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The acoustic performance of multifunctional aluminium foam panels has been studied in this paper. The closed cell
foam structure was perforated using hole drilling techniques to produce an open cell structure for use in acoustic
applications. Opening the cell structure allows permeability through the foam, thus improving acoustic absorption. The
study analyzes the effects of hole size, perforation ratio and foam surface skin on acoustic performance. Mechanical
testing was conducted to quantify the reduction in stiffness and strength of the perforated aluminum foam structure.
Finally, optimal parameters for use in stiff automotive panel applications are identified.
Joe McRae,Hani E. Naguib, andNoureddine Atalla
"Acoustic performance and compression behaviour of perforated aluminium foam", Proc. SPIE 6929, Behavior and Mechanics of Multifunctional and Composite Materials 2008, 69290W (2 April 2008); https://doi.org/10.1117/12.776467
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Joe McRae, Hani E. Naguib, Noureddine Atalla, "Acoustic performance and compression behaviour of perforated aluminium foam," Proc. SPIE 6929, Behavior and Mechanics of Multifunctional and Composite Materials 2008, 69290W (2 April 2008); https://doi.org/10.1117/12.776467