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- 矢代 茂樹
- 静岡大学工学部機械工学科
書誌事項
- タイトル別名
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- Evaluation of Fatigue Damage Progress in CFRP Cross-Ply Laminates with an Open Hole Using Cohesive Elements
- ケツゴウリョク ヨウソ オ モチイタ エンコウ オ ユウスル CFRP クロスプライ セキソウバン ノ ヒロウ ソンショウ シンテン ノ ヒョウカ
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This study experimentally and numerically investigate fatigue damage in CFRP cross-ply laminates with an open hole under some test conditions, and verified the numerical simulation for predicting the fatigue damage progress proposed by the authors. Splits in the 0° plies, transverse cracks in the 90° plies and delaminations at 0°/90° ply interfaces were experimentally observed due to the cyclic loading, even if the maximum stress was much lower than the stress to generate the initial damage under the static loading condition. All the cracks gradually extended with increasing number of cycles under the low stress levels. After a damage analysis with cohesive elements was confirmed to represent the damage under static loading condition, the fatigue damage observed near the hole was analyzed by the damage analysis with a fatigue damage law that was applied to the stiffness degradation process of cohesive elements. The predicted fatigue damage progress agreed well with the observations, and this approach accurately represented the difference of the damage state due to the change in the critical energy release rate or in the maximum stress in cyclic loading. These experiments and simulations demonstrated the validity of the numerical approach for predicting the fatigue damage progress in composite laminates, and the parameters in the fatigue law for cohesive elements were discussed.
収録刊行物
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- 材料
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材料 60 (5), 425-431, 2011
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390282680396634240
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- NII論文ID
- 130000861063
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 11125267
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可