Study on degradation mechanism of long-term strength of carbon fiber reinforced plastics under wet condition

湿态下碳纤维增强塑料长期强度退化机理研究

• 批准号: 23560102
• 负责人: NAKADA Masayuki
• 金额: $ 1.83万
• 依托单位: Kanazawa Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560102/
• 关键词: CFRP; 長期耐久性; 吸水; 粘弾性; 時間－温度換算則; 複合材料; 疲労強度; 耐久性; 静的強度

The influence of water absorption on temperature dependent strength of unidirectional CFRP was studied. Unidirectional CFRP were treated under the two conditions; Dry and Wet. The strengths for typical four directions of unidirectional CFRP were measured under various temperatures at a single loading rate for Dry and Wet specimens. The four directions were longitudinal tension and bending, transverse bending and compression, respectively. The influence of water absorption on long-term durability was evaluated by accelerated testing methodology based on the time-temperature superposition principle which holds for the vescoelastic behavior of matrix resin. As results, it can be clarified that the long-term durability in these four directions of unidirectional CFRP decrease with an increase in temperature and water absorption and that strongly depends on the viscoelastic behavior of matrix resin and the failure mechanism.

研究了吸水率对单向碳纤维增强复合材料温度相关强度的影响。单向CFRP在两种条件下进行处理;干和湿。在不同的温度下，在单一的加载速率单向碳纤维增强塑料的典型的四个方向的强度进行了测试干和湿标本。四个方向分别是纵向拉伸和弯曲，横向弯曲和压缩。基于时间-温度叠加原理，采用加速试验方法评价了吸水率对树脂长期耐久性的影响，该原理适用于基体树脂的粘弹性行为。结果表明，单向CFRP在这4个方向上的长期耐久性均随温度和吸水率的增加而降低，这在很大程度上取决于基体树脂的粘弹性行为和破坏机理。

项目成果

Evaluation of progress of physical aging on viscoelastic behavior of epoxy resin

物理老化对环氧树脂粘弹性行为的影响评价

• 发表时间: 2013
• 作者: Nakada;M. and Miyano;Y.
• 通讯作者: Y.

Long Term Life Prediction of CFRP Laminates under Wet Condition

潮湿条件下 CFRP 层压板的长期寿命预测

• 发表时间: 2012
• 作者: Nakada;M. and Miyano;Y.
• 通讯作者: Y.

一方向CFRP積層板の静的強度の温度依存性に及ぼす吸水の影響

吸水率对单向 CFRP 层压板静态强度温度依赖性的影响

• 发表时间: 2014
• 作者: Masahiro Goto;Seung-zeon Han;Kwangjun Euh;Norihiro Teshima;Terutoshi Yakushiji;Norio Kawagoishi;望月康廣，寺島征哉，鈴木雅年，西本哲也，Robert Anderson;中谷隼人,中谷健志,松葉朗,河野洋輔,荻原慎二;山北裕紀,中田政之,宮野靖
• 通讯作者: 山北裕紀,中田政之,宮野靖

Formulation for Time-Temperature Dependent Static and Fatigue Strengths of Unidirectional CFRP

单向 CFRP 随时间变化的静态强度和疲劳强度公式

• 发表时间: 2013
• 作者: Hioki;T.;Nakada;M. and Miyano;Y.
• 通讯作者: Y.

Formulation for Time-Temperature Dependent Strength of Unidirectional CFRP

单向 CFRP 强度随时间变化的公式

• 发表时间: 2013
• 作者: Miyano;Y.;Hioki;T. and Nakada;M.
• 通讯作者: M.