Fatigue life prediction based on equivalent initial flaw size for Al-Li alloy 2297 under spectrum loading

Yanzeng Wu; Yaowu Xu; Xiang Guo; Rui Bao

doi:10.1016/j.ijfatigue.2017.04.015

Fatigue life prediction based on equivalent initial flaw size for Al-Li alloy 2297 under spectrum loading

Yanzeng Wu
, Yaowu Xu
, Xiang Guo
, Rui Bao^*

^*Corresponding author for this work

School of Aeronautic Science and Engineering

Beihang University
Beijing Institute of Aeronautical Materials

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Fatigue life prediction methods based on the Equivalent Initial Flaw Size (EIFS) concept under variable amplitude (VA) spectrum loading conditions were studied in this paper. Fatigue tests of Al-Li alloy 2297 under constant amplitude (CA) and VA loading cases were carried out. Based on the comparison of predictions and test results, different ways to determine the EIFSs and whether the load-interaction effects should be considered in VA fatigue life prediction were discussed to recommend their applicable cases. A good agreement is observed between EIFS model predictions and experimental data, especially in case of high maximum stresses in VA loading.

Original language	English
Pages (from-to)	39-47
Number of pages	9
Journal	International Journal of Fatigue
Volume	103
DOIs	https://doi.org/10.1016/j.ijfatigue.2017.04.015
State	Published - Oct 2017

Keywords

AA2297
EIFS
Fatigue crack growth
Life prediction
Spectrum loading

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10.1016/j.ijfatigue.2017.04.015

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title = "Fatigue life prediction based on equivalent initial flaw size for Al-Li alloy 2297 under spectrum loading",

abstract = "Fatigue life prediction methods based on the Equivalent Initial Flaw Size (EIFS) concept under variable amplitude (VA) spectrum loading conditions were studied in this paper. Fatigue tests of Al-Li alloy 2297 under constant amplitude (CA) and VA loading cases were carried out. Based on the comparison of predictions and test results, different ways to determine the EIFSs and whether the load-interaction effects should be considered in VA fatigue life prediction were discussed to recommend their applicable cases. A good agreement is observed between EIFS model predictions and experimental data, especially in case of high maximum stresses in VA loading.",

keywords = "AA2297, EIFS, Fatigue crack growth, Life prediction, Spectrum loading",

author = "Yanzeng Wu and Yaowu Xu and Xiang Guo and Rui Bao",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = oct,

doi = "10.1016/j.ijfatigue.2017.04.015",

language = "英语",

volume = "103",

pages = "39--47",

journal = "International Journal of Fatigue",

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T1 - Fatigue life prediction based on equivalent initial flaw size for Al-Li alloy 2297 under spectrum loading

AU - Wu, Yanzeng

AU - Xu, Yaowu

AU - Guo, Xiang

AU - Bao, Rui

PY - 2017/10

Y1 - 2017/10

N2 - Fatigue life prediction methods based on the Equivalent Initial Flaw Size (EIFS) concept under variable amplitude (VA) spectrum loading conditions were studied in this paper. Fatigue tests of Al-Li alloy 2297 under constant amplitude (CA) and VA loading cases were carried out. Based on the comparison of predictions and test results, different ways to determine the EIFSs and whether the load-interaction effects should be considered in VA fatigue life prediction were discussed to recommend their applicable cases. A good agreement is observed between EIFS model predictions and experimental data, especially in case of high maximum stresses in VA loading.

AB - Fatigue life prediction methods based on the Equivalent Initial Flaw Size (EIFS) concept under variable amplitude (VA) spectrum loading conditions were studied in this paper. Fatigue tests of Al-Li alloy 2297 under constant amplitude (CA) and VA loading cases were carried out. Based on the comparison of predictions and test results, different ways to determine the EIFSs and whether the load-interaction effects should be considered in VA fatigue life prediction were discussed to recommend their applicable cases. A good agreement is observed between EIFS model predictions and experimental data, especially in case of high maximum stresses in VA loading.

KW - AA2297

KW - EIFS

KW - Fatigue crack growth

KW - Life prediction

KW - Spectrum loading

UR - https://www.scopus.com/pages/publications/85019742015

U2 - 10.1016/j.ijfatigue.2017.04.015

DO - 10.1016/j.ijfatigue.2017.04.015

M3 - 文章

AN - SCOPUS:85019742015

SN - 0142-1123

VL - 103

SP - 39

EP - 47

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Fatigue life prediction based on equivalent initial flaw size for Al-Li alloy 2297 under spectrum loading

Abstract

Keywords

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