1. Murugaiyan, R.: Time of flight diffraction (TOFD), an advanced non-destructive testing technique for inspection of welds for heavy walled pressure vessels. In: Proceedings of the 16th World Conference on Nondestructive Testing. Montreal, Canada (2004)
2. Gang, T., Chi, D.: Ultrasonic TOFD testing model for crack measurement in thick wall weldment. In: Proceedings of the 17th World Conference on Nondestructive Testing. Shanghai, China (2008)
3. Silk, M.G.: Defect sizing using ultrasonic diffraction. Br. J. NDT 21(1), 12–15 (1979)
4. Baby, S., Balasubramanian, T., Pardikar, R.J., Palaniappan, M., Subbaratnam, R.: Time-of-flight diffraction (TOFD) technique for accurate sizing of surface-breaking cracks. Insight Nondestr. Test. Cond. Monit. 45(6), 426–430 (2003)
5. Nath, S.K., Balasubramaniam, K., Krishnamurthy, C.V., Narayana, B.H.: Sizing of surface-breaking cracks in complex geometry components by ultrasonic time-of-flight diffraction (TOFD) technique. Insight Nondestr. Test. Cond. Monit. 49(4), 200–206 (2007)