Approximative Modeling for the Practical Application at Ultrasonic Inspections
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Description: H.Wüstenberg, A.Erhard (NDT-net)
Approximative Modeling for the Practical Application at Ultrasonic Inspections Approximative Modeling for the Practical Application at Ultrasonic Inspections H.Wüstenberg, A.Erhard Endorsed by the wide spread availability of powerful computer technology the manual ultrasonic inspection e. g. on welds is to an increasing amount replaced by mechanized automatic inspections. The standard presentation of a result from an automatic inspection is a picture of indications either in a direct presentation of the basic datas received by the ultrasonic inspection device (e.g. C-Scans or B-Scans produced by combining A-scan- and probe position data) or derived from the primary datas with more or less sophisticated transformation procedures (SAFT, Holography etc.). Due to the imagelike presentation of the results, the operator has to apply special acceptance criteria which are not only derived from the echo amplitude. They should ruthermore be based on typical patterns corresponding to special defect situations. Theoretical modeling of such patterns represents therefore a stringent need for a reliable automatic ultrasonic inspection and for the training of operators. This contribution tries to describe a kind of approximative modeling for the practical application at ultrasonic inspections for some typical cases.
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Date | Creation Date: 26-oct-1996 Expiration Date: 25-oct-2014 |