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Acta Mechanica Solida Sinica

, Volume 21, Issue 4, pp 354–358 | Cite as

Effect of Specimen Aspect Ratio on Fatigue Life of Closed Cell Al-Si-Ca Alloy Foam

  • Amkee Kim
  • Ilhyun Kim
Article

Abstract

Quasi-static and compressive fatigue tests on the closed cell Al-Si-Ca alloy foam specimens with three different aspect ratios were performed. It turned out that the onset of cyclic shortening of foam with a lower aspect ratio took place earlier and the fatigue strength was lower compared with the specimen with a higher aspect ratio, although all the dimensions of specimen satisfied the seven times the cell size criterion, while the quasi-static stress-strain curves were almost same having same Young’s modulus, yield stress and plateau stress. Therefore, the seven times the cell size criterion for the quasi-static compression behavior was not applicable to the fatigue analysis of Al-Si-Ca alloy foam.

Key Words

aluminum foam aspect ratio fatigue behavior compressive strength 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2008

Authors and Affiliations

  1. 1.Division of Mechanical and Automotive EngineeringKongju National UniversityCheonan, ChungnamKorea

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