Sound absorption of metallic sound absorbers fabricated via the selective laser melting process

Li Wei Cheng, Chung-Wei Cheng*, Kuo Chun Chung, Tai-Yan Kam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The sound absorption capability of metallic sound absorbers fabricated using the additive manufacturing (selective laser melting) method is investigated via both the experimental and theoretical approaches. The metallic sound absorption structures composed of periodic cubic cells were made of laser-melted Ti6Al4 V powder. The acoustic impedance equations with different frequency-independent and frequency-dependent end corrections factors are employed to calculate the theoretical sound absorption coefficients of the metallic sound absorption structures. The calculated sound absorption coefficients are in close agreement with the experimental results for the frequencies ranging from 2 to 13 kHz.

Original languageEnglish
Article number37
JournalApplied Physics A: Materials Science and Processing
Volume123
Issue number1
DOIs
StatePublished - 1 Jan 2017

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