Monitoring of the crack growth in grooved CT-sample by potential method
Abstract eng: The calibration of the potential method DC/PD is calculated for the side-grooved CT-sample with point current inputs. The grooves are modelled by a line transition resistance producing a potential discontinuity. The groove-less field and groove resistance parameter are found using the conformal mapping in related perpendicular planes. The goove correction to the field is solved as a boundary value problem of the third kind. The check of calibration using independent measurements of creep crack extension (in steel P91 at 600°C) reveals the accuracy of about 0.1 mm. So, the continuous monitoring of the crack growth becomes available without any post fitting of the calibration curves.
Contributors:
Publisher:
Institute of Thermomechanics AS CR, v.v.i., Brno
Conference Title:
Conference Title:
ENGINEERING MECHANICS 2005
Conference Venue:
Svratka (CZ)
Conference Dates:
2005-05-09 / 2005-05-12
Rights:
Text je chráněný podle autorského zákona č. 121/2000 Sb.
Record appears in:
Record created 2014-11-12, last modified 2014-11-18
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