A microscopic mechanism model and quantitive description of fatigue crack growth

被引：7
|
作者：
Jun, M [1 ]
Yi, S [1 ]
机构：
[1] Harbin Inst Technol, Dept Astronaut Engn & Mech, Harbin 150001, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2003年 / 355卷 / 1-2期
关键词：
fatigue crack growth; dislocation-free zone; cohesive zone; cleavage fracture;
D O I：
10.1016/S0921-5093(03)00050-9
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In the present paper, a new microscopic mechanism model of fatigue crack growth is presented based on the dislocation-free zone (DFZ) theory. A cohesive zone model is developed to determine the stress field of the DFZ under cyclic loading. The process of fatigue crack growth is viewed as the intermittent quasi-cleavage fracture of the DFZ. A simple relation is derived to evaluate the fatigue crack growth rate. The calculated dc/dN curves exhibit three different regimes of fatigue crack growth, which is in agreement with the general propagation pattern of fatigue crack. The model gives a reasonable explanation for both the crack growth and striation formation. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：14 / 17
页数：4
相关论文
共 50 条
  • [31] ON THE MECHANISM OF MIXED FATIGUE TENSILE CRACK-GROWTH
    BOWEN, AW
    FORSYTH, PJE
    MATERIALS SCIENCE AND ENGINEERING, 1981, 49 (02): : 141 - 154
  • [32] MECHANISM OF FATIGUE CRACK GROWTH OF BRIDGE STEEL STRUCTURES
    Zhu, H.
    ARCHIVES OF CIVIL ENGINEERING, 2016, 62 (04) : 153 - 167
  • [33] Mechanism of intergranular fatigue crack growth in copper polycrystal
    Polak, Jaroslav
    Babinsky, Tomas
    Vrazina, Tomas
    Kruml, Tomas
    INTERNATIONAL JOURNAL OF FATIGUE, 2024, 182
  • [34] SEM and AFM observation and mechanism of fatigue crack growth
    Jone, M
    FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4, 1999, : 57 - 68
  • [35] A Model to Predict the Anomalous Fatigue Crack Growth Behaviour Seen in Mixed Mechanism Fracture
    Ashcroft, I. A.
    Casas-Rodriguez, J. P.
    Silberschmidt, V. V.
    JOURNAL OF ADHESION, 2010, 86 (5-6): : 522 - 538
  • [36] Mechanism of rolling contact fatigue and mode II fatigue crack growth - a proposal on a mode II fatigue crack growth test method -
    Otsuka, Akio
    Sugawara, Hiroto
    Shomura, Mitsuhiro
    Aoyama, Masaki
    Yoo, Sung-Keun
    Shibata, Masamichi
    Zairyo/Journal of the Society of Materials Science, Japan, 1994, 43 (484) : 55 - 61
  • [37] A CUMULATIVE MODEL OF FATIGUE CRACK-GROWTH
    GLINKA, G
    INTERNATIONAL JOURNAL OF FATIGUE, 1982, 4 (02) : 59 - 67
  • [38] DIFFUSION-MODEL FOR FATIGUE CRACK GROWTH
    OH, KP
    PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, 1979, 367 (1728): : 47 - 58
  • [39] A crack growth model for the simulation of fatigue in bone
    Taylor, D
    Lee, TC
    INTERNATIONAL JOURNAL OF FATIGUE, 2003, 25 (05) : 387 - 395
  • [40] ANALYSIS OF UNZIPPING MODEL FOR FATIGUE CRACK GROWTH
    KUO, AS
    LIU, HW
    SCRIPTA METALLURGICA, 1976, 10 (08): : 723 - 728
12345