Doctoral Researcher, M.Sc.
Intelligent Machines and Systems (Mechatronics and Machine Diagnostics)
Faculty of Technology
University of Oulu
- Fractional order of regularity of vibration signals
- Modelling and measurements of vibrations in epicyclic gearboxes
- Statistical pattern recognition of different faults states
- Fourier and wavelet analysis
- Pointwise and uniform Hölder regularity estimation
- Numerical fractional calculus
- Cyclostationary random signals and envelope analysis
- Vibrations in hot metal desulfurization
- Vibrations and audio in basic oxygen steelmaking
- Vibrations in vacuum tank degassing
- Mold oscillation in continuous casting
K. Karioja, R.-P. Nikula, J. Nissilä: Cyclostationarity and real order derivatives in roller bearing fault detection,
Measurement Science and Technology, 35(9): 096136, 2024
https://urn.fi/URN:NBN:fi:oulu-202408205500
https://doi.org/10.1088/1361-6501/ad4e57
J. Nissilä, M. Pylvänäinen, V.-V. Visuri, P. Ruotsalainen, J. Laurila, A. Rankinen, T. Palovaara, T. Liedes:
Vibration and Audio Measurements in the Monitoring of Basic Oxygen Furnace Steelmaking,
Metallurgical and Materials Transactions B, 2023
https://urn.fi/URN:NBN:fi-fe20230904116474
https://doi.org/10.1007/s11663-023-02859-5
J. Nissilä, M. Pylvänäinen, J. Laurila, S. Ollila, V.-V. Visuri, T. Liedes:
Detecting Gas Injection Problems in Vacuum Tank Degassing Using Measurements of Multiple Variables,
in Proceedings of the 5th International Conference on Maintenance, Condition Monitoring and Diagnostics, MCMD 2021
https://urn.fi/URN:NBN:fi-fe20230831114563
https://doi.org/10.1007/978-981-99-1988-8_3
E. Juuso, K. Karioja, J. Nissilä: Real Order Derivatives and Spectral Norms in Fault Detection,
in Proceedings of the 5th International Conference on Maintenance, Condition Monitoring and Diagnostics, MCMD 2021
https://urn.fi/URN:NBN:fi:oulu-202411296968
https://doi.org/10.1007/978-981-99-1988-8_9
M. Pylvänäinen, J. Nissilä, V.-V. Visuri, J. Laurila, A.H. Niemi, S. Tuomikoski, T. Paananen, T. Liedes:
Effect of Gas Forming Compounds on the Vibration of a Submerged Lance in Hot Metal Desulfurization,
steel research international, 2300072, 2023
https://urn.fi/URN:NBN:fi-fe20231012139874
https://doi.org/10.1002/srin.202300072
J. Nissilä, J. Laurila, K. Ruotsalainen, T. Liedes: Bearing Defect and Misalignment Diagnostics using Local Regularity and Sparse Frequency Analysis,
in Proceedings of The First SIMS EUROSIM Conference on Modelling and Simulation, SIMS EUROSIM 2021,
and 62nd International Conference of Scandinavian Simulation Society, SIMS 2021, 21.09. - 23.09.2021, Virtual Conference, Finland
https://urn.fi/URN:NBN:fi-fe2022050332200
https://doi.org/10.3384/ecp21185171
K. Karioja, E. Juuso, J. Nissilä: Some further studies about generalised spectral norms,
Insight - Non-Destructive Testing and Condition Monitoring, 63(6): pp 362-369, June 2021
http://urn.fi/urn:nbn:fi-fe2023020125362
https://doi.org/10.1784/insi.2021.63.6.362
M. Pylvänäinen, V.-V. Visuri, J. Nissilä, J. Laurila, K. Karioja, S. Ollila, T. Fabritius, T. Liedes:
Vibration-Based Monitoring of Gas-Stirring Intensity in Vacuum Tank Degassing,
steel research international, 91(6): 1900587, 2020
https://urn.fi/URN:NBN:fi-fe2020091469407
https://doi.org/10.1002/srin.201900587
J. Nissilä, J. Laurila: Diagnosing simultaneous faults using the local regularity of vibration signals,
Measurement Science and Technology, 30: 045102, 2019
https://urn.fi/urn:nbn:fi-fe202001131835
https://doi.org/10.1088/1361-6501/aaf8fa
J. Nissilä: Error analysis of numerical Weyl fractional derivatives in the case of certain Hölder continuous functions,
in Proceedings of The 14th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications,
MESA 2018, 2. – 4.7.2018, Oulu, Finland
https://urn.fi/urn:nbn:fi-fe2018091035359
https://doi.org/10.1109/MESA.2018.8449193
J. Nissilä: Local regularity analysis with wavelet transform in gear tooth failure detection,
Management Systems in Production Engineering, 25(3): pp 176-182, 2017
https://urn.fi/URN:NBN:fi-fe2017101750118
https://doi.org/10.1515/mspe-2017-0026
and in Proceedings of Maintenance Performance Measurement and Management, MPMM 2016, 28.11.2016, Luleå, Sweden
J. Nissilä, E. Juuso: Extracting Vibration Severity Time Histories From Epicyclic Gearboxes,
in Proceedings of The 9th Eurosim Congress on Modelling and Simulation, EUROSIM 2016, 12. – 16.09.2016, Oulu, Finland
https://urn.fi/URN:NBN:fi-fe202001131839
https://doi.org/10.3384/ecp17142422
J. Nissilä: Stress evaluation of a guillotine cutter with steels of varying yield strength and thickness using displacement and snap signals,
in Proceedings of Maintenance, Condition Monitoring and Diagnostics, Maintenance Performance Measurement and Management,
MCMD 2015 and MPMM 2015, 30.09. – 01.10.2015, Oulu, Finland
https://urn.fi/urn:nbn:fi-fe2018091835974
J. Nissilä, S. Lahdelma, J. Laurila: Condition monitoring of the front axle of a load haul dumper with real order derivatives and generalised norms,
in Proceedings of The 11th International Conference on Condition Monitoring and Machinery Failure Prevention Technologies,
CM 2014 and MFPT 2014, 10. – 12.06.2014, Manchester, UK
https://urn.fi/urn:nbn:fi-fe2018091835968
https://www.researchgate.net/publication/286767140
J. Nissilä: Fourier decay of absolutely and Hölder continuous functions with finitely or infinitely many oscillations,
2nd version of the preprint available
https://arxiv.org/abs/1805.02445v2