Fatigue strengthened composite article

Details Fatigue strengthened composite article Fatigue strengthened composite article

1986-08-04

1989-03-28

Bennet, Henry A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

204 23, C25D 700

Patent

active

048159409

ABSTRACT:
A composite article includes a compressively stressed plating which provides increased static strength and fatigue life. In particular, a fan exit guide vane (1), made of a graphite fiber reinforced composite material and including a conductive plating (7), achieves a 380% increase in static load capability over an unplated composite vane and a low cycle fatigue life of over 1 million cycles through the application of a compressively stressed nickel plating (8) which produces a residual compressive stress state of between -5,000 and -15,000 psi.

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patent: 3895922 (1975-07-01), Phillips
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Technical Report AFML-TR-70-111, by James H. Weaver, Electrodeposited Nickel Coatings for Erosion Protection, Jul. 1970.

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