Abstract
A stochastic model and a method of simulation of the initiation and the early propagation of creep-fatigue small cracks along grain boundaries were proposed. In the model, grain boundaries between two adjacent triple points were projected and linked on a straight line perpendicular to the applied stress axis, and their length was given as random variables of a normal distribution. The grain boundaries had their own fracture resistances, the magnitudes of which were given as uniform random numbers. The fracture resistance of each grain boundary decreased by a constant magnitude corresponding to the driving force of one fatigue cycle. When the resistance became zero or a negative value, the grain boundary was assumed to fracture and to yield an intergranular facet of small crack.
| Original language | English |
|---|---|
| Title of host publication | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
| Publisher | Publ by ASME |
| Pages | 123-127 |
| Number of pages | 5 |
| Volume | 163 |
| Publication status | Published - 1989 |
| Externally published | Yes |
| Event | Seismic Engineering - 1989: Design, Analysis, Testing, and Qualification Methods - Honolulu, HI, USA Duration: Jul 23 1989 → Jul 27 1989 |
Other
| Other | Seismic Engineering - 1989: Design, Analysis, Testing, and Qualification Methods |
|---|---|
| City | Honolulu, HI, USA |
| Period | 7/23/89 → 7/27/89 |
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ASJC Scopus subject areas
- Industrial and Manufacturing Engineering
- Mechanical Engineering
Cite this
Numerical simulation of initiation and early propagation of creep-fatigue small cracks based on a model of random fracture resistance of grain boundaries. / Ohtani, R.; Kitamura, T.; Tada, Naoya.
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP. Vol. 163 Publ by ASME, 1989. p. 123-127.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Numerical simulation of initiation and early propagation of creep-fatigue small cracks based on a model of random fracture resistance of grain boundaries
AU - Ohtani, R.
AU - Kitamura, T.
AU - Tada, Naoya
PY - 1989
Y1 - 1989
N2 - A stochastic model and a method of simulation of the initiation and the early propagation of creep-fatigue small cracks along grain boundaries were proposed. In the model, grain boundaries between two adjacent triple points were projected and linked on a straight line perpendicular to the applied stress axis, and their length was given as random variables of a normal distribution. The grain boundaries had their own fracture resistances, the magnitudes of which were given as uniform random numbers. The fracture resistance of each grain boundary decreased by a constant magnitude corresponding to the driving force of one fatigue cycle. When the resistance became zero or a negative value, the grain boundary was assumed to fracture and to yield an intergranular facet of small crack.
AB - A stochastic model and a method of simulation of the initiation and the early propagation of creep-fatigue small cracks along grain boundaries were proposed. In the model, grain boundaries between two adjacent triple points were projected and linked on a straight line perpendicular to the applied stress axis, and their length was given as random variables of a normal distribution. The grain boundaries had their own fracture resistances, the magnitudes of which were given as uniform random numbers. The fracture resistance of each grain boundary decreased by a constant magnitude corresponding to the driving force of one fatigue cycle. When the resistance became zero or a negative value, the grain boundary was assumed to fracture and to yield an intergranular facet of small crack.
UR - http://www.scopus.com/inward/record.url?scp=0024903927&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024903927&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0024903927
VL - 163
SP - 123
EP - 127
BT - American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
PB - Publ by ASME
ER -