Honeycomb core structure and method and apparatus relating...

Details Honeycomb core structure and method and apparatus relating... Honeycomb core structure and method and apparatus relating...

B - Operations, Transporting

21

D

B21D 39/00 (2006.01) B21D 47/00 (2006.01) B23K 26/00 (2006.01) B23K 26/08 (2006.01) B23K 26/20 (2006.01) B23K 31/02 (2006.01)

Patent

CA 2144602

A core structure (50), apparatus (170), and method which utilize laser bonding to fabricate the core structure. The core structure (50) is characterized by laser bonds (14) in patterns between adjacent sheets (20, 22, 24, 26, 28) of aluminum, stainless steel, and titanium foil which create honeycomb core structures (50) when the bonded stack of sheets is expanded by the application of tensional forces thereto. A variable density core structure (50) incorporates honeycomb cells (34) of conventional size and a higher density honeycomb core structure (60) is formed integrally with the original core structure (40). The higher density core (60) has cells (62) which are much smaller than the cells (34) of the original core structure (40). The apparatus (70) achieves the fabrication of the core structure and the steps of the method are practised by either hand or utilization of the apparatus.

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