Low cycle fatigue of aluminum foam

被引：40

作者：

Ingraham, M. D. ^{[1
]}

DeMaria, C. J. ^{[1
]}

Issen, K. A. ^{[1
]}

Morrison, D. J. ^{[1
]}

机构：

[1] Clarkson Univ, Dept Mech & Aeronaut Engn, Potsdam, NY 13676 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 504卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

Aluminum; Foams; Fatigue; Digital image correlation; Cellular metal; Strain-life; OPEN CELL; BEHAVIOR; DEFORMATION; FRACTURE;

D O I：

10.1016/j.msea.2008.10.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An experimental investigation into the tension-compression fatigue behavior and failure mode of closed-cell aluminum foam was conducted. Alporas aluminum foam specimens, of 8.7% average relative density, were subjected to fully reversed axial fatigue at nominal total strain amplitudes ranging from 0.05% to 0.5%. The material exhibited minimal strain hardening, regardless of strain amplitude, and followed a Coffin-Manson relationship relating strain amplitude to fatigue life. Surface strain maps, generated through digital image correlation, suggest that compaction assisted crack propagation was an important driving force in the failure process. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：150 / 156

页数：7

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