerical simulations of aerodynamic performance of wind turbine aerofoil by considering the blades active vibrations (2022)
Journal Article
Nakhchi, M. E., Win Naung, S., Dala, L., & Rahmati, M. (2022). Direct numerical simulations of aerodynamic performance of wind turbine aerofoil by considering the blades active vibrations. Renewable Energy, 191, 669-684. https://doi.org/10.1016/j.renene.2022.04.052

In the present study, the aerodynamic performance of the horizontal-axis wind turbine blades by considering the flap-wise oscillations are numerically investigated by using direct numerical simulations (DNS). The details of flow structure can be anal... Read More about Direct numerical simulations of aerodynamic performance of wind turbine aerofoil by considering the blades active vibrations.

A novel hybrid control strategy of wind turbine wakes in tandem configuration to improve power production (2022)
Journal Article
Nakhchi, M. E., Win Naung, S., & Rahmati, M. (2022). A novel hybrid control strategy of wind turbine wakes in tandem configuration to improve power production. Energy Conversion and Management, 260, https://doi.org/10.1016/j.enconman.2022.115575

The wind turbines that operate in the wake region of the upstream turbines produce less power and may suffer serious structural issues due to highly unsteady flows, which can reduce the life expectancy of the turbines. In this study, a novel hybrid w... Read More about A novel hybrid control strategy of wind turbine wakes in tandem configuration to improve power production.

Real-time implementation of a super twisting control algorithm for an upper limb wearable robot (2022)
Journal Article
Fazli, E., Rakhtala, S. M., Mirrashid, N., & Karimi, H. R. (2022). Real-time implementation of a super twisting control algorithm for an upper limb wearable robot. Mechatronics, 84, Article 102808. https://doi.org/10.1016/j.mechatronics.2022.102808

This paper proposes a robust nonlinear controller for an active orthosis. The system is composed of the upper limb orthosis worn by the arm, which can be represented by a nonlinear second-order dynamical model. A robust control strategy is developed... Read More about Real-time implementation of a super twisting control algorithm for an upper limb wearable robot.

Prediction of shear capacity of steel channel sections using machine learning algorithms (2022)
Journal Article
Dissanayake, M., Nguyen, H., Poologanathan, K., Perampalam, G., Upasiri, I., Rajanayagam, H., & Suntharalingam, T. (2022). Prediction of shear capacity of steel channel sections using machine learning algorithms. Thin-Walled Structures, 175, Article 109152. https://doi.org/10.1016/j.tws.2022.109152

This study presents the application of popular machine learning algorithms in prediction of the shear resistance of steel channel sections using experimental and numerical data. Datasets of 108 results of stainless steel lipped channel sections and 2... Read More about Prediction of shear capacity of steel channel sections using machine learning algorithms.

PEM fuel cell system to extend the stack life based on a PID-PSO controller design (2022)
Journal Article
Ghasemi, J., Rakhtala, S. M., Rasekhi, J., & Dokhtala, S. R. (2022). PEM fuel cell system to extend the stack life based on a PID-PSO controller design. Complex Engineering Systems, 2(1), Article 4. https://doi.org/10.20517/ces.2022.02

In this paper, the nonlinear model of polymer exchange membrane (PEM) fuel cell system is first extracted and then tested and evaluated for various temperatures and pressures. With the severe nonlinear characteristics of the PEM fuel cell system, usi... Read More about PEM fuel cell system to extend the stack life based on a PID-PSO controller design.

Nonlinear robust controller design for an upper limb rehabilitation robot via variable gain super twisting sliding mode (2022)
Journal Article
Mirrashid, N., Alibeiki, E., & Rakhtala, S. M. (2022). Nonlinear robust controller design for an upper limb rehabilitation robot via variable gain super twisting sliding mode. International Journal of Dynamics and Control, 10(6), 1996-2010. https://doi.org/10.1007/s40435-021-00902-4

Rehabilitation robots have an effective role in helping patients with physical disabilities. Therefore, improving their performance is very important. In this paper, a robust nonlinear controller is proposed for the upper limb rehabilitation robot. T... Read More about Nonlinear robust controller design for an upper limb rehabilitation robot via variable gain super twisting sliding mode.

Tactile Sensing, Skill Learning, and Robotic Dexterous Manipulation (2022)
Book
Li, Q., Luo, S., Chen, Z., Zhang, J., & Yang, C. (2022). Tactile Sensing, Skill Learning, and Robotic Dexterous Manipulation. https://doi.org/10.1016/C2020-0-02663-0

Tactile Sensing, Skill Learning and Robotic Dexterous Manipulation focuses on cross-disciplinary lines of research and groundbreaking research ideas in three research lines: tactile sensing, skill learning and dexterous control. The book introduces r... Read More about Tactile Sensing, Skill Learning, and Robotic Dexterous Manipulation.

Self-tuning fuzzy logic PID controller with a practical view to PEM fuel cell air supply system (2021)
Journal Article
Rakhtala, S. M. (2021). Self-tuning fuzzy logic PID controller with a practical view to PEM fuel cell air supply system. International Journal of Modelling, Identification and Control, 37(2), 187-198. https://doi.org/10.1504/IJMIC.2021.120202

Polymer electrolyte membrane fuel cells (PEMFC) are proper candidates as energy resources for using in vehicular, industry and other applications. This paper concentrates on the nonlinear model of PEMFC system. Since the variation of the load current... Read More about Self-tuning fuzzy logic PID controller with a practical view to PEM fuel cell air supply system.

Experimental analysis of the dynamics of flared folding wingtips via a novel tethered flight test (2021)
Conference Proceeding
Healy, F., Pontillo, A., Rezgui, D., Cooper, J. E., Kirk, J., Wilson, T., & Castrichini, A. (2021). Experimental analysis of the dynamics of flared folding wingtips via a novel tethered flight test. In AIAA SCITECH 2022 Forum

Recent developments in morphing wing technologies are routinely tested using Unmanned Aerial vehicles (UAVs) due to their relatively low cost and time to manufacture. However, atmospheric flight tests limit both the repeatability of the recorded data... Read More about Experimental analysis of the dynamics of flared folding wingtips via a novel tethered flight test.

Low-order aeroelastic modelling of a high aspect ratio wing aircraft under constrained motion (2021)
Conference Proceeding
Pontillo, A., Banneheka Navaratna, P. D., Ascham, J., Lowenberg, M. H., Rezgui, D., Cooper, J. E., & Neild, S. A. (2021). Low-order aeroelastic modelling of a high aspect ratio wing aircraft under constrained motion. In AIAA SCITECH 2022 Forum. https://doi.org/10.2514/6.2022-1306

The work presented in this paper describes the modelling of a low-order aeroelastic solver, built with the aim of analysing the dynamics of very flexible wing aircraft, with a focus on the coupling between the flight dynamics and the structural dynam... Read More about Low-order aeroelastic modelling of a high aspect ratio wing aircraft under constrained motion.

Design and assessment of subscale flexible high aspect ratio cantilever wings (2021)
Conference Proceeding
Banneheka Navaratna, P. D., Pontillo, A., Rezgui, D., Lowenberg, M. H., Neild, S. A., & Cooper, J. E. (2021). Design and assessment of subscale flexible high aspect ratio cantilever wings. In AIAA SCITECH 2022 Forum. https://doi.org/10.2514/6.2022-1305

High aspect ratio wings have been the focus of several recent studies for efficiency improvements in modern aircraft. Many numerical studies can be found in literature with some experimental validations. The work presented here describes the design,... Read More about Design and assessment of subscale flexible high aspect ratio cantilever wings.

Influence of blade vibrations on aerodynamic performance of axial compressor in gas turbine: Direct numerical simulation (2021)
Journal Article
Nakhchi, M. E., Win Naung, S., & Rahmati, M. (2022). Influence of blade vibrations on aerodynamic performance of axial compressor in gas turbine: Direct numerical simulation. Energy, 242, Article 122988. https://doi.org/10.1016/j.energy.2021.122988

Flutter instability because of the blade vibrations is a major problem in axial compressor cascades. This paper investigates the effects of blade oscillations on aerodynamic performance and turbulent flow characteristics of modern gas-turbine compres... Read More about Influence of blade vibrations on aerodynamic performance of axial compressor in gas turbine: Direct numerical simulation.

Aeroelastic damping estimation for a flexible high-aspect-ratio wing (2021)
Journal Article
Tsatsas, I., Pontillo, A., & Lone, M. (2022). Aeroelastic damping estimation for a flexible high-aspect-ratio wing. Journal of Aerospace Engineering, 35(2), https://doi.org/10.1061/%28ASCE%29AS.1943-5525.0001390

Estimation of aeroelastic damping for a very flexible high-aspect-ratio wing using wind-tunnel test data is presented in this work through the comparison of four different methods: half-power, half-quadratic gain, an adapted version of random decreme... Read More about Aeroelastic damping estimation for a flexible high-aspect-ratio wing.

Real time control and fabrication of a soft robotic glove by two parallel sensors with MBD approach (2021)
Journal Article
Rakhtala, S. M., & Ghayebi, R. (2022). Real time control and fabrication of a soft robotic glove by two parallel sensors with MBD approach. Medical Engineering and Physics, 100, Article 103743. https://doi.org/10.1016/j.medengphy.2021.103743

Soft robotic gloves were designed to aid the rehabilitation process with hand pathologies and coordination of gripping exercises. The main issue in soft robotic actuators is to design a control strategy to overcome deformation in grasping exercises.... Read More about Real time control and fabrication of a soft robotic glove by two parallel sensors with MBD approach.

Thermal performance of LSF wall systems with vacuum insulation panels (2021)
Journal Article
Rajanayagam, H., Upasiri, I., Poologanathan, K., Gatheeshgar, P., Sherlock, P., Konthesingha, C., …Perera, D. (2021). Thermal performance of LSF wall systems with vacuum insulation panels. Buildings, 11(12), Article 621. https://doi.org/10.3390/buildings11120621

Lightweight Steel Frames (LSF) in building construction are becoming more popular due to their fast, clean, and flexible constructability. Typical LSF wall panels are made of cold-formed and thin-walled steel lipped channel studs with plasterboard li... Read More about Thermal performance of LSF wall systems with vacuum insulation panels.

Novel conventional and modular LSF wall panels with improved fire performance (2021)
Journal Article
Perera, D., Poologanathan, K., Gillie, M., Gatheeshgar, P., Sherlock, P., Upasiri, I., & Rajanayagam, H. (2022). Novel conventional and modular LSF wall panels with improved fire performance. Journal of Building Engineering, 46, Article 103612. https://doi.org/10.1016/j.jobe.2021.103612

Fire performance of Light-gauge Steel Frame (LSF) constructions is being extensively investigated recently, due to the critical behaviour of cold-formed steel structures at elevated temperatures. Among the many design parameters involved with LSF con... Read More about Novel conventional and modular LSF wall panels with improved fire performance.