Toyota Motor Engineering & Manufacturing North America, Inc.

Takayuki Sugiyama

Takumi J Jinmon

Tai-Yun Huang

Gaohua Zhu

Yeongching Lin

An acoustic unit includes an acoustically septumized cell, and a vapor chamber attached across the cell. The vapor chamber is configured to employ vapor-liquid phase changing to help move heat past the cell.

Acoustic panel with vapor chambers

An acoustic panel includes a plurality of acoustic units. Each acoustic unit includes a subwavelength cell, an acoustic septum attached across the cell and an acoustic backing attached across the cell behind the acoustic septum. The acoustic units have uniform constructions with the exception of varying cross-sectional dimensions, and varying peak absorption frequencies based on the varying cross-sectional dimensions. In relation to the peak absorption frequency for each acoustic unit, the acoustic septum is a vibratory membrane and the acoustic backing is an anti-vibration back plate, and the acoustic unit is acoustic impedance matched, whereby the acoustic unit is configured to substantially non-propagatively absorb frontal acoustic excitation at the peak absorption frequency using the acoustic septum and the acoustic backing.

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Ann Arbor, MI, United States of America

Takayuki Sugiyama