Hostname: page-component-76fb5796d-qxdb6 Total loading time: 0 Render date: 2024-04-25T16:06:25.545Z Has data issue: false hasContentIssue false
  • English
  • Français

Assessment of Creep Damage by NDT

Published online by Cambridge University Press:  21 February 2011

Herbert H. Willems
Herbert H. Willems*
Affiliation:
Fraunhofer-Institute for Nondestructive Testing, University, Building 37, D-6600 Saarbrücken 11, Federal Republic of Germany
Get access

Abstract

Residual lifetime analysis of power plant components requires information on the degree of degradation of the material. In case of hightemperature creep, material damage can be related to cavity formation or to the accumulated creep strain. At present, only metallographic replication technique is widely used for in-service inspection to detect creep cavitation. Other NDT-techniques like ultrasonic velocity and electrical resistivity, which have potential for detection of low pore concentrations, are being developed for practical application. The use of capacitive strain gages yields encouraging results for the long-time monitoring of creep deformation. Potential and limits of these NDT-techniques together with industrial needs for creep damage assessment are reviewed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 142: Symposium U – Nondestructive Monitoring of Materials Properties , 1988 , 165
Copyright
Copyright © Materials Research Society 1989

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

/1/ Lempp, W., Kasik, N., Feller, U., in: Proc. of the 2nd Int. Symp. on Nondestructive Characterization of Materials, Plenum Publishing Corp., 1987, 441–449Google Scholar
/2/ Hofstötter, P., Int. Conf. “Life Assessment and Extension”, Conf. Proc. Session II, The Hague 1988, 125–129Google Scholar
/3/ Leckie, F.A., Phil. Trans. R. Soc. London. A 288 (1978) 27–47 Google Scholar
/4/ Brinkman, J.L., Dufour, L.B., Baten, R.J. H., Inf. Conf. “Life Assessment and Extension”, Conf. Proc. Session II, The Hague 1988, 44–50Google Scholar
/5/ Bendick, W., Weber, H., Phil. Trans. R. Soc. London. A 288 (1978) 27–47, Conf. Proc. Session Il, 76–84Google Scholar
/6/ Neubauer, B., Wedel, U., ASME Int. Conf. on Advances in Life Prediction Methods, Albany 1983, 307–313Google Scholar
/7/ Auerkari, P., Eurotest Technical Bulletin, Dec. 1983 Google Scholar
/8/ Willems, H., Bendick, W., Weber, H., in: Proc. of the 2nd Int. Symp. on Nondestructive Characterization of Materials (eds. Bussière, J.-P. et al. ), Plenum Publishing Corp., 1987, 451–460CrossRefGoogle Scholar
/9/ Willems, H., 13. MPA-Seminar, Stuttgart, 8.–9. Okt. 1987, Band IGoogle Scholar
/10/ Schneider, E., Herzer, R., VDI-Berichte Nr. 679 (1988) 301–311 Google Scholar
/11/ Ondracek, G., Z. Werkstofftech. 8 (1977) 280–287 CrossRefGoogle Scholar
/12/ Kneller, E., Ferromagnetismus, Springer-Verlag 1962 Google Scholar
/13/ Theiner, W.A., Reimringer, B., Kopp, H., 3. Int. Symp. on Nondestructive Characterization of Materials, Saarbrücken, 3.–6. Okt. 1988 Google Scholar