BROWSE

Related Researcher

Author's Photo

Kim, Ju-Young
Robust Multifunctional Materials Lab
Research Interests
  • Flexible / stretchable devices, nano-mechanics, nanoporous metal, materials reliability

ITEM VIEW & DOWNLOAD

Safety assessment based on mapping of degraded mechanical properties of materials for power plant pipeline using instrumented indentation technique

Cited 3 times inthomson ciCited 2 times inthomson ci
Title
Safety assessment based on mapping of degraded mechanical properties of materials for power plant pipeline using instrumented indentation technique
Author
Lee, Kyung-WooKim, Kug-HwanKim, Ju-YoungKim, Kwang-HoChoi, Byung-HakKwon, Dongil
Keywords
Degraded mechanical properties; Instrumented indentation technique; Power plant pipelines; Safety assessment
Issue Date
2009-11
Publisher
ELSEVIER SCI LTD
Citation
JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, v.22, no.6, pp.868 - 872
Abstract
The remaining life prediction of those is accomplished by accelerated degradation tests such as creep testing. However, creep testing is both time-consuming and expensive and hence impossible to apply under industrial conditions, where prompt management and analysis are necessary. While residual lifetime predictions and safety assessments of power plant facilities are made using standard mechanical testing methods such as uni-axial tensile and fracture mechanics tests. However, these tests cannot be applied to in-service structure components because of their destructive nature. A nondestructive instrumented indentation technique is thus attractive for investigating the mechanical properties of in-service systems. This technique can measure flow properties by analyzing indentation load-depth curves reflecting the deformation behavior of the material beneath the rigid spherical indenter. In this study, heat treatment was used to produce degraded samples of X20CrMo12.1V and SA-213 T23, materials widely used in power plant pipelines, and their mechanical properties versus degree of degradation were evaluated by instrumented indentation. We assess the degradation of mechanical properties by microstructural analysis and discuss the possibility of appraising the safety of power plant facilities by in-situ monitoring of mechanical properties using instrumented indentation testing. (
URI
Go to Link
DOI
10.1016/j.jlp.2008.09.007
ISSN
0950-4230
Appears in Collections:
MSE_Journal Papers
Files in This Item:
2-s2.0-71649097272.pdf Download

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU