ULTRASONIC TRANSDUCERS CALIBRATION SYSTEM WITH 3D PROCESSING AUGUR 5.4
This paper describes ultrasonic transducers calibration system AUGUR 5.4 developed in Scientific and Production Center ECHO+. AUGUR 5.4 is a new generation of calibration systems developed since 1991. The system allows measuring or calculating most part of contact and immersion probes parameters which described in European Standard EN 12688-2. Main system feature is based on use of scanning device with two axes and single hemispherical test block (for contact probes) and small ball-type reflectors (for immersion probes). Single measurement on hemispherical block with pulse-echo technique allows calculating of all pulse parameters (pulse shape, pulse spectrum, sensitivity), probe index, beam axis offset, beam and squint angle, angles of divergence. The principle of full 3D directivity pattern calculation (therefore beam and divergence angles in any plane) based on calculation of multiple-frequency holograms of omnidirectional source (FT-SAFT framework). Distance-amplitude curves could be calculated numerically with discrete model of probes crystal and set of flat bottom reflectors.
probe verification probe calibration FT-SAFT ultrasonic transducer ultrasonictesting probe parameters
Andrey E. BAZULIN Evgeny G. BAZULIN Dmitry S. TIKHONOV Аlexey Kh. VOPILKIN
SPC ECHO+, Moscow, Russia
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
1393-1398
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）