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Dr Aditya Khanna

Lecturer

School of Mechanical and Mining Engineering
Faculty of Engineering, Architecture and Information Technology
aditya.khanna@uq.edu.au
+61 7 336 54264

Overview

Dr Aditya Khanna is a Lecturer (Applied Mechanics) at The University of Queensland (commenced 2023). Prior to joining UQ, Aditya worked as an engineering consultant (dynamics and vibration) at Vipac Engineers & Scientists Ltd and held an adjunct lecturer appointment at The University of Adelaide. Aditya's research and industry consulting background is in the areas of: stress analysis, fatigue and fracture assessment, structural dynamics, vibration control, and non-destructive testing,

Qualifications

  • Doctor of Philosophy of Mechanical Engineering
  • Bachelor (Honours) of Mechanical Engineering, University of Adelaide

Publications

View all Publications

Grants

View all Grants

Supervision

  • Control of Chaotic Flutter in a Wind Turbine Airfoil

    Doctor Philosophy

View all Supervision

Available Projects

  • Preventing Offshore Wind-Turbine Dynamic Failures

    Vortices shed in the wake of a subsea power cable, apply fluctuating hydrodynamic forces, causing the cable to vibrate. If the vortex shedding frequency approaches the natural frequency of the cable, high amplitude vibration known as ‘Vortex-Induced Vibration’ or VIV occurs. VIV induces bending of the cable and sliding between the layers of the cable structure, often resulting in fatigue failure. While the research body on the modelling of the dynamic response and fatigue behaviour of power cables is mature, simultaneous modelling of these phenomena is still in its infancy.

    The project aims to develop an analytical, simulation and experimental framework that can model the multibody dynamic response and resulting fatigue damage accumulation in a unified manner. The analytical approach supported by more complex simulation and experimentation is preferred for the modelling of complex nonlinear phenomena.

    A multibody simulation model will be developed using FE and multibody simulation models in conjunction with a widely used global hydrodynamic model, Orcaflex. The analytical reduced order model, known as the wake oscillator model, will be utilised to predict VIV conditions efficiently in a wider range investigation. In this modelling approach, the fluctuating forces generated by vortex shedding are idealised by a nonlinear oscillator with a limit cycle. The structural motion interacts with the wake oscillator through a forcing term, forming a coupled system. The team at UQ have used a similar approach for prediction of Aeolian vibration in power lines, wind turbine flutter, brake squeal and railway wheel squeal. The developed modelling approach will advance previous studies by considering the nonlinear bending response of the helically wound power cable armour and conductors, which may improve the accuracy of fatigue damage calculations. A range of cable configurations will be considered, aimed at developing preventative guidelines against premature fatigue failures.

  • Investigation of Railway Studs and Squats

    The research seeks to develop a generalised validated mathematical model for rail studs, and in particular to examine how this mechanism differs from that for rail squats. Railway studs and squats are track defects that grow via dynamic loading over successive train wheel passages. The model would be used to predict growth of studs and to evaluate and determine optimum railway vehicle and track conditions to mitigate this rail defect. An extensive experimental and field study would be used to validate the results.

  • Passive control of wind turbine tower vibration

    Wind turbines, though designed to harvest wind energy, are also subjected to complex aerodynamic loads during operation. Studying the fluid-structure coupling, especially dynamic instabilities, remains one of the most important structural engineering issues for the wind energy industry. With an exponential growth in wind energy production, it is critical to continue improving the safety and availability of wind turbines, while avoiding unnecessary conservatism in their design.

    Passive vibration control techniques, such as Tuned Mass Dampers (TMDs), are extensively utilised for controlling wind-induced vibration (and the resulting cyclic stresses) in tall structures. Distributed TMDs are a promising candidate for the suppression of multi-modal and multi-directional wind excitation within the tight space constraints of the wind turbine structure. This PhD project will develop theoretical and computational models of wind turbines with distributed TMDs as the means for passive vibration control. Methods for the efficient prediction of wind turbine tower aeroelastic excitations will be developed.

    The project will perform the fundamental task of quantifying second-order aerodynamic effects that are currently ignored in design codes, while also developing a predictive modelling technique that is computationally efficient. Aerodynamic loads resulting from blade rotation, crosswinds, and, vortex shedding, are not considered in most dynamic models of wind turbines. In this PhD project, these complex aerodynamic loads will be quantified (experimentally and numerically) and coupled with lumped-parameter and finite-element models of the turbine.

View all Available Projects

Publications

Journal Article

Conference Publication

  • Review of Continuum Theories for the Deformation and Failure of Solid-State Electrolytes

    Khanna, Aditya (2024). Review of Continuum Theories for the Deformation and Failure of Solid-State Electrolytes. Engineers Australia.

  • Guidelines for the field-based vibration assessment of pressure vessel nozzles

    Khanna, Aditya and Young, Alex (2023). Guidelines for the field-based vibration assessment of pressure vessel nozzles. 17th Asia-Pacific Conference on Fracture and Strength and the 13th Conference on Structural Integrity and Failure (APCFS 2022 & SIF 2022), Adelaide, SA Australia, 6 - 9 December 2022. Amsterdam, Netherlands: Elsevier B.V.. doi: 10.1016/j.prostr.2023.05.008

  • Fatigue life estimation for heavy-tailed cyclic stress distributions

    Khanna, Aditya (2021). Fatigue life estimation for heavy-tailed cyclic stress distributions. 10th Australasian Congress on Applied Mechanics (ACAM10), Online, 1-3 December 2021. Barton, ACT Australia: Engineers Australia.

  • Mechanics and Evaluation of Early Damage

    Kotousov, Andrei, Vidler, James, Hughes, James, Khanna, Aditya, Ng, Ching-Tai and Mohabuth, Munawwar (2019). Mechanics and Evaluation of Early Damage. 19th International Colloquium on Mechanical Fatigue of Metals (ICMFM), Porto, Portugal, 5-7 September 2018. Cham, Switzerland: Springer. doi: 10.1007/978-3-030-13980-3_46

  • Review of Current Progress in 3D Linear Elastic Fracture Mechanics

    Kotousov, Andrei, Khanna, Aditya, Branco, Ricardo, De Jesus, Abilio M. P. and Correia, Jose A. F. O. (2019). Review of Current Progress in 3D Linear Elastic Fracture Mechanics. 19th International Colloquium on Mechanical Fatigue of Metals (ICMFM), Porto, Portugal, 5-7 September 2018. Cham, Switzerland: Springer. doi: 10.1007/978-3-030-13980-3_16

  • Measurement of residual stresses in rails using Rayleigh waves

    Hughes, James Martin, Vidler, James, Khanna, Aditya, Mohabuth, Munawwar, Kotousov, Andrei and Ng, Ching-Tai (2018). Measurement of residual stresses in rails using Rayleigh waves. International Conference on Structural Integrity and Failure, Perth, WA Australia, 3-6 December 2018. Perth, WA Australia: Australian Fracture Group.

  • On the coarse-scale residual opening of hydraulic fractures created using the Channel Fracturing technique

    Luong, Hao, Khanna, Aditya, Kotousov, Andrei and Rose, Francis (2018). On the coarse-scale residual opening of hydraulic fractures created using the Channel Fracturing technique. The 11th International Conference on Structural Integrity and Failure, Perth, WA Australia, 3-6 December 2018. Perth, WA Australia: Australian Fracture Group.

  • On the simplified modelling of front shapes of fatigue cracks

    Zakavi, B., Kotousov, A., Khanna, A. and Branco, R. (2018). On the simplified modelling of front shapes of fatigue cracks. International Conference on Structural Integrity and Failure, Perth, WA Australia, 3-6 December 2018. Perth, WA Australia: Australian Fracture Group.

  • Ultrasonic monitoring of compressive damage evolution in concrete

    Khanna, Aditya, Kotousov, Andrei, Ng, Ching-Tai and Rose, L.R. Francis (2018). Ultrasonic monitoring of compressive damage evolution in concrete. International Conference on Structural Integrity and Failure, Perth, WA Australia, 3-6 December 2018. Perth, WA Australia: Australian Fracture Group.

  • 3D displacement field in the cloase vicinity of a crack tip

    Kotousov, A., He, Z., Khanna, A. and Berto, F. (2017). 3D displacement field in the cloase vicinity of a crack tip. ICF 2017 - 14th International Conference on Fracture, Rhodes, Greece, 18-23 June 2017. Cassino, Italy: International Conference on Fracture.

  • Experimental observation of cumulative second harmonic generation of Lamb wave modes

    Mohabuth, M., Kotousov, A., Khanna, A. and Ng, C. T. (2017). Experimental observation of cumulative second harmonic generation of Lamb wave modes. ICF 2017 - 14th International Conference on Fracture, Rhodes, Greece, 18-23 June 2017. Cassino, Italy: International Conference on Fracture.

  • Features of 3D elastic solutions of plane problems with crack and sharp notches

    Kotousov, A., He, Z. and Khanna, A. (2017). Features of 3D elastic solutions of plane problems with crack and sharp notches. ICF 2017 - 14th International Conference on Fracture, Rhodes, Greece, 18-23 June 2017. Cassino, Italy: International Conference on Fracture.

  • On evaluation of fatigue crack front shapes

    Zakavi, B., Kotousov, A., Khanna, A. and Branco, R. (2017). On evaluation of fatigue crack front shapes. 9th Australasian Congress on Applied Mechanics, Sydney, NSW Australia, 27-29 November 2017. Barton, ACT Australia: Engineers Australia.

  • On the correspondence between two-And Three-Dimensional elastic solutions of crack problems

    Kotousov, Andrei, He, Zhuang and Khanna, Aditya (2016). On the correspondence between two-And Three-Dimensional elastic solutions of crack problems. 15th International Conference on Fracture and Damage Mechanics, Alicante, Spain, 14-16 September 2016. Pfaffikon, Switzerland: Trans Tech Publications. doi: 10.4028/www.scientific.net/kem.713.18

  • Experimental study on local plastic collapse in a plate weakened by two collinear cracks

    Mohabuth, Munawwar, Chang, Donghoon and Khanna, Aditya (2015). Experimental study on local plastic collapse in a plate weakened by two collinear cracks. EDP Sciences. doi: 10.1051/matecconf/20152801002

  • Mathematical model for stimulation of CBM reservoirs during graded proppant injection

    Keshavarz, A., Khanna, A., Hughes, T., Boniciolli, M., Cooper, A. and Bedrikovetsky, P. (2014). Mathematical model for stimulation of CBM reservoirs during graded proppant injection. SPE/EAGE European Unconventional Resources Conference and Exhibition, Vienna, Austria, 25–27 February 2014. Richardson, TX United States: Society of Petroleum Engineers. doi: 10.2118/167758-ms

  • An analysis of elasto-plastic fracture criteria

    Kotousov, A., Khanna, A. and Bun, S. (2014). An analysis of elasto-plastic fracture criteria. International Congress (APCF/SIF-2014), Sydney, NSW Australia, 9-12 December 2014. Cambridge, United Kingdom: Woodhead. doi: 10.1533/9780081002254.67

  • Stress analysis of a crack near an elastic layer

    Khanna, Aditya (2014). Stress analysis of a crack near an elastic layer. 8th Australian Congress on Applied Mechanics (ACAM 8), Melbourne, VIC Australia, 23-26 November 2014. Barton, ACT Australia: Engineers Australia.

  • Steady flow towards a row of collinear hydraulic fractures

    Khanna, Aditya and Kotousov, Andrei (2012). Steady flow towards a row of collinear hydraulic fractures. 7th Australasian Congress on Applied Mechanics (ACAM 7), Adelaide, SA Australia, 9-12 December 2012. Barton, ACT Australia: Engineers Australia.

  • Stimulation of Natural Cleats for Gas Production From Coal Beds by Graded Proppant Injection

    Bedrikovetsky, P., Keshavarz, A., Khanna, A., Kenzie, K. M. and Kotousov, A. (2012). Stimulation of Natural Cleats for Gas Production From Coal Beds by Graded Proppant Injection. SPE Asia Pacific Oil and Gas Conference and Exhibition, Perth, WA Australia, 22–24 October 2012. Richardson, TX United States: Society of Petroleum Engineers. doi: 10.2118/158761-ms

Grants (Administered at UQ)

PhD and MPhil Supervision

Current Supervision

  • Control of Chaotic Flutter in a Wind Turbine Airfoil

    Doctor Philosophy — Associate Advisor

    Other advisors:

Possible Research Projects

Note for students: The possible research projects listed on this page may not be comprehensive or up to date. Always feel free to contact the staff for more information, and also with your own research ideas.

  • Preventing Offshore Wind-Turbine Dynamic Failures

    Vortices shed in the wake of a subsea power cable, apply fluctuating hydrodynamic forces, causing the cable to vibrate. If the vortex shedding frequency approaches the natural frequency of the cable, high amplitude vibration known as ‘Vortex-Induced Vibration’ or VIV occurs. VIV induces bending of the cable and sliding between the layers of the cable structure, often resulting in fatigue failure. While the research body on the modelling of the dynamic response and fatigue behaviour of power cables is mature, simultaneous modelling of these phenomena is still in its infancy.

    The project aims to develop an analytical, simulation and experimental framework that can model the multibody dynamic response and resulting fatigue damage accumulation in a unified manner. The analytical approach supported by more complex simulation and experimentation is preferred for the modelling of complex nonlinear phenomena.

    A multibody simulation model will be developed using FE and multibody simulation models in conjunction with a widely used global hydrodynamic model, Orcaflex. The analytical reduced order model, known as the wake oscillator model, will be utilised to predict VIV conditions efficiently in a wider range investigation. In this modelling approach, the fluctuating forces generated by vortex shedding are idealised by a nonlinear oscillator with a limit cycle. The structural motion interacts with the wake oscillator through a forcing term, forming a coupled system. The team at UQ have used a similar approach for prediction of Aeolian vibration in power lines, wind turbine flutter, brake squeal and railway wheel squeal. The developed modelling approach will advance previous studies by considering the nonlinear bending response of the helically wound power cable armour and conductors, which may improve the accuracy of fatigue damage calculations. A range of cable configurations will be considered, aimed at developing preventative guidelines against premature fatigue failures.

  • Investigation of Railway Studs and Squats

    The research seeks to develop a generalised validated mathematical model for rail studs, and in particular to examine how this mechanism differs from that for rail squats. Railway studs and squats are track defects that grow via dynamic loading over successive train wheel passages. The model would be used to predict growth of studs and to evaluate and determine optimum railway vehicle and track conditions to mitigate this rail defect. An extensive experimental and field study would be used to validate the results.

  • Passive control of wind turbine tower vibration

    Wind turbines, though designed to harvest wind energy, are also subjected to complex aerodynamic loads during operation. Studying the fluid-structure coupling, especially dynamic instabilities, remains one of the most important structural engineering issues for the wind energy industry. With an exponential growth in wind energy production, it is critical to continue improving the safety and availability of wind turbines, while avoiding unnecessary conservatism in their design.

    Passive vibration control techniques, such as Tuned Mass Dampers (TMDs), are extensively utilised for controlling wind-induced vibration (and the resulting cyclic stresses) in tall structures. Distributed TMDs are a promising candidate for the suppression of multi-modal and multi-directional wind excitation within the tight space constraints of the wind turbine structure. This PhD project will develop theoretical and computational models of wind turbines with distributed TMDs as the means for passive vibration control. Methods for the efficient prediction of wind turbine tower aeroelastic excitations will be developed.

    The project will perform the fundamental task of quantifying second-order aerodynamic effects that are currently ignored in design codes, while also developing a predictive modelling technique that is computationally efficient. Aerodynamic loads resulting from blade rotation, crosswinds, and, vortex shedding, are not considered in most dynamic models of wind turbines. In this PhD project, these complex aerodynamic loads will be quantified (experimentally and numerically) and coupled with lumped-parameter and finite-element models of the turbine.

This staff member is a UQ Expert for media in the following fields:

Stress Analysis, Vibration and Dynamics, Fatigue Failures

They are happy to lend their expertise to your articles or broadcasts and share their research discoveries and insights with the community via media channels.

For additional assistance with story ideas, general advice and information or help with seeking further experts, please email the UQ Media Team or telephone (07) 3365 1120.

Links

ORCID: 0000-0002-9536-6632

Scopus ID: 55544707300

Google Scholar ID: a7kwsE4AAAAJ

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