SYMPOSIA PAPER Published: 01 January 1997
STP16319S

Analysis of the Intergranular Cracking Process Inside Polycrystalline Heat-Resistant Materials Under Creep-Fatigue Conditions

Source

In order to investigate the intergranular failure process in polycrystalline materials under creep-dominant fatigue, numerical simulation of inner small cracks was conducted on the basis of a simple probabilistic model. Although the simulation condition is determined from experimental observation of the cross section of specimens interrupted at different fatigue cycles, the simulation is carried out continuously and reproduces inner cracking behavior throughout the fatigue life. This enables us not only to extract the spatial distribution of inner cracks at arbitrary creep-fatigue cycles, but also to calculate the propagation rate of each inner crack.

Author Information

Tada, N
Graduate School of Engineering, Kyoto University, Kyoto, Japan
Zhou, W
Graduate School of Engineering, Kyoto University, Kyoto, Japan
Kitamura, T
Graduate School of Engineering, Kyoto University, Kyoto, Japan
Ohtani, R
Graduate School of Engineering, Kyoto University, Kyoto, Japan
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Details
Developed by Committee: E08
Pages: 87–101
DOI: 10.1520/STP16319S
ISBN-EB: 978-0-8031-5356-1
ISBN-13: 978-0-8031-2413-4