Improvement of fatigue life by compliant and soft interlayers

被引：26

作者：

Kolednik, O. ^{[1
]}

Zechner, J. ^{[1
,2
]}

Predan, J. ^{[3
]}

机构：

[1] Austrian Acad Sci, Erich Schmid Inst Mat Sci, A-8700 Leoben, Austria

[2] Mat Ctr Leoben Forsch GmbH, A-8700 Leoben, Austria

[3] Univ Maribor, Fac Mech Engn, SI-2000 Maribor, Slovenia

来源：

SCRIPTA MATERIALIA | 2016年 / 113卷

关键词：

Aluminum alloys; Multilayers; Fatigue test; Finite element analysis; Material inhomogeneity effect; CRACK DRIVING-FORCE; INHOMOGENEOUS MATERIALS; FRACTURE-TOUGHNESS; YIELD-STRESS; PROPAGATION; MULTILAYER; INTERFACE; STRENGTH; GROWTH; STEEL;

D O I：

10.1016/j.scriptamat.2015.10.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Retardation of fatigue crack growth rate due to the introduction of thin, compliant and/or soft interlayers is investigated. The mechanism is the reduction of the crack driving force in the interlayer. Fatigue tests are conducted on composites made of high-strength aluminum alloy as matrix and technically pure aluminum or adhesive as interlayer material. The adhesive interlayer causes an increase in fatigue life by a factor 20 or more, whereas the aluminum interlayer yields only a moderate improvement. Numerical simulations based on the configurational force concept are utilized for understanding. The results show new possibilities for the design of fatigue-resistant materials. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：1 / 5

页数：5

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