ANALYSIS OF CORROSION IN PRESSURIZED PIPELINES BY ADVANCED LASER SHEAROGRAPHY

Wan Abdullah, W.S. and Yusof, M.Y. and Ahmad Puad, A. N. and Hoque, M. E. (2009) ANALYSIS OF CORROSION IN PRESSURIZED PIPELINES BY ADVANCED LASER SHEAROGRAPHY. Engineering e-Transaction , 4 (1). pp. 51-55. ISSN 1823-6379

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Abstract

This study aims at assessing corrosion defects in standard petroleum pipelines by shearography method. Shearography reveals the stress-affected zone due to additional loading that can be realized by the laser speckle correlation on the inspected object. For this study, the artificial corrosion in pipeline was modeled by creating circular defects with different depths and sizes. An internal air pressure was exerted to the 7mm thick pipe wall. The speckle correlation for corrosion of more than 3mm depth with change of pressure, ∆P ≥0.24 MPa was clearly observed. For comparison, radiography technique was used to correlate the depth and size of the corrosion defects and finally to detect the location of the corrosion area. The results show that the change of internal pressure plays a significant role to reveal corrosion by laser shearography in the pipelines.

Item Type: Article
Uncontrolled Keywords: Shearography, Corrosion, Pipelines, Speckle, Radiography
Subjects: T Technology > TJ Mechanical engineering and machinery
Depositing User: MS SITI NUR ATIKAH MOHAMAD RUSDI
Date Deposited: 31 Jul 2013 02:58
Last Modified: 31 Jul 2013 02:58
URI: http://repository.um.edu.my/id/eprint/1286

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