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Studies on the effect of flaw characteristics and selected inspection parameters on the detection and sizing of flaws in ferritic steel blocks have been performed by UKAEA as part of a larger CEC Parametric Study programme. The techniques included were the 45 tandem and the time-of-flight diffraction techniques. The purpose of the work was to acquire reliable experimental data that could be used both to test and verify theoretical models and to contribute to the resolution of anomalies encountered in PISC round-robin inspection exercises. To this end, the data were gathered in a format compatible with that of the theoretical predictions and scanning parameters were employed that would test the theoretical models over a range of inspection conditions. For the studies, eighteen test blocks were fabricated by Ispra in which a range of flaw types were inserted covering flaw shape, size, roughness and orientation. Thirteen of these were selected for the UKAEA programme on the basis of their relevance to the validation of theoretical models and their value to flaw characterisation studies. This final report describes the programme, data gathering procedures and the results of the studies.

Additional information

Authors: MURGATROYD R A, UKAEA, RNL, Risley Power Development Laboratory, Warrington (GB);HIGHMORE P J, UKAEA, RNL, Risley Power Development Laboratory, Warrington (GB);BANN T, UKAEA, RNL, Risley Power Development Laboratory, Warrington (GB);BURCH S F, UKAEA, AERE, Harwell, Oxfordshire (GB);RAMSEY A T, UKAEA, AERE, Harwell, Oxfordshire (GB)
Bibliographic Reference: EUR 12431 EN (1989) 36 pp., FS, ECU 5
Availability: (2)
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