Theoretical and experimental estimation to models DGS curve and influences of the delay on accuracy of the determination parameter reflector when testing transducer array probe

Speaker:
voronkova, luibov; JSC RPA “CNIITMASH”; Russian Federation

Authors:
Danilov, V.N.; JSC RPA “CNIITMASH”,; Russia
Voronkova, L.V.; JSC RPA “CNIITMASH”,; Russia
Mirchev, Y.N.; Institute of mechanics – BAS; Bulgaria
Mihovski, M.M.; Institute of mechanics – BAS; Bulgaria
Chukachev, P.H.; Multitest Ltd; Bulgaria

ID: ECNDT-0061-2018
Download: PDF
Session: Applied PAUT 1
Room: G2
Date: 2018-06-14
Time: 14:10 - 14:30

Theoretical and experimental estimation to models DGS curve and influences of the delay on accuracy of the determination parameter reflector when testing transducer array probe

V.N.Danilov1, L.V.Voronkova1 , Y.N.Mirchev2, M.M.Mihovski2, P.H.Chukachev3

1 JSC RPA “CNIITMASH”, Russia, vadnicdan@yandex.ru, voronkova-lv@yandex.ru
2 Institute of mechanics – BAS, Bulgaria, mirchev@imbm.bas.bg, nntdd@abv.bg
3 “Multitest” Ltd, Bulgaria, multitest@multitest.bg

Happen to the models a calculation DGS-curve for normal transducer array probe (TAP) with square-wave lattice depending on size of the reflector and wave number array. Parallel was conducted experiment without focusing and at focusing for row of the distances: 15mm, 30mm, 45mm and 60mm in immersion variant with cognate parameter TAP and reflectors. The Results calculation in far-field was compared with experimental.
The Influence of the delay on shaping the signal normal TAP with linear array, got for model of the bottom signal, was experimental is confirmed for focal length 45 mms and amount active element 32.
The Focal length influences upon amplitude of the reflected signal, this follows from result calculation and experiment that allows to prototype the possibility of the revealing the inadmissible reflectors for definite focusing. The Counted maximum of the bottom signal at focusing in each point of the acoustic axis, theoretical curves is matched with experimental for TAP with active focusing.

Key Words: transducer array probe, DGS curve, focusing, parameter reflector.

Classify paper: ultrasonic method, theoretical, full paper.