Acoustic foam with structural properties
Noise reduction is an issue that is raising great awareness in the sectors of construction, transport and above all aeronautics. However, current noise attenuation systems are either very expensive or do not provide good enough acoustic properties with respect to their weight or structural effectiveness.
Prof. Annie Ross and her team have mastered these challenges by developing an open cell thermoset foam with both very interesting acoustic absorption and mechanic properties. In addition, the process allows for gradient or mixture of porosities able to absorb a broad range of frequencies, as well as a complete control of both porosity ratio and cell-size.