Prediction of fatigue life with interspersed mode-I and mixed-mode (I and II) overloads by an exponential model: Extensions and improvements

被引：21

作者：

Mohanty, J. R. ^{[2
]}

Verma, B. B. ^{[2
]}

Ray, P. K. ^{[1
]}

机构：

[1] Natl Inst Technol, Dept Mech Engn, Rourkela 769008, India

[2] Natl Inst Technol, Dept Met & Mat Engn, Rourkela 769008, India

来源：

ENGINEERING FRACTURE MECHANICS | 2009年 / 76卷 / 03期

关键词：

Delay cycle; Exponential model; Fatigue crack growth retardation; Fatigue life; Retardation parameters; DRIVING-FORCE PARAMETER; CRACK-GROWTH LAW; PROPAGATION;

D O I：

10.1016/j.engfracmech.2008.12.001

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The current work is an extension of the authors' earlier work and presents a life prediction methodology under interspersed mode-I and mixed-mode (I and II) overloads. The important controlling parameter in the model is 'specific growth rate' (m). It depends on two crack driving forces i.e. stress intensity factor range and maximum stress intensity factor as well as material parameters i.e. fracture toughness, Young's modulus, and yield stress. The dependence of 'm' on these parameters is correlated through a dimensionless parameter T. It is observed that the present model predicts the end life of post-overload period well in case of 7020 T7 and 2024 T3 AI-alloys. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：454 / 468

页数：15

共 35 条

[1] An experimental evaluation of fatigue crack growth [J].

Barter, S ;

Molent, L ;

Goldsmith, N ;

Jones, R .

ENGINEERING FAILURE ANALYSIS, 2005, 12 (01) :99-128

[2]

BARTER SA, 2003, DSTOTR1458

[3]

Brown W F, 1966, ASTM STP, V410, P1

[4] The effect of solidification rate on the growth of small fatigue cracks in a cast 319-type aluminum alloy [J].

Caton, MJ ;

Jones, JW ;

Boileau, JM ;

Allison, JE .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (12) :3055-3068

[5] Correlation and prediction of fatigue crack growth for different R-ratios using Kmax and ΔK+ parameters [J].

Dinda, S ;

Kujawski, D .

ENGINEERING FRACTURE MECHANICS, 2004, 71 (12) :1779-1790

[6]

Donald K, 1999, INT J FATIGUE, V21, pS47

[7]

Frost N.E., 1974, METAL FATIGUE

[8] THE PROPAGATION OF FATIGUE CRACKS IN SHEET SPECIMENS [J].

FROST, NE ;

DUGDALE, DS .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1958, 6 (02) :92-110

[9] EXPERIMENTAL-STUDY OF THE CONSTANT-PROBABILITY CRACK-GROWTH CURVES UNDER CONSTANT AMPLITUDE LOADING [J].

GHONEM, H ;

DORE, S .

ENGINEERING FRACTURE MECHANICS, 1987, 27 (01) :1-&

[10]

GOLDSMITH N, 1981, FRACTOGRAPHIC EXAMIN

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