Abstract
Oversizing occurs using the DGS method with traditional angle beam probes. Most angle beam probes have rectangular transducers. In order to find an explanation of the deviations, the sound fields of straight beam probes with circular and rectangular transducers are analyzed and compared. Straight beam probes with circular transducers generate a rotationally symmetric sound field. Due to the effects at the interface between the probe wedge and the test piece, the generated sound field is far from rotationally symmetry-independent on whether a circular or a rectangular transducer is used in angle beam probes. Using the same DGS diagram for sizing with these different sound fields does not look promising. The observed issue of the deviations is not an issue from a single probe manufacturer, but a common problem with traditional angle beam probes.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Krautkramer, J., Krautkramer, H.: Ultrasonic Testing of Materials. 4th Fully Revised Edition Translation of the 5th Revised German Edition, Springer, Berlin (1990)
Krautkrämer J.: Fehlergrössenermittlung mit Ultraschall, Arch. Eisenhüttenwesen 30 (1959)
Kleinert W., Oberdörfer Y., Splitt G.: The Ideal Angle Beam Probe for DGS Evaluation, 10th ECNDT, Moskau (2010). http://www.ndt.net/article/ecndt2010/reports/1_03_64.pdf
Yan X., Zhang J., Kass D., Langlois P.: DGS Sizing Diagram with Single Element and Phased Array Angle Beam Probe, Olympus, Waltham, MA, ndt.net (2010). http://www.ndt.net/article/ndtnet/2010/14_Yan.pdf
Kleinert, W., Oberdörfer, Y.: Calculated Bandwidth Dependent DGS and DAC Curves for Phased Array Sizing. In: Proceedings of ECNDT Prag (2014). http://www.ndt.net/events/ECNDT2014/app/content/Paper/165_Kleinert.pdf
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
Copyright information
© 2016 Springer International Publishing Switzerland
About this chapter
Cite this chapter
Kleinert, W. (2016). DGS Deviations Using Angle Beam Probes. In: Defect Sizing Using Non-destructive Ultrasonic Testing. Springer, Cham. https://doi.org/10.1007/978-3-319-32836-2_3
Download citation
DOI: https://doi.org/10.1007/978-3-319-32836-2_3
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-32834-8
Online ISBN: 978-3-319-32836-2
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)