US 12,136,407 B2
Sandwich-structured panels and method of manufacture
Ninad Joshi, Brampton (CA); and Sid-Ali Meslioui, Brossard (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Nov. 2, 2020, as Appl. No. 17/086,579.
Prior Publication US 2022/0139364 A1, May 5, 2022
Int. Cl. G10K 11/168 (2006.01); B29C 65/08 (2006.01); B32B 3/12 (2006.01); B32B 3/26 (2006.01); B32B 37/00 (2006.01); B32B 37/06 (2006.01); B32B 37/14 (2006.01); B32B 37/18 (2006.01)
CPC G10K 11/168 (2013.01) [B32B 3/12 (2013.01); B32B 3/266 (2013.01); B32B 37/0076 (2013.01); B32B 37/06 (2013.01); B32B 37/146 (2013.01); B32B 37/18 (2013.01); B29C 65/08 (2013.01); B32B 2305/02 (2013.01); B32B 2307/102 (2013.01); B32B 2310/028 (2013.01); B32B 2605/18 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method of manufacturing a sandwich-structured panel, the method comprising:
receiving an annular base having a radially-inner side defining a recess;
receiving a first skin, a second skin and a cellular core;
ultrasonically welding the first skin to the radially-inner side of the annular base so that a main portion of the first skin is received into the recess and a peripheral portion of the first skin outside of the main portion is welded to a peripheral portion of the annular base outside of the recess;
after ultrasonically welding the first skin to the radially-inner side of the annular base, assembling the cellular core with the first and second skins so that:
the cellular core is disposed between the first and second skins;
the peripheral portion of the first skin is disposed outside a periphery of the cellular core; and
the second skin has a peripheral portion disposed outside the periphery of the cellular core and facing the peripheral portion of the first skin, the peripheral portion of the second skin being adjacent the peripheral portion of the first skin;
ultrasonically welding the peripheral portion of the first skin and the peripheral portion of the second skin together; and
ultrasonically welding the second skin to the cellular core.