Application of Continuous Indentation Technique in Thermal Power Plant

Abstract:

Article Preview

Reliability evaluation of the welded structure is divided by method concentrating on defect and mechanical property. Thermal power plant facilities are operated in high temperature, high pressure and called for safety guarantee. Three factors are constituted for this. The First is PSI(pre-service inspection) and the second is ISI(in-service inspection) and the third is quantitative analysis in safety. Main steam and hot reheat steam pipes in thermal power plant are frequently making a trouble because of unsuitable quality control under construction. So, the suitable construction and the development of life forecast method is urgent matter. Therefore, the continuous indentation technique is interested in effective test method of pipes in power plant facilities. This strong point of the continuous indentation technique is possibility of super-precision measurement, programmed test analysis, nondestructive stiffness evaluation. This study is focused on the possibility of the continuous indentation technique application in main steam and hot reheat steam pipes for stiffness evaluation in thermal power plant facilities.

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

1149-1152

Citation:

D. S. Gil et al., "Application of Continuous Indentation Technique in Thermal Power Plant", Advanced Materials Research, Vols. 26-28, pp. 1149-1152, 2007

Online since:

October 2007

Export:

Price:

$38.00

[1] Ahn, J. -H. and Kwon, D., 2001, Derivation of plastic stress-strain relationship from ball indentation: Examination of strain definition and pileup effect, J. Mater. Res., Vol. 16, pp.3170-3178.

DOI: https://doi.org/10.1557/jmr.2001.0437

[2] Byun, T. S., Kim, J. W., and Hong, J. H., 1998, A Theoretical Model for Determination of Fracture Toughness of Reactor Pressure Vessel Steels in the Transition Region from Automated Ball Indentation Test, , J. Nucl. Mater., Vol. 252, pp.187-194.

DOI: https://doi.org/10.1016/s0022-3115(97)00338-3

[3] Byun, T. S., Hong, J. H., Haggag, F. M., Farrell, K and Lee, E. H., 1997, Measurement of through-the-thickness variations of mechanical properties in SA508 Gr. 3 pressure vessel steels using ball indentation test technique, Int. J. Pres. Ves. & Piping, Vol. 74, pp.231-238.

DOI: https://doi.org/10.1016/s0308-0161(97)00114-2

[4] Field, J. S., and Swain, M. V., 1995, Determining the Mechanical Properties of Small Volumes of Material from Submicrometer Spherical Indentations, J. Mater. Res., Vol. 10, pp.101-112.

DOI: https://doi.org/10.1557/jmr.1995.0101

[5] ISO/Draft International Standard No. 14577, 2001, Metallic Materials - Instrumented Indentation Test for Hardness and Materials Parameters, the International Organization for Standardization (ISO).

[6] Lee, Y. -H. and Kwon, D., Residual stresses in DLC/Si and Au/Si systems: Application of a stress-relaxation model to the nanoindentation technique, J. Mater. Res. (in press).

DOI: https://doi.org/10.1557/jmr.2002.0131

[7] LaFontaine, W. R., Paszkiet, C. A., Korhonen, M. A. and Li, C. -Y., 1991, Residual stress measurements of thin aluminum metallizations by continuous indentation and x-ray stress measurement techniques, J. Mater. Res., Vol. 6, p.2084-(2090).

DOI: https://doi.org/10.1557/jmr.1991.2084

[8] Tsui, T. Y., Oliver, W. C. and Pharr, G. M., 1996, Influences of stress on the measurement of mechanical properties using nanoindentation: Part I. Experimental studies in an aluminum alloy, J. Mater. Res., Vol. 11, pp.752-759.

DOI: https://doi.org/10.1557/jmr.1996.0091

[9] Suresh, S. and Giannakopoulos, A.E., 1998, A New Method for Estimating Residual Stresses by Instrumented Sharp Indentation, Acta mater., Vol. 46, pp.5755-5767.

DOI: https://doi.org/10.1016/s1359-6454(98)00226-2

Fetching data from Crossref.
This may take some time to load.