### 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 |
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Pages (from-to) | 123-127 |

Number of pages | 5 |

Journal | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |

Volume | 163 |

Publication status | Published - Dec 1 1989 |

Externally published | Yes |

Event | Seismic Engineering - 1989: Design, Analysis, Testing, and Qualification Methods - Honolulu, HI, USA Duration: Jul 23 1989 → Jul 27 1989 |

### ASJC Scopus subject areas

- Mechanical Engineering

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## Cite this

*American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP*,

*163*, 123-127.