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Submitted on: 17 February 2011.
Revised on: 29 March 2011.
Accepted on: 19 April 2011.
___________________Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
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Submitted on: 10 June 1999.
Revised on: 07 July 1999.
Accepted on: 22 August 1999.
___________________Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
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