Abstract
The oil and gas industry is an economic branch highly dependent on metallic equipment, especially those produced with carbon steel. Often, such materials suffer from corrosion and repair with composite materials is one way of stopping this type of degradation. However, to meet manufacturing and operating codes and specifications, the metal substrate needs to be inspected routinely over its lifetime. The aim of this work is evaluate the ability of eddy current technique with external magnetic field to inspect the corrosion under composite repair. For comparison purposes, the conventional test, without using the field, was also performed. The latter, in turn, was not able to detect defects even on the thinner sheet. With the application of the external magnetic field, the wall loss equivalent to 50% was effective for substrates up to 12.7 mm thick and 5 mm repair layer.
How to Cite:
Silva, V. M., Camerini, C. G., Campos, L. B., Pereira, G. R. & d’Almeida, A. S., (2019) “Corrosion inspection under repair by eddy current with external magnetic field”, Review of Progress in Quantitative Nondestructive Evaluation .
Downloads:
Download PDF