Abstract
The Time Of Flight Diffraction (TOFD) Technique is rapidly gaining importance as a reliable NDT technique for weld inspection, capable of both detection and sizing of defects. The acquisition of TOFD inspection data is fast and straightforward; the crucial step in inspection reliability is therefore its interpretation. A reliable interpretation of TOFD images requires considerable training and skill, and in that respect bears resemblance to the interpretation of radiographic images. Therefore a need was recognized to develop a TOFD Image Reference Collection, by analogy with the existing and widely known IIW Collection of Reference Radiographs of Welds in Steel, to assist TOFD operators in analyzing images. The objective to arrive at a reference collection of TOFD Images. The TOFD image collection is a stand-alone document. Revision 0 contains, apart from typical inspection results for most defect types, an extensive introduction describing purpose, scope and instructions for use.
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