Fatigue behaviour of CF/PEEK composite laminates made from commingled prepreg. Part I: Experimental studies

Xiaoxue Diao; Lin Ye; Yiu Wing Mai

doi:10.1016/S1359-835X(97)00025-0

Fatigue behaviour of CF/PEEK composite laminates made from commingled prepreg. Part I: Experimental studies

Xiaoxue Diao, Lin Ye, Yiu Wing Mai

Research output: Journal article publication › Journal article › Academic research › peer-review

41 Citations (Scopus)

Abstract

The static and fatigue properties of continuous AS4 carbon fibre reinforced polyetheretherketone (PEEK) composite laminates made from commingled unifabric prepreg were investigated under static tension and tension-tension fatigue loading. Three different lay-ups were studied, namely [0]₁₆, [90]₁₆ and [0₂/90₂]_2s. The results for static stiffness and strength as well as fatigue life and residual strength under different fatigue stress amplitudes were evaluated and compared with those of composite laminates made from other preforms. The damage and failure mechanisms of the composite laminates were discussed. The wear-out model was applied to fit the S-N curves and estimate residual strength of composite laminates, and good correlation was obtained. Compared to composite laminates made from pre-impregnated tape prepreg (e.g. APC-2), the commingled CF/ PEEK composite laminates are much more sensitive to fatigue loading because of imperfect fibre bundle alignment.

Original language	English
Pages (from-to)	739-747
Number of pages	9
Journal	Composites Part A: Applied Science and Manufacturing
Volume	28
Issue number	8
DOIs	https://doi.org/10.1016/S1359-835X(97)00025-0
Publication status	Published - 1 Jun 1997
Externally published	Yes

Keywords

CF/PEEK composites
Commingled prepreg
Damage mechanisms
Fatigue behaviour
Tension-tension fatigue

ASJC Scopus subject areas

Ceramics and Composites
Mechanics of Materials

More information

10.1016/S1359-835X(97)00025-0

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title = "Fatigue behaviour of CF/PEEK composite laminates made from commingled prepreg. Part I: Experimental studies",

abstract = "The static and fatigue properties of continuous AS4 carbon fibre reinforced polyetheretherketone (PEEK) composite laminates made from commingled unifabric prepreg were investigated under static tension and tension-tension fatigue loading. Three different lay-ups were studied, namely [0]16, [90]16 and [02/902]2s. The results for static stiffness and strength as well as fatigue life and residual strength under different fatigue stress amplitudes were evaluated and compared with those of composite laminates made from other preforms. The damage and failure mechanisms of the composite laminates were discussed. The wear-out model was applied to fit the S-N curves and estimate residual strength of composite laminates, and good correlation was obtained. Compared to composite laminates made from pre-impregnated tape prepreg (e.g. APC-2), the commingled CF/ PEEK composite laminates are much more sensitive to fatigue loading because of imperfect fibre bundle alignment.",

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AU - Diao, Xiaoxue

AU - Ye, Lin

AU - Mai, Yiu Wing

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Y1 - 1997/6/1

N2 - The static and fatigue properties of continuous AS4 carbon fibre reinforced polyetheretherketone (PEEK) composite laminates made from commingled unifabric prepreg were investigated under static tension and tension-tension fatigue loading. Three different lay-ups were studied, namely [0]16, [90]16 and [02/902]2s. The results for static stiffness and strength as well as fatigue life and residual strength under different fatigue stress amplitudes were evaluated and compared with those of composite laminates made from other preforms. The damage and failure mechanisms of the composite laminates were discussed. The wear-out model was applied to fit the S-N curves and estimate residual strength of composite laminates, and good correlation was obtained. Compared to composite laminates made from pre-impregnated tape prepreg (e.g. APC-2), the commingled CF/ PEEK composite laminates are much more sensitive to fatigue loading because of imperfect fibre bundle alignment.

AB - The static and fatigue properties of continuous AS4 carbon fibre reinforced polyetheretherketone (PEEK) composite laminates made from commingled unifabric prepreg were investigated under static tension and tension-tension fatigue loading. Three different lay-ups were studied, namely [0]16, [90]16 and [02/902]2s. The results for static stiffness and strength as well as fatigue life and residual strength under different fatigue stress amplitudes were evaluated and compared with those of composite laminates made from other preforms. The damage and failure mechanisms of the composite laminates were discussed. The wear-out model was applied to fit the S-N curves and estimate residual strength of composite laminates, and good correlation was obtained. Compared to composite laminates made from pre-impregnated tape prepreg (e.g. APC-2), the commingled CF/ PEEK composite laminates are much more sensitive to fatigue loading because of imperfect fibre bundle alignment.

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Fatigue behaviour of CF/PEEK composite laminates made from commingled prepreg. Part I: Experimental studies

Abstract

Keywords

ASJC Scopus subject areas

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