Photo from wikipedia
Abstract Metallic foams with high flow resistivity are of high interest as practical sound absorption materials. Herein, we report the novel open-cell metallic foams associated with a partially-open window morphology… Click to show full abstract
Abstract Metallic foams with high flow resistivity are of high interest as practical sound absorption materials. Herein, we report the novel open-cell metallic foams associated with a partially-open window morphology between interconnected pores for improved flow resistivity and sound absorption coefficient. Such a microstructure was produced through exploiting the shear thinning behavior of the metal slurry during the template replication fabrication process. A new microstructural model for permeability simulation is also developed for the new foam to account for the increased specific surface area from the windows. Input parameters to the model include cell geometries that are accessible via morphological characterization. Results showed that metallic foams with the window morphology have significantly increased flow resistivity (1.5 times) with little loss in porosity (
Journal Title: Acta Materialia
Year Published: 2021
Link to full text (if available)
Share on Social Media: Sign Up to like & get
recommendations!