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Title of the thesis: Vibration mitigation methods for industrial machinery

Thesis defender: Samuli Rytömaa 
Opponent: Prof. Jan-Olov Aidanpää, Luleå University of Technology, Sweden
Custos: Prof. Raine Viitala, Aalto University School of Engineering

Excessive vibrations are a common problem in industrial machinery. They can lead to equipment failures, reduced production quality, and discomfort for operators. For this reason, vibration control is essential to avoid unnecessary production downtime, quality variations, and occupational health issues. At the same time, the green transition calls for more efficient production with fewer resources. One way to meet this demand is to operate machines over a wider speed range, but this also increases the risk of vibration-related problems. Traditional vibration control methods are not sufficiently effective in this changing operating environment.

This doctoral dissertation examined advanced vibration control methods that can be applied to industrial-scale machinery and demanding operating environments. These methods offer a wider operating range than traditional solutions. The dissertation presents a simple modeling method for the vibration behavior of wire rope isolators. The use of wire rope isolators has increased significantly in Finnish industry. In addition, the work investigated a tuned mass damper based on wire rope isolators, which can operate over a wider range than conventional tuned mass dampers. Finally, the dissertation introduces a path-planning-based control method for devices that can modify the vibration behavior of machines. All the methods presented in the dissertation can be directly applied in practical machine design.

This doctoral research provides new tools for designing more durable, quieter, and more reliable industrial machinery. 

Thesis available for public display 7 days prior to the defence at . 

Contact information: samuli.rytomaa@aalto.fi