Modelling based radiography for NDE of subsea pipelines | Zendy

Misty I. Haith | Zendy; Uwe Ewert | Zendy; Stefan Hohendorf | Zendy; Carsten Bellon | Zendy; A. Deresch | Zendy; Peter Huthwaite | Zendy; M. J. S. Lowe | Zendy; Uwe Zscherpel | Zendy

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Modelling based radiography for NDE of subsea pipelines

Author(s) -

Misty I. Haith,

Uwe Ewert,

Stefan Hohendorf,

Carsten Bellon,

A. Deresch,

Peter Huthwaite,

M. J. S. Lowe,

Uwe Zscherpel

Publication year - 2016

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.4940575

Subject(s) - subsea , calibration , noise (video) , pipeline transport , pipeline (software) , computer science , signal to noise ratio (imaging) , signal (programming language) , image resolution , intensity (physics) , simulation software , contrast (vision) , software , acoustics , artificial intelligence , optics , image (mathematics) , engineering , marine engineering , mechanical engineering , mathematics , telecommunications , statistics , physics , programming language

This work presents the use of limited experimental measurements to develop a set of calibrated simulation parameters that can then be used for reliable simulation of subsea pipeline inspections. The modelling software aRTist is used as the simulation tool, and the calibration is through comparison with experimental images of a well characterised sample in a water tank. Image quality parameters such as signal-to-noise ratio, contrast and basic spatial resolution are compared with the aim of matching simulated values to experimental results. Currently the model is partially calibrated, with signal-to-noise ratio successfully matched while differences are still found in contrast-to-noise ratio comparisons. This means that measurements depending on absolute intensity are not accurate enough in the simulation at this stage. However, the simulation is found to be accurate for wall thickness measurements in tangential images, which are not based on absolute intensity, with simulated and experimental cases produc...

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