Low cycle fatigue behavior of symmetric angle-ply AS4/PEEK laminate

Masahiro Sakai, Kazuo Kunoo, Nobuhide Uda, Kousei Ono, Tadashi Nagayasu

Research output: Contribution to journalArticle

Abstract

The present study includes low cycle fatigue behavior of graphite/PEEK composite materials. We conducted static tension tests to determine ultimate strength and low cycle fatigue tests using coupon specimens made from angle-ply laminates of which stacking sequence is [+30/-30]4s. Stress-strain relations are measured by an extensometer during fatigue testing for every fixed cycle in order to estimate a damage accumulation. The experimental results of stress-strain relations for every fixed cycle showed an accumulation of plastic strain, so-called ratchet type strain. The tests also indicated that fatigue failure occurred when ratchet strain reached static failure strain of about 3.9%. Moreover, we point out the difference between static failure mode and fatigue one by observing failure surface.

Original languageEnglish
Pages (from-to)125-130
Number of pages6
JournalTheoretical and Applied Mechanics
Issue number46
Publication statusPublished - Dec 1 1997

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Polyether ether ketones
fatigue
Laminates
Fatigue of materials
Dilatometers
Fatigue testing
stacking
graphite
Failure modes
Plastic deformation
Graphite
plastic
damage
Composite materials
test

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials

Cite this

Sakai, M., Kunoo, K., Uda, N., Ono, K., & Nagayasu, T. (1997). Low cycle fatigue behavior of symmetric angle-ply AS4/PEEK laminate. Theoretical and Applied Mechanics, (46), 125-130.

Low cycle fatigue behavior of symmetric angle-ply AS4/PEEK laminate. / Sakai, Masahiro; Kunoo, Kazuo; Uda, Nobuhide; Ono, Kousei; Nagayasu, Tadashi.

In: Theoretical and Applied Mechanics, No. 46, 01.12.1997, p. 125-130.

Research output: Contribution to journalArticle

Sakai, M, Kunoo, K, Uda, N, Ono, K & Nagayasu, T 1997, 'Low cycle fatigue behavior of symmetric angle-ply AS4/PEEK laminate', Theoretical and Applied Mechanics, no. 46, pp. 125-130.
Sakai, Masahiro ; Kunoo, Kazuo ; Uda, Nobuhide ; Ono, Kousei ; Nagayasu, Tadashi. / Low cycle fatigue behavior of symmetric angle-ply AS4/PEEK laminate. In: Theoretical and Applied Mechanics. 1997 ; No. 46. pp. 125-130.
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