Örjan Johansson
Örjan Johansson

Örjan Johansson

Professor and Head of Subject, Chaired Professor
Luleå University of Technology
Engineering Acoustics
Operation, Maintenance and Acoustics
Department of Civil, Environmental and Natural Resources Engineering
orjan.johansson@ltu.se
+46 (0)920 491386
F711 Luleå

Örjan Johansson holding the position as chair professor in Engineering Acoustics at Luleå University of Technology. The research group works in the areas of Architectural & Building Acoustics; Sound & Vibration Quality; and Ultrasound & Acoustic Cavitation. Research is applied within the Built Environment and the Process and Automotive Industry. Current projects are on 'Process intensification by acoustic and hydrodynamic cavitation', 'Sound and vibration performance of timber buildings', 'Sound design of living and work environments', and 'Transfer path analysis for Automotive NVH'.

My educational background is within Mechanical Engineering, MSC 1989. I got my PhD 1996 in Physical Environment Technology, and became Associate professor in Engineering Acoustics 2006. I have a broad experience in the field of sound and vibration research, linked to sound quality, transfer path analysis, and optimization and control of resonant systems. I have been supervisor or assistant supervisor for 7 doctoral dissertations, and supervisor for 20 Master Thesis’s. I also have 5 years’ experience as senior expert consultant within automotive and process industry.

Publications

Conference paper

Acoustic design principles for energy efficient excitation of a high intensity cavitation zone (2019)

Johansson. Ö, Pamidi. T, Shankar. V, Löfqvist. T
Part of: Proceedings of the 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019, ICA 2019, 9 - 13 September, s. 948-955, 2019
Conference paper

Comparison of Cavitation Effect in Case of Fixed and Free Fibers in an Ultrasound Beaker (2019)

Pamidi. T, Johansson. Ö, Löfqvist. T
Part of: Proceedings of the 23rd International Congress on Acoustics, integrating 4th EAA Euroregio 2019, ICA 2019, 9 - 13 September, s. 8217-8224, 2019
Article in journal

Comparison of Two Different Ultrasound Reactors for the Treatment of Cellulose Fibers (2019)

Pamidi. T, Johansson. Ö, Löfqvist. T, Shankar. V
Ultrasonics Sonochemistry
Conference paper

Energy Efficient Fibrillation of Cellulose Fibers using an Ultrasound Reactor (2019)

Pamidi. T, Johansson. Ö, Löfqvist. T
Paper presented at : Marcus Wallenberg Prize (MWP) Event 2019 – Young Researchers’ Challenge; October 6–9, 2019, Stockholm, Sweden
Conference paper

Comparison of Different Concepts of UltrasoundReactors Using Numerical Simulations (2018)

Pamidi. T, Johansson. Ö, Löfqvist. T
Paper presented at : 16th Meeting of the European Society of Sonochemistry
Conference paper

Design of a high-intensity ultrasound reactor (2017)

Johansson. Ö, Pamidi. T, Löfqvist. T
Paper presented at : 2017 IEEE International Ultrasonics Symposium (IUS),Washington, DC, 6-9 Sept. 2017
Conference paper

Design of a high-intensity ultrasound reactor (2017)

Johansson. Ö, Pamidi. T, Löfqvist. T
Part of: IEEE International Ultrasonics Symposium, IUS, IEEE Computer Society, 2017, 8091660
Conference paper

Design of high-intensity ultrasound reactor (2017)

Johansson. Ö, Löfqvist. T, Pamidi. T
Part of: IEEE International Ultrasonics Symposium, IUS, IEEE Computer Society, 2017, 8092948
Conference paper

Difference thresholds of multi-axis whole-body vibration (2016)

Wijaya. A, Johansson. Ö
Part of: IEEE International Conference on Industrial Engineering and Engineering Management, s. 1760-1764, IEEE Computer Society, 2016, 7798180