Studies on Vibration Energy Harvesting Using a Cantilever Beam with a Modified Acoustic Black Hole Cavity

It is well known that Vibration Energy Harvesting (VEH) has applications to power microdevices and sensors. Typically, VEH is done using a cantilever beams with piezoelectric material application. Recently studies are being carried out on the use of Acoustic Black Hole (ABH) to control vibration response of structures. It is also known that there is an increase of vibration energy at the location of an ABH due to the reduction of wave speed. This paper presents the studies are conducted on the performance evaluation of VEH from cantilever beams using ABH cavities. The cantilever beams are 3D printed with modified cavities. The studies show an increase in the efficiency of the vibration energy harvested using such structures.