ELECTROMAGNETIC FLAW DETECTION METHOD Russian patent published in 2000 - IPC

Abstract RU 2146047 C1

FIELD: flaw inspections in construction engineering. SUBSTANCE: method involves irradiation of part under inspection with electromagnetic signals at angle to its surface, reception of reflected electromagnetic signals, and measurement of parameters of reflected electromagnetic signals; measurement results serve as indications of flaws, if any; irradiation is made through insulating plate mounted on surface of part under inspection by means of transceiver antenna which has directivity pattern with its main lobe cosecant-shaped in one plane of one polar coordinate system and narrow directivity pattern in other plane; aperture of transceiver antenna is arranged inside insulating plate. In addition, reflected electromagnetic signals are received by first and second two-component elliptically polarizes receiving antennas whose apertures are arranged, respectively, behind and in front of transceiver antenna inside dielectric plate. EFFECT: improved accuracy, resolution, and confidence in detecting foreign metal or dielectric inclusions. 9 cl, 4 dwg

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RU 2 146 047 C1

Authors

Orlov A.B.

Orlov K.A.

Lutin Eh.A.

Zheljaeva L.Eh.

Dates

2000-02-27Published

1999-03-03Filed