Method for determining shape of crack

Details Method for determining shape of crack Method for determining shape of crack

1981-01-02

1982-10-12

Gill, James J.

Measuring and testing

Vibration

By mechanical waves

364507, G01N 2904

Patent

active

043532551

ABSTRACT:
AE signals due to a crack developed in a metal test object are detected by a number of AE sensors mounted on the metal test object. Based on time differences between the signals from the respective AE sensors, crack source points are determined. Then, based on the crack source points, a crack source plane is determined. The crack source plane is divided into a number of areas and a point of maximum number of crack source points in each of the areas is determined. Based on the points of maximum number of crack source points in the respective areas, a shape of the crack in the test object is determined.

REFERENCES:
patent: 3985024 (1976-10-01), Horak
patent: 4033179 (1977-07-01), Romrell

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