Vibration and sound are closely related to our daily life.

In our laboratory, we are working on the optimal design to prevent unpleasant noise and to utilize vibration.

The following is a study of the optimal layout of sound-absorbing materials in a car interior.

We are also researching the development of powder dampers that contain metal powder inside the structure for vibration damping, taking advantage of the characteristics of metal additive manufacturing that uses powder as raw material.

Representative papers

- A. Takezawa, T. Yamamoto, X. Zhang, K. Yamakawa, S. Nakano. M. Kitamura, An objective function for the topology optimization of sound-absorbing materials, J. Sound Vib., 443 (2019) 804-819.

- A. Takezawa, M. Daifuku, Y. Nakano, K. Nakagawa, T. Yamamoto, M. Kitamura, Topology optimization of damping material for reducing resonance response based on complex dynamic compliance, J. Sound Vib., 365 (2016) 230-243.

- A. Takezawa, K. Makihara, N. Kogiso, M. Kitamura, Layout optimization methodology of piezoelectric transducers in energy-recycling semi-active vibration control systems, J. Sound Vib. 333 (2014) 327-344.