	US 12,233,471 B2
	Techniques for forming composite sandwich structures
Quinlan Yee Shuck, Indianapolis, IN (US); Timothy Paul Fuesting, Indianapolis, IN (US); Scott Nelson, Indianapolis, IN (US); and Raymond Ruiwen Xu, Indianapolis, IN (US)
Assigned to Rolls-Royce Corporation, Indianapolis, IN (US)
Filed by Rolls-Royce Corporation, Indianapolis, IN (US)
Filed on Nov. 30, 2021, as Appl. No. 17/537,803.
Claims priority of provisional application 63/126,952, filed on Dec. 17, 2020.
Prior Publication US 2022/0193810 A1, Jun. 23, 2022
Int. Cl. B23K 11/00 (2006.01); B21D 47/00 (2006.01); B23K 11/11 (2006.01); B23K 15/00 (2006.01); B23K 26/22 (2006.01); B23K 101/02 (2006.01)

CPC B23K 11/0093 (2013.01) [B21D 47/00 (2013.01); B23K 11/115 (2013.01); B23K 15/0006 (2013.01); B23K 15/008 (2013.01); B23K 26/22 (2013.01); B23K 2101/02 (2018.08)]

14 Claims

1. A method comprising:

positioning a plurality of supports such that the plurality of supports are between a first metallic substrate and a second metallic substrate, wherein an undulating member is located between the first metallic substrate and the second metallic substrate, the undulating member defining a plurality of first peaks adjacent to a first surface of the first metallic substrate and a plurality of second peaks adjacent to a second surface of the second metallic substrate, wherein a first support of the plurality of supports is positioned such that the first support extends between a first peak of the plurality of first peaks and the second surface of the second metallic substrate;

welding the first peak to the first surface of the first metallic substrate in an area of the first support; and

removing the first support by at least one of a thermal removal process or a chemical removal process.