Method and apparatus for determining crack initiation and propag

Details Method and apparatus for determining crack initiation and propag Method and apparatus for determining crack initiation and propag

1986-01-03

1987-12-08

Myracle, Jerry W.

Measuring and testing

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

By loading of specimen

738656, G01N 1900

Patent

active

047111313

ABSTRACT:
A method and apparatus for determining crack initiation and propagation in metals subjected to environmental conditions encountered in drilling deep wells wherein strain sensors are used to measure crack initiation and propagation so that a prediction can be made about the life expectancy of the metal in actual operating conditions.

REFERENCES:
patent: 2986928 (1961-06-01), White
patent: 4075886 (1978-02-01), Barker
patent: 4152941 (1979-05-01), Abou-Sayed et al.
patent: 4179940 (1979-12-01), Oertle et al.

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