Stock material or miscellaneous articles – Composite – Of epoxy ether
Reexamination Certificate
2006-01-24
2006-01-24
Dixon, Merrick (Department: 1774)
Stock material or miscellaneous articles
Composite
Of epoxy ether
C428S414000, C428S406000, C428S172000, C428S212000, C428S220000, C428S295100, C428S297100, C428S332000
Reexamination Certificate
active
06989197
ABSTRACT:
A polymer composite structure having resin matrix interlayers reinforced with shape memory alloy (SMA) particles. In one preferred form Nitinol® alloy particles are used for the SMA particles. The Nitinol® alloy particles may comprise cylindrical, oval or spherical shaped particles and are intermixed in the resin of the resin matrix interlayer(s) of the composite structure. The SMA particles provide superelastic, reversible strain properties that significantly improve the damage resistance, damage tolerance (e.g. compression-after-impact (CAI) strength) and elevated temperature performance of the composite structure without negatively affecting the hot-wet compression strength of the composite structure. The polymer composite structure is ideally suited for aerospace and aircraft applications where lightweight and structurally strong materials are essential.
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Dixon Merrick
Harness & Dickey & Pierce P.L.C.
The Boeing Company
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