Acoustic panel core with multi-material and/or multi-layered construction

1. An acoustic panel, comprising:

a perforated first skin;

a second skin; and

a corrugated structure between and connected to the perforated first skin and the second skin, the corrugated structure including a first baffle, a first septum, first material and second material configured with the first material;

the first baffle formed by an uninterrupted portion of the first material; and

the first septum formed by a portion of the second material that is exposed through an interruption in the first material;

wherein the corrugated structure includes a layer of the first material and a layer of the second material that is laid up with and attached to the layer of the first material; wherein the corrugated structure further includes a layer of third material; the layer of the second material is sandwiched between the layer of the first material and the layer of the third material; the first baffle is further formed by an uninterrupted portion of the third material; and the portion of the second material is further exposed through an interruption in the third material.

2. The acoustic panel of claim 1 , wherein

the first material comprises non-porous material; and

the second material comprises porous material.

3. The acoustic panel of claim 1 , wherein the second material comprises mesh.

4. The acoustic panel of claim 1 , wherein the second material comprises thermoplastic material.

5. The acoustic panel of claim 1 , wherein

the first septum has a first dimension in a first direction; and

the layer of the second material has a second dimension in the first direction that is equal to the first dimension.

6. The acoustic panel of claim 1 , wherein

the first septum has a first dimension in a first direction; and

the layer of the second material has a second dimension in the first direction that is less than the first dimension.

7. The acoustic panel of claim 1 , wherein an entirety of a face the first baffle is formed by the uninterrupted portion of the first material.

8. The acoustic panel of claim 1 , wherein a face of the first septum is at least partially formed by the portion of the second material.

9. The acoustic panel of claim 8 , wherein the face of the first septum is further formed by a second portion of the first material that defines the interruption through which the portion of the second material is exposed.

10. The acoustic panel of claim 1 , wherein

a face of the first septum has a face area; and

the interruption in the first material has a cross-sectional second area that is at least one half of the face area.

11. The acoustic panel of claim 1 , wherein the first septum is further formed by a second portion of the second material that is exposed through a second interruption in the first material.

12. The acoustic panel of claim 1 , wherein

the corrugated structure further includes a second baffle;

a chamber extends from the perforated first skin, along the first baffle and the second baffle, to the second skin;

the first septum divides the chamber into a first cavity and a second cavity; and

the second cavity is fluidly coupled with the first cavity through one or more apertures the first septum.

13. The acoustic panel of claim 12 , further comprising:

a plurality of sidewalls between and connected to the perforated first skin and the second skin, the plurality of sidewalls including a first sidewall and a second sidewall;

the chamber extending from the first sidewall, along the first baffle and the second baffle, to the second sidewall.

14. The acoustic panel of claim 1 , wherein

the first baffle is connected to the first septum;

the first baffle extends between the perforated first skin and the second skin; and

the first septum extends between the perforated first skin and the second skin.