Process for producing a crack in a tube

Details Process for producing a crack in a tube Process for producing a crack in a tube

1982-11-04

1984-07-31

Ciarlante, Anthony V.

Measuring and testing

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

By loading of specimen

G01N 128

Patent

active

044622600

ABSTRACT:
The present invention relates to a process for producing a crack in a tube.
The tube is placed in a groove made in a support, a load is applied by means of a plate disposed along a generatrix of the tube in order to start a crack and permit the propagation thereof. Load application is stopped when the crack has reached the desired dimensions.
Application is to the production of faults having a controlled size in a tubular member.

REFERENCES:
patent: 3421365 (1969-01-01), Dean et al.
P. F. Packman et al., "Definition of Fatigue Cracks Through Nondestructive Testing," J. of Materials, vol. 4, #3, (Sep. 1969), pp. 666-700.
V. A. Vinokurov et al., "Determining Properties of Pipe Metal During Failure with a Specified Crack Velocity," Ind. Lab., vol. 46, #9, (Sep. 1980), pp. 984-986.

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