Daniel Smedenmark MEE07:09, pp. 52. TEK/avd. för signalbehandling, 2007.
This thesis addresses the problems in making
Non-Destructive Testing of Ultrasonic Unit Checks via a WebService
according to the standards ISO TC-135 and SS-EN 12668. The task
was to build a WebService which can handle the two standards as well as
be able to extract coordinates from a photography on an oscilloscope screen
with the corresponding time function. The core problem is to extract
the data from a wide range of different types of photographies. The focus in this
thesis is on photography with a green component in the graph. Result from
the extraction of coordinates shows good accuracy. Only small deviation can be detected if the extracted coordinates are interlaced with the original photography. An runnable WebService has also been developed.