8ASME Code Case 2235-9, Use of Ultrasonic Examination in Lieu of Radiography Section Ⅰ and Section Ⅷ , Divisions 1 and 2 [ S].
9NDIS2423:2001.TOFD法缺陷测高方法[S].[S].,..
10Dr. Silk M. G. The Use of Diffraction-Based Time-of-Flight Measurements to Locate and Size Defects[J].The British Journal of NDT, 1984,26 (4) : 208-213
