Abstract
In this study, a method for determining Ramberg-Osgood constants for leak-before-break evaluation was investigated. The Ramberg-Osgood constants were calculated for SA312, TP316, and SA-508 Gr.1a in an operating temperature of 316 oC. Incremental plasticity, using stress-strain data obtained from experiment, and deformation plasticity, using the Ramberg-Osgood constants, were considered in a finite element analysis. Using incremental plasticity and deformation plasticity, J-integrals and crack opening displacement values were calculated and compared. By comparing the results of incremental plasticity and deformation plasticity, a suitable method for determining Ramberg-Osgood constants for leak-before-break evaluation was confirmed.
Original language | English |
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Pages (from-to) | 645-652 |
Number of pages | 8 |
Journal | Transactions of the Korean Society of Mechanical Engineers, A |
Volume | 39 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Jul |
Bibliographical note
Publisher Copyright:© 2015 The Korean Society of Mechanical Engineers.
Keywords
- Circumferential through-wall crack
- Crack opening displacement
- Deformation plasticity
- Incremental plasticity
- J - integral
- Leak before break assessment
- Ramberg-osgood equation
ASJC Scopus subject areas
- Mechanical Engineering