Early crack detection

Details Early crack detection Early crack detection

Filed on

1978-03-20

Date issued

1979-03-27

Examiner

Swisher, S. Clement

Patent Class

Measuring and testing

SubClass

With fluid pressure

SubSubClass

Dimension, shape, or size

Other Related Categories

G01M 304

Type

Patent

Status

active

Patent number

041459156

Description

ABSTRACT:
Early detection of cracks in non-permeable, structural members subject to stress is effected before the cracks traverse the member by:

REFERENCES:
patent: 2185315 (1940-01-01), Rogatchoff
patent: 3299417 (1967-01-01), Sibthorpe
patent: 3820381 (1974-06-01), Thurston

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