Sound absorption and transmission loss properties of open-celled aluminum foams with stepwise relative density gradients

@article{Lomte2022SoundAA,
  title={Sound absorption and transmission loss properties of open-celled aluminum foams with stepwise relative density gradients},
  author={Amulya Lomte and Bhisham Sharma and Marie Drouin and Denver Schaffarzick},
  journal={Applied Acoustics},
  year={2022}
}

References

SHOWING 1-10 OF 55 REFERENCES
Preparation and Characterization of Gradient Compressed Porous Metal for High-Efficiency and Thin-Thickness Acoustic Absorber
TLDR
The developed high-efficiency and thin-thickness acoustic absorber of gradient compressed porous metal can be applied in acoustic environmental detection and industrial noise reduction.
Sound absorption of cellular metals with semiopen cells.
TLDR
A combined experimental and theoretical study is presented for the feasibility of using aluminum foams with semiopen cells for sound-absorption applications, with emphasis on revealing the correlation between sound absorption and morphological parameters such as pore size, pore opening, and porosity.
Acoustic absorption properties of open-cell Al alloy foams with graded pore size
By adjusting the size of preform particles and their stacking routes, the open-cell Al alloy foams with graded pore size were prepared by the melt infiltration method. The effects of pore structures
Optimized acoustic properties of cellular solids
The optimized cell size and shape, cell size variations, sample thickness, and air cavity depth behind the sample for best sound absorption performance of air-filled porous materials having simple
Influences of Compression Ratios on Sound Absorption Performance of Porous Nickel–Iron Alloy
The improvement of sound absorption performance of porous metal is a focus of research in the field of noise reduction. Influences of compression ratios on sound absorption performance of a porous
ACOUSTIC ABSORPTION CHARACTERISTICS OF FOAMED ALUMINUM
The acoustic absorption characteristics of foamed aluminum and the effect of its structural parameters on the characteristics have been investigated. The results indicate that the acoustic absorption
Assessment of Soft Vane and Metal Foam Engine Noise Reduction Concepts
Two innovative fan-noise reduction concepts developed by NASA are presented - soft vanes and over-the-rotor metal foam liners. Design methodologies are described for each concept. Soft vanes are
Passive control of centrifugal fan noise by employing open-cell metal foam
Prediction of aerodynamic noise reduction by using open-cell metal foam
Dynamic tortuosity and bulk modulus in air‐saturated porous media
In this paper, the concept of characteristic length introduced in the definition of the dynamic tortuosity by Johnson, Koplik, and Dashen [J. Fluid Mech. 176, 379 (1987)] is extended to express the
...
...