Fatigue life prediction using critical distance on aluminum alloy wire containing indentation produced marks

被引：12

作者：

Gomes, Rodrigo C. ^{[1
]}

Araujo, Jose A. ^{[1
]}

Cardoso, Raphael A. ^{[2
]}

Ferreira, Jorge L. A. ^{[1
]}

Silva, Cosme R. M. ^{[1
]}

机构：

[1] Univ Brasilia, Dept Mech Engn, BR-70910900 Brasilia, DF, Brazil

[2] Univ Fed Rio Grande do Norte, Dept Mech Engn, BR-59078970 Natal, RN, Brazil

来源：

THEORETICAL AND APPLIED FRACTURE MECHANICS | 2023年 / 128卷

关键词：

Fatigue; Life-Prediction; Indentation; Theory of Critical Distance; Finite Element Method; ESTIMATE FINITE LIFE; FRETTING FATIGUE; NOTCHED COMPONENTS; STRESS; PHASE; H/W;

D O I：

10.1016/j.tafmec.2023.104135

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The present study aims to predict fatigue life in aluminum alloy 6201-T81 wires containing defects produced by hardness indentation procedures. The wires tested were obtained from a 900 MCM All Aluminum Alloy Conductor (AAAC 900 MCM) used in power transmission lines. The stress field in the vicinity of the defect and the determination of the crack initiation site (hotspot) were obtained by applying elastic-plastic simulations via the Finite Element Method (FEM). Such a simulation considered both the indentation process, and the fatigue loading on the wire. The Smith-Watson-Topper multiaxial fatigue criterion applied to an equivalent stress computed by the Volume Method (MV) was used to estimate life. Challenges presented by the incorporation of the residual stress field and the choice of the best calibration procedures were addressed. Comparison between stress gradients in simulations and failures observed in fractographic analyses of specimens subjected to fatigue testing suggested similar potential crack propagation regions. A new and wide experimental campaign showed that presence of indentation defects reduced the fatigue life of the wires. 84% of the lives computed by the proposed methodology were within a factor of 3 compared with tests, being the worst estimate within a factor of 5 .

引用

页数：15

共 38 条

[1] The influence of the fatigue process zone size on fatigue life estimations performed on aluminum wires containing geometric discontinuities using the Theory of Critical Distances [J].

Adriano, V. S. R. ;

Martinez, J. M. G. ;

Ferreira, J. L. A. ;

Araujo, J. A. ;

da Silva, C. R. M. .

THEORETICAL AND APPLIED FRACTURE MECHANICS, 2018, 97 :265-278

[2] The crystal structure of the β" phase in Al-Mg-Si alloys [J].

Andersen, SJ ;

Zandbergen, HW ;

Jansen, J ;

Traeholt, C ;

Tundal, U ;

Reiso, O .

ACTA MATERIALIA, 1998, 46 (09) :3283-3298

[3]

[Anonymous], 2015, StandardPractice for Conducting Force Controlled Constant Amplitude Axial Fatigue Tests of Metallic Materials, DOI [10.1520/E0466-07, DOI 10.1520/E0466-07]

[4]

[Anonymous], 2015, ASTM. E739-10

[5] Life prediction in multiaxial high cycle fretting fatigue [J].

Araujo, J. A. ;

Castro, F. C. ;

Matos, I. M. ;

Cardoso, R. A. .

INTERNATIONAL JOURNAL OF FATIGUE, 2020, 134

[6] A multiaxial stress-based critical distance methodology to estimate fretting fatigue life [J].

Araujo, J. A. ;

Susmel, L. ;

Pires, M. S. T. ;

Castro, F. C. .

TRIBOLOGY INTERNATIONAL, 2017, 108 :2-6

[7] Equivalent configurations for notch and fretting fatigue [J].

Araujo, J. A. ;

Castro, F. C. ;

Pommier, S. ;

Bellecave, J. ;

Meriaux, J. .

FRATTURA ED INTEGRITA STRUTTURALE, 2015, 9 (33) :427-433

[8]

Araujo J.A., 2022, Fretting Wear and Fretting Fatigue: Fundamental Principles and Applications, V565, P598, DOI [10.1016/C2020-0-00006-X, DOI 10.1016/C2020-0-00006-X]

[9]

Araujo J.A., 2023, Comprehensive Structural Integrity, V249, P282, DOI [10.1016/c2010-1-66646-1, DOI 10.1016/C2010-1-66646-1]

[10] Fretting fatigue in overhead conductors: Rig design and failure analysis of a Grosbeak aluminium cable steel reinforced conductor [J].

Azevedo, C. R. F. ;

Henriques, A. M. D. ;

Pulino Filho, A. R. ;

Ferreira, J. L. A. ;

Araujo, J. A. .

ENGINEERING FAILURE ANALYSIS, 2009, 16 (01) :136-151

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