Towards semi-automated non-destructive evaluation

11th Anglo-French Physical Acoustics Conference

Fradkin, L.^1 ; Zernov, V.^1,6 ; Elston, G.^2 ; Taneja, R.^2 ; Bell, I.^3 ; Lines, D.^4 ; Wharrie, J.^4 ; Fitzgerald, P.^5

Sound Mathematics Ltd., 11 Mulberry Close, CB4 2AS Cambridge, United Kingdom^1

Doosan Power Systems, Porterfield Road Renfrew, PA4 8DJ, United Kingdom^2

National Instruments, Measurement House, Newbury Business Park, London Road, Newbury, Berkshire RG14 2PZ, United Kingdom^3

Diagnostic Sonar Ltd., Kirkton Campus, Baird Road, EH54 7BX Livingston, United Kingdom^4

LabVIEW Certified Developer, Lewkenors Mill, Bury St Edmunds Denham, Suffolk IP29 5EF, United Kingdom^5

SmartOdds, 53-79 Highgate Road, NW5 1TL London, United Kingdom^6

关键词: Hardware and software;    Large planar flaws;    Linear phased arrays;    Model-based OPC;    National Instruments;    Non destructive evaluation;    Reasonable accuracy;    Ultrasonic transducer array;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/457/1/012008/pdf
DOI  :  10.1088/1742-6596/457/1/012008

来源: IOP

【 摘 要 】

A demonstrator has been developed showing feasibility of semi-automatic characterisation of large planar flaws in steel using ultrasonic transducer arrays. The unit is based on a real-time ultrasonic imager deploying National Instruments hardware and software, is connected to an IMASONIC linear phased array containing 128 elements and incorporates a novel flaw characterisation algorithm, which is a model-based variant of Total Focusing Method, taking into account undulations in inspection surface. It has been shown to process RF data collected in immersion reasonably fast and be capable of detecting and characterising with reasonable accuracy large planar defects.