FRACTOGRAPHIC OBSERVATIONS ON THE MECHANISM OF FATIGUE CRACK GROWTH IN ALUMINIUM ALLOYS

被引：0

作者：

Alderliesten, R. C. ^{[1
]}

Schijve, J. ^{[1
]}

Krkoska, M. ^{[2
]}

机构：

[1] Delft Univ Technol, Kluyverweg 1, NL-2629 HS Delft, Netherlands

[2] Mat Innov Inst, NL-2628 CD Delft, Netherlands

来源：

FATIGUE OF MATERIALS II: ADVANCES AND EMERGENCES IN UNDERSTANDING | 2013年

关键词：

Fatigue crack propagation; Fractography; Aluminum;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Special load histories are adopted to obtain information about the behavior of the moving crack tip during the increasing and decreasing part of a load cycle. It is associated with the crack opening and closure of the crack tip. Secondly, modern SEM techniques are applied for observations on the morphology of the fractures surfaces of a fatigue crack. Information about the cross section profiles of striations are obtained. Corresponding locations of the upper and the lower fracture surface are also explored in view of the crack extension mechanism. Most experiments are carried out on sheet specimens of aluminum alloys 2024-T3, but 7050-T7451 specimens are also tested in view of a different ductility of the two alloys.

引用

页码：139 / 152

页数：14

共 5 条

[1] Elber W., 1971, Damage tolerance in aircraft structures, P230, DOI DOI 10.1520/STP486-EB
[2] Fatigue crack paths in AA2024-T3 when loaded with constant amplitude and simple underload spectra
Krkoska, M.
Barter, S. A.
Alderliesten, R. C.
White, P.
Benedictus, R.
[J]. ENGINEERING FRACTURE MECHANICS, 2010, 77 (11) : 1857 - 1865
[3] Krkoska M., 2009, P 25 ICAF S ROTT 27
[4] Laird C., 1967, Fatigue Crack Propagation, P131, DOI DOI 10.1520/STP47230S
[5] McMillan J.C., 1966, Fatigue crack propagation, P505, DOI DOI 10.1520/STP415-EB

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