Stock material or miscellaneous articles – Structurally defined web or sheet – Including aperture
Patent
1995-01-11
1996-03-19
Watkins, III, William P.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including aperture
428139, 428137, B32B 324
Patent
active
055002722
ABSTRACT:
Thin perforated sheets of titanium are interleaved between adjacently situated graphite/epoxy plies--in the area where metal fittings are to be installed. Epoxy flows through these perforations so as to achieve a gripping mechanism between the titanium sheet and the graphite/epoxy plies. The result is efficient transfer of load in the titanium to the composite fiber materials without suffering the cost penalty of extensive graphite/epoxy buildups (without interleaved titanium sheets). Epoxy plugs within the titanium sheet perforations bond to confronting surfaces of the graphite/epoxy plies and provide a fail safe gripping mechanism between the titanium sheet and adjacent graphite/epoxy plies to allow for the load transfer between the titanium sheet and the graphite/epoxy plies in the unlikely event that the shear bond between the faces of the titanium sheet and the graphite/epoxy plies becomes completely disbonded.
REFERENCES:
patent: 3711934 (1973-01-01), Zorowski et al.
patent: 4229473 (1980-10-01), Elber
Anderson Terry J.
Hoch Jr. Karl J.
Northrop Grumman Corporation
Watkins III William P.
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