Submitted on: 27 October 1999.
Revised on: 20 December 1999.
Accepted on: 12 January 2000.
___________________Journal of the Korean Society for Nondestructive Testing
http://reply.papertrans.cn/2/198/19790/19790-32.png
http://reply.papertrans.cn/2/198/19790/19790-33.png
Submitted on: 04 July 1998.
Revised on: 26 September 1998.
Accepted on: 07 November 1998.
___________________Journal of the Korean Society for Nondestructive Testing
http://reply.papertrans.cn/2/198/19790/19790-35.png
Submitted on: 02 February 2012.
Revised on: 29 May 2012.
Accepted on: 11 July 2012.
___________________Journal of the Korean Society for Nondestructive Testing