Effect of stress ratio on fatigue characteristics in the out-of-plane direction of thick CFRP laminates with toughened interlaminar layers

Atsushi Hosoi; Shigeyoshi Sakuma; Sen Seki; Yuzo Fujita; Ichiro Taketa; Hiroyuki Kawada

Effect of stress ratio on fatigue characteristics in the out-of-plane direction of thick CFRP laminates with toughened interlaminar layers

Atsushi Hosoi, Shigeyoshi Sakuma, Sen Seki, Yuzo Fujita, Ichiro Taketa, Hiroyuki Kawada

Research output: Contribution to conference › Paper › peer-review

Abstract

The effect of the stress ratio on fatigue characteristics in the out-of-plane direction of thick carbon fiber reinforced plastic (CFRP) laminates with toughened interlaminar layers was evaluated. The spool shaped specimens cut out the unidirectional thick CFRP laminates, which pile up 88 plies of the prepreg with toughened interlaminar layer, T800S/3900-2B, were used. The fatigue tests were conducted under the stress ratios of R = 0.1 and -1 to evaluate the effect of the stress ratio. As the results of the fatigue tests, the fatigue life of the specimens at R = -1 was shorter than that at R = 0.1. It was found that the fatigue properties of the CFRP laminates in the out-of-plane direction are affected by the stress amplitude from the experimental results. In addition, the fatigue life under the different stress ratio can be evaluated equivalently using the Walker model which can consider the mean stress effect.

Original language	English
Publication status	Published - 2015 Jan 1
Event	20th International Conference on Composite Materials, ICCM 2015 - Copenhagen, Denmark Duration: 2015 Jul 19 → 2015 Jul 24

Other

Other	20th International Conference on Composite Materials, ICCM 2015
Country	Denmark
City	Copenhagen
Period	15/7/19 → 15/7/24

Keywords

Fatigue
Out-of-plane
Stress ratio
Thick CFRP laminates
Toughened interlaminar layers

ASJC Scopus subject areas

Engineering(all)
Ceramics and Composites

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Effect of stress ratio on fatigue characteristics in the out-of-plane direction of thick CFRP laminates with toughened interlaminar layers. / Hosoi, Atsushi; Sakuma, Shigeyoshi; Seki, Sen; Fujita, Yuzo; Taketa, Ichiro; Kawada, Hiroyuki.

2015. Paper presented at 20th International Conference on Composite Materials, ICCM 2015, Copenhagen, Denmark.

Research output: Contribution to conference › Paper › peer-review

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abstract = "The effect of the stress ratio on fatigue characteristics in the out-of-plane direction of thick carbon fiber reinforced plastic (CFRP) laminates with toughened interlaminar layers was evaluated. The spool shaped specimens cut out the unidirectional thick CFRP laminates, which pile up 88 plies of the prepreg with toughened interlaminar layer, T800S/3900-2B, were used. The fatigue tests were conducted under the stress ratios of R = 0.1 and -1 to evaluate the effect of the stress ratio. As the results of the fatigue tests, the fatigue life of the specimens at R = -1 was shorter than that at R = 0.1. It was found that the fatigue properties of the CFRP laminates in the out-of-plane direction are affected by the stress amplitude from the experimental results. In addition, the fatigue life under the different stress ratio can be evaluated equivalently using the Walker model which can consider the mean stress effect.",

keywords = "Fatigue, Out-of-plane, Stress ratio, Thick CFRP laminates, Toughened interlaminar layers",

author = "Atsushi Hosoi and Shigeyoshi Sakuma and Sen Seki and Yuzo Fujita and Ichiro Taketa and Hiroyuki Kawada",

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AU - Hosoi, Atsushi

AU - Sakuma, Shigeyoshi

AU - Seki, Sen

AU - Fujita, Yuzo

AU - Taketa, Ichiro

AU - Kawada, Hiroyuki

PY - 2015/1/1

Y1 - 2015/1/1

N2 - The effect of the stress ratio on fatigue characteristics in the out-of-plane direction of thick carbon fiber reinforced plastic (CFRP) laminates with toughened interlaminar layers was evaluated. The spool shaped specimens cut out the unidirectional thick CFRP laminates, which pile up 88 plies of the prepreg with toughened interlaminar layer, T800S/3900-2B, were used. The fatigue tests were conducted under the stress ratios of R = 0.1 and -1 to evaluate the effect of the stress ratio. As the results of the fatigue tests, the fatigue life of the specimens at R = -1 was shorter than that at R = 0.1. It was found that the fatigue properties of the CFRP laminates in the out-of-plane direction are affected by the stress amplitude from the experimental results. In addition, the fatigue life under the different stress ratio can be evaluated equivalently using the Walker model which can consider the mean stress effect.

AB - The effect of the stress ratio on fatigue characteristics in the out-of-plane direction of thick carbon fiber reinforced plastic (CFRP) laminates with toughened interlaminar layers was evaluated. The spool shaped specimens cut out the unidirectional thick CFRP laminates, which pile up 88 plies of the prepreg with toughened interlaminar layer, T800S/3900-2B, were used. The fatigue tests were conducted under the stress ratios of R = 0.1 and -1 to evaluate the effect of the stress ratio. As the results of the fatigue tests, the fatigue life of the specimens at R = -1 was shorter than that at R = 0.1. It was found that the fatigue properties of the CFRP laminates in the out-of-plane direction are affected by the stress amplitude from the experimental results. In addition, the fatigue life under the different stress ratio can be evaluated equivalently using the Walker model which can consider the mean stress effect.

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KW - Out-of-plane

KW - Stress ratio

KW - Thick CFRP laminates

KW - Toughened interlaminar layers

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