Creep test coupon for metal matrix composites

Details Creep test coupon for metal matrix composites Creep test coupon for metal matrix composites

1991-03-04

1994-02-08

Raevis, Robert

Measuring and testing

Specimen stress or strain, or testing by stress or strain...

By loading of specimen

73826, G01N 308

Patent

active

052840638

ABSTRACT:
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.

REFERENCES:
patent: 2831342 (1958-04-01), Adler et al.
patent: 4378702 (1983-04-01), Meier
patent: 4895750 (1990-01-01), Pratt
patent: 5036577 (1991-08-01), Swank
patent: 5083465 (1992-01-01), Myers

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