Submitted on: 27 April 2010.
Revised on: 26 June 2010.
Accepted on: 24 July 2010.
___________________Journal of Structural Integrity and Maintenance
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Submitted on: 13 December 2014.
Revised on: 04 April 2015.
Accepted on: 14 May 2015.
___________________Journal of Structural Integrity and Maintenance
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