Journal Release: Active feedforward control of flexural waves in an Acoustic Black Hole terminated beam

ISLNE researchers have published a new journal paper: “Active feedforward control of flexural waves in an Acoustic Black Hole terminated beam”. The paper has been published with Gold Open-Access in the IOP journal Smart Materials and Structures.

The article , co-authored by Dr Jordan Cheer , Kristian Hook and Professor Steve Daley , demonstrates the performance benefits that can be obtained by integrating active control into the taper of an acoustic black hole. A wave-based feedforward control strategy was implemented to minimise the reflection coefficient and the results have shown that the performance of the active acoustic black hole was superior to the conventional constant thickness active termination. In addition, the computational resources required to implement the active acoustic black hole were lower than those required for the constant thickness active termination. This work has merged two effective vibration control methods to create a broadband and lightweight damping solution. The paper builds on the team’s previous paper published in the Journal of the Acoustical Society of America, which investigated the design of passive acoustic black holes