Abstract
This paper outlines a method to model creep failure of polycrystalline materials based on a real microstructure taken from an optical microscope. The creep failure is simulated in 304 stainless steel and the simulation is based on Norton's creep law. By treating the grain boundaries and the grains differently and adopting the void nucleation process proposed by Shewmon, the creep strain energy density can be used as a failure criterion. The result of the simulation confirmed the results of conventional methods used in a high-temperature remnant life assessment. The intermediate results of the simulation process allow calculation/monitoring of stiffnesses degradation as the material undergoes creep failure.
| Original language | English |
|---|---|
| Pages (from-to) | 68-79 |
| Number of pages | 12 |
| Journal | Journal of Failure Analysis and Prevention |
| Volume | 2 |
| Issue number | 6 |
| Publication status | Published - 2002 |
| Externally published | Yes |
Fingerprint
Keywords
- Creep failure
- High-temperature RLA (remnant life assessment)
- Stiffness degradation
ASJC Scopus subject areas
- Mechanical Engineering
- Mechanics of Materials
- Safety, Risk, Reliability and Quality
- Materials Science(all)
Cite this
Modeling creep damage based on real microstructure. / Prawoto, Y.; Aizawa, T.
In: Journal of Failure Analysis and Prevention, Vol. 2, No. 6, 2002, p. 68-79.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Modeling creep damage based on real microstructure
AU - Prawoto, Y.
AU - Aizawa, T.
PY - 2002
Y1 - 2002
N2 - This paper outlines a method to model creep failure of polycrystalline materials based on a real microstructure taken from an optical microscope. The creep failure is simulated in 304 stainless steel and the simulation is based on Norton's creep law. By treating the grain boundaries and the grains differently and adopting the void nucleation process proposed by Shewmon, the creep strain energy density can be used as a failure criterion. The result of the simulation confirmed the results of conventional methods used in a high-temperature remnant life assessment. The intermediate results of the simulation process allow calculation/monitoring of stiffnesses degradation as the material undergoes creep failure.
AB - This paper outlines a method to model creep failure of polycrystalline materials based on a real microstructure taken from an optical microscope. The creep failure is simulated in 304 stainless steel and the simulation is based on Norton's creep law. By treating the grain boundaries and the grains differently and adopting the void nucleation process proposed by Shewmon, the creep strain energy density can be used as a failure criterion. The result of the simulation confirmed the results of conventional methods used in a high-temperature remnant life assessment. The intermediate results of the simulation process allow calculation/monitoring of stiffnesses degradation as the material undergoes creep failure.
KW - Creep failure
KW - High-temperature RLA (remnant life assessment)
KW - Stiffness degradation
UR - http://www.scopus.com/inward/record.url?scp=13444292666&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=13444292666&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:13444292666
VL - 2
SP - 68
EP - 79
JO - Journal of Failure Analysis and Prevention
JF - Journal of Failure Analysis and Prevention
SN - 1547-7029
IS - 6
ER -