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US 5,284,063 AGranted
Creep test coupon for metal matrix composites
AssigneeRockwell International Corporation
InventorKenneth J. Newell
Life of this patent
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AssigneeRockwell International Corporation
InventorKenneth J. Newell
Estimating the term…
A test coupon for metal matrix composites is provided with means for structurally isolating the reinforcing fibers in the gage section from the reinforcing fibers in the clamped end regions of the coupon, when the latter is subjected to creep testing, so that the results of creep testing can be more accurately indicative of the creep properties associated with the fiber-reinforced metal matrix composite material in the coupon gage section. More particularly, the test coupon of the invention is provided with a plurality of slots or cut-out regions disposed in a section located between the clamped end regions and the centrally located gage section. The plurality of slots, which can be provided in longitudinally and/or laterally staggered arrays, effectively causes structural isolation of the reinforcing fibers in the gage section from the clamped reinforcing fibers located in the end regions of the coupon.
A test coupon for structural testing of fiber-reinforced metal matrix compound materials, said coupon comprising:
A fiber-reinforced metal matrix compound material coupon for conducting creep testing, said coupon comprising:
A method of structurally isolating a gage portion of a fiber reinforced MMC test coupon from clamp portions of the coupon, said gage portion having a longitudinal axis with a predetermined length, said clamp portions being adapted for clamping engagement within gripping jaws of a test fixture, said method comprising:
Dependencies are inferred from the claim text.