Creep-rupturing of open-cell foams

Ting Jung Chen, Jong-Shin Huang

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

A repeating element consisting of four straight and uniform-thickness cell struts in a pentagonal dodecahedron model is employed to analyze theoretically the creep-rupturing of open-cell foams. In the repeating element, the solid making up cell struts is assumed to follow power-law creep and the Monkman-Grant relationship. Consequently, the theoretical expressions for describing the steady-state creep strain rate and creep-rupturing time of open-cell foams are obtained. It is shown that the creep-rupturing of open-cell foams can also be described by the Monkman-Grant relationship. Moreover, the Monkman-Grant parameters m* and B* of open-cell foams depend on their cell structure and those of solid cell struts. The Monkman-Grant parameters determined from the existing experimental results on the creep-rupturing of open-cell aluminum alloy foams are compared to those calculated theoretically from the proposed pentagonal dodecahedron model. The difference between theoretically calculated and empirically determined B* is attributed to some pre-existing cell structural imperfections in open-cell aluminum alloy foams.

Original languageEnglish
Pages (from-to)2283-2289
Number of pages7
JournalActa Materialia
Volume56
Issue number10
DOIs
Publication statusPublished - 2008 Jun 1

Fingerprint

Foams
Creep
Struts
Aluminum alloys
Strain rate
Defects

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Materials Science(all)
  • Metals and Alloys

Cite this

Chen, Ting Jung ; Huang, Jong-Shin. / Creep-rupturing of open-cell foams. In: Acta Materialia. 2008 ; Vol. 56, No. 10. pp. 2283-2289.
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Creep-rupturing of open-cell foams. / Chen, Ting Jung; Huang, Jong-Shin.

In: Acta Materialia, Vol. 56, No. 10, 01.06.2008, p. 2283-2289.

Research output: Contribution to journalArticle

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