Apparatus for the in-situ detection and location of flaws in wel

Details Apparatus for the in-situ detection and location of flaws in wel Apparatus for the in-situ detection and location of flaws in wel

1977-05-02

1979-03-20

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

228104, G01N 2904

Patent

active

041447662

ABSTRACT:
Apparatus for the on-line detection and location of weld flaws wherein the acoustic emissions from a fault are segregated from other acoustic emissions by recognizing those emissions from the weld zone falling within a predetermined band of frequencies and locating the fault by determining the time required for the recognized emissions to travel to two spaced apart predetermined points.

REFERENCES:
patent: 3985024 (1976-10-01), Horak
patent: 4033179 (1977-07-01), Romrell
W. D. Jolly, The Application of Acoustic Emission to In-Process Inspection of Welds, Materials Evaluation, vol. 28, No. 6, Jun., 1970, pp. 135-139.

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