Method of making explosively bunded multi-laminar composite meta

Details Method of making explosively bunded multi-laminar composite meta Method of making explosively bunded multi-laminar composite meta

1988-11-25

1989-12-19

Godici, Nicholas P.

Metal fusion bonding

Process

Using explosive energy

228214, 228 25, B23K 2008

Patent

active

048877611

ABSTRACT:
A method of explosively bonding metal plates into a multi-laminar composite plate wherein the metal plates are assembled over a restraining means, e.g. an anvil, in overlapping spaced-apart relationship, a driver plate having a mass of at least the total mass of the plates to be bonded is disposed over the top plate of the assembly at a stand-off distance of at least half its thickness, a buffer layer of granular inert material is disposed between the driver plate and the top plate, and an explosive layer is placed on the driver plate and detonated in the direction parallel to the driver plate. The number of plates which can be bonded in a single operation can be increased by placing an explosive layer driver plate and a layer of granular inert material symmetrically on each side of an assembly of metal plates and detonating each explosive charge simultaneously. The method produces multi-laminar composite plates having improved uniformity of bond quality at the interfaces. In addition the method allows increased areas of metal plate to be bonded without producing excessive wave amplitude at the interfaces.

REFERENCES:
patent: 3397444 (1968-08-01), Bergmann et al.
patent: 3417455 (1968-12-01), Pearson
patent: 3449819 (1969-06-01), Blank
patent: 3473943 (1969-10-01), Kai
patent: 3813758 (1974-06-01), Araki
patent: 3987529 (1976-10-01), Nakagawa et al.
"NASA", SP 5925(03), p. 4, Explosive Bonded . . . Composites, USGPO, 1974.

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