An Algorithm for Flaw Detection and Sizing in Offshore Steel Structures

maintain a history of the flan throughout the volume of material sampled. Sucessive samples taken at different locations are then accumulated to produce a sharp image of the flan. This paper describes an algorithm for locating and sizing flaws in steel structures, in particular offshore oil rigs. The algorithm depends on the use of electronic beam steering and a personal computer mouse to correlate flaw data with position. The mouse is rolled over the surface to be investigated. At each new location, the probe collects