Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates

Atsushi Hosoi; Shinako Yagi; Keiichi Nagata; Hiroyuki Kawada

Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates

Atsushi Hosoi, Shinako Yagi, Keiichi Nagata, Hiroyuki Kawada

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The high-cycle fatigue characteristics, especially the initiation and propagation of edge delamination, were investigated with quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]S. To investigate the influence that transverse cracks have on the initiation and propagation of edge delamination, two types of specimens are used. One was a specimen where transverse cracks were arbitrarily introduced by static tensile loading before conducting the fatigue tests. The other was an undamaged specimen as new. As a result, it was found that the single transverse crack introduced before the fatigue test did not seriously affect the initiation of edge delamination. Moreover, the difference of the fatigue damage growth behavior depending on the applied stress level was observed. Under the test conditions of low-applied stress level and high-cyclic loadings, it was observed that the edge delamination grew before, or simultaneously with, the transverse crack propagation.

Original language	English
Title of host publication	ICCM International Conferences on Composite Materials
Publication status	Published - 2007
Event	16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace" - Kyoto Duration: 2007 Jul 8 → 2007 Jul 13

Other

Other	16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
City	Kyoto
Period	07/7/8 → 07/7/13

Keywords

Cfrp laminates
Composites
Delamination
Free-edge effects
High-cycle fatigue
Transverse crack

ASJC Scopus subject areas

Engineering(all)
Ceramics and Composites

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Hosoi, A, Yagi, S, Nagata, K & Kawada, H 2007, Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates. in ICCM International Conferences on Composite Materials. 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace", Kyoto, 07/7/8.

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title = "Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates",

abstract = "The high-cycle fatigue characteristics, especially the initiation and propagation of edge delamination, were investigated with quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]S. To investigate the influence that transverse cracks have on the initiation and propagation of edge delamination, two types of specimens are used. One was a specimen where transverse cracks were arbitrarily introduced by static tensile loading before conducting the fatigue tests. The other was an undamaged specimen as new. As a result, it was found that the single transverse crack introduced before the fatigue test did not seriously affect the initiation of edge delamination. Moreover, the difference of the fatigue damage growth behavior depending on the applied stress level was observed. Under the test conditions of low-applied stress level and high-cyclic loadings, it was observed that the edge delamination grew before, or simultaneously with, the transverse crack propagation.",

keywords = "Cfrp laminates, Composites, Delamination, Free-edge effects, High-cycle fatigue, Transverse crack",

author = "Atsushi Hosoi and Shinako Yagi and Keiichi Nagata and Hiroyuki Kawada",

year = "2007",

language = "English",

isbn = "9784931136052",

booktitle = "ICCM International Conferences on Composite Materials",

note = "16th International Conference on Composite Materials, ICCM-16 - {"}A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace{"} ; Conference date: 08-07-2007 Through 13-07-2007",

}

TY - GEN

T1 - Interaction between transverse cracks and edge delamination considering free-edge effects in composite laminates

AU - Hosoi, Atsushi

AU - Yagi, Shinako

AU - Nagata, Keiichi

AU - Kawada, Hiroyuki

PY - 2007

Y1 - 2007

N2 - The high-cycle fatigue characteristics, especially the initiation and propagation of edge delamination, were investigated with quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]S. To investigate the influence that transverse cracks have on the initiation and propagation of edge delamination, two types of specimens are used. One was a specimen where transverse cracks were arbitrarily introduced by static tensile loading before conducting the fatigue tests. The other was an undamaged specimen as new. As a result, it was found that the single transverse crack introduced before the fatigue test did not seriously affect the initiation of edge delamination. Moreover, the difference of the fatigue damage growth behavior depending on the applied stress level was observed. Under the test conditions of low-applied stress level and high-cyclic loadings, it was observed that the edge delamination grew before, or simultaneously with, the transverse crack propagation.

AB - The high-cycle fatigue characteristics, especially the initiation and propagation of edge delamination, were investigated with quasi-isotropic carbon fiber reinforced plastic (CFRP) laminates with a stacking sequence of [45/0/-45/90]S. To investigate the influence that transverse cracks have on the initiation and propagation of edge delamination, two types of specimens are used. One was a specimen where transverse cracks were arbitrarily introduced by static tensile loading before conducting the fatigue tests. The other was an undamaged specimen as new. As a result, it was found that the single transverse crack introduced before the fatigue test did not seriously affect the initiation of edge delamination. Moreover, the difference of the fatigue damage growth behavior depending on the applied stress level was observed. Under the test conditions of low-applied stress level and high-cyclic loadings, it was observed that the edge delamination grew before, or simultaneously with, the transverse crack propagation.

KW - Cfrp laminates

KW - Composites

KW - Delamination

KW - Free-edge effects

KW - High-cycle fatigue

KW - Transverse crack

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M3 - Conference contribution

SN - 9784931136052

BT - ICCM International Conferences on Composite Materials

T2 - 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"

Y2 - 8 July 2007 through 13 July 2007

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