Estimation of fatigue crack growth retardation due to crack branching

被引：24

作者：

Pavlou, DG ^{[1
]}

Vlachakis, NV

Pavlou, MG

Vlachakis, VN

机构：

[1] Technol Inst Halkidas, Dept Mech Engn, Evoia 34400, Greece

[2] Works Greek Fed Railway Org, ERGOSE SA, Athens, Greece

[3] Univ Thessalia, Dept Mech Engn, Volos, Greece

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2004年 / 29卷 / 04期

关键词：

crack growth; retardation; crack branching; fatigue;

D O I：

10.1016/j.commatsci.2003.12.003

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Quantitative analysis is provided to estimate the reduction of fatigue crack growth rate due to overload crack branching. A recent mixed-mode fatigue crack growth model based on the dilatational component of the accumulated strain energy density near the crack tip is modified to quantify the retardation factor of crack growth rate following an overload. It is found that crack branching due to an overload results in considerable reduction of fatigue crack growth rate. The retardation factor estimated by the proposed methodology is correlated with test results for the 2090-T8E41 aluminum-lithium alloy indicating encouraging agreement. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：446 / 452

页数：7

共 14 条

[1]

Elber W., 1970, Engineering Fracture Mechanics, V2, P37, DOI 10.1016/0013-7944(70)90028-7

[2] A THEORETICAL EVALUATION OF CRACK CLOSURE [J].

LOUAT, N ;

SADANANDA, K ;

DUESBERY, M ;

VASUDEVAN, AK .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1993, 24 (10) :2225-2232

[3] FATIGUE CRACK-GROWTH OF AL-2024-T3 UNDER LOW AMPLITUDE 2-STEP LOADING [J].

MAYER, HR ;

STANZL, SE ;

TSCHEGG, EK ;

SCHIJVE, J .

FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES, 1992, 15 (03) :265-275

[4] FATIGUE-CRACK GROWTH-RETARDATION ASSESSMENT OF 2024-T3 AND 6061-T6 ALUMINUM SPECIMENS [J].

PANTELAKIS, SG ;

KERMANIDIS, TB ;

PAVLOU, DG .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 1995, 22 (01) :35-42

[5]

PARRY MR, 2000, P 6 INT C DAM FRACT, P313

[6] Prediction of fatigue crack growth under real stress histories [J].

Pavlou, DG .

ENGINEERING STRUCTURES, 2000, 22 (12) :1707-1713

[7]

PAVLOU DG, 2000, P 6 INT C DAM FRACT, P305

[8]

PAVLOU FH, 1998, P 5 INT C STRUCT SHO, P633

[9] MECHANISMS FOR THE RETARDATION OF FATIGUE CRACKS FOLLOWING SINGLE TENSILE OVERLOADS - BEHAVIOR IN ALUMINUM LITHIUM ALLOYS [J].

RAO, KTV ;

RITCHIE, RO .

ACTA METALLURGICA, 1988, 36 (10) :2849-2862

[10] MIXED-MODE FATIGUE CRACK-GROWTH PREDICTIONS [J].

SIH, GC ;

BARTHELEMY, BM .

ENGINEERING FRACTURE MECHANICS, 1980, 13 (03) :439-451

← 1 2 →