Flat end diamond loading probe for fiber push-out apparatus

Details Flat end diamond loading probe for fiber push-out apparatus Flat end diamond loading probe for fiber push-out apparatus

1993-07-06

1995-07-04

Gregory, Bernarr E.

Measuring and testing

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

By loading of specimen

73 85, 73661, 73841, 73844, 73845, G01N 324

Patent

active

H00014567

ABSTRACT:
A novel loading probe for fiber-matrix testing machines is made of diamond and has a truncated cone end for push-in and push-out tests of fibers in a fiber-matrix composite. The diameter of the probe body or shaft is greater than the diameter of the fiber to be pushed and the flat surface where the cone is truncated is at least one-half the diameter of the fiber. The included angle of the truncated cone is in the range of 55.degree. to 90.degree.. A useful compromise included angle is 70.degree..

REFERENCES:
patent: 4747310 (1988-08-01), Collins et al.
patent: 4844781 (1989-07-01), Sanchez et al.
patent: 4948758 (1990-08-01), Beall et al.
patent: 5106680 (1992-04-01), King et al.
R. J. Kerans et al, "Theoretical Analysis of the Fiber Pullout and Pushout Tests", J. Am. Ceram. Soc. vol. 74, No. 7, pp. 1585-1596 (1991).

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