title: Subwavelength acoustic metamaterial panels for underwater noise isolation.
abstract: Acoustically thin metamaterial underwater noise isolation panels have been developed that provide as much as 16 dB of noise isolation for a panel with a thickness just 160th of the wavelength in the host medium (fresh water) at 2.5 kHz. The panels are composed of thin layers of neoprene rubber and polyoxymethylene containing air-filled voids. The level of isolation provided by the panels is shown to correlate positively with the volume fraction of air voids within the panel.
authors.affiliation: Applied Research Laboratories and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA a.jean.hicks@utexas.edu, haberman@arlut.utexas.edu, pswilson@mail.utexas.edu.
authors.forename: Ashley J
authors.initials: AJ
authors.lastname: Hicks
authors.affiliation: Applied Research Laboratories and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA a.jean.hicks@utexas.edu, haberman@arlut.utexas.edu, pswilson@mail.utexas.edu.
authors.forename: Michael R
authors.initials: MR
authors.lastname: Haberman
authors.affiliation: Applied Research Laboratories and Department of Mechanical Engineering, The University of Texas at Austin, Austin, Texas 78712, USA a.jean.hicks@utexas.edu, haberman@arlut.utexas.edu, pswilson@mail.utexas.edu.
authors.forename: Preston S
authors.initials: PS
authors.lastname: Wilson