高温水環境下における樹脂中ガラス繊維の残存強度の予測法の提案
スポンサーリンク
概要
- 論文の詳細を見る
Mechanical properties of glass fiber reinforced plastics (GFRP) mainly depend on the mechanical properties of the glass fiber, which decreases with stress and corrosion. Thus, the calculation method to predict the residual fiber strength after exposure to stress and corrosion is required. In this paper, constant strain test of single fiber composite (SFC) was conducted in hydrothermal environment (deionized water) at 40°C and 75°C to apply the stress and the hydrothermal aging. The residual fiber strength after constant strain test was evaluated by fiber fragmentation test. Besides, the residual strength of glass fiber was predicted using subcritical crack growth model. In the subcritical crack growth model, the surface flaw on the fiber surface which arises while manufacturing was assumed as an ideal crack. The crack growth rate was expressed by the combination of Paris law and Arrhenius model, and the strain history of constant strain test was integrated into the calculation. The residual strength of the glass fiber was calculated based on the fracture mechanics discussing the crack length. The predicted results of the fiber strength showed good agreement with the experimental data at various experimental conditions and the validity of the proposed model was ascertained in this paper.
著者
関連論文
- 極低温環境下におけるガラス単繊維の引張破壊特性(M&P2009機械材料・材料加工部門技術講演会)
- 高分子基複合材料における界面強度のひずみ速度依存性(M&P2009機械材料・材料加工部門技術講演会)
- 高温水環境下におけるSFC中ガラス繊維の強度劣化挙動
- 2920 フラグメンテーション試験を用いた繊維強度評価(S27-1 複合材料の動向とその加工技術(1),S27 複合材料の動向とその加工技術)
- フラグメンテーション試験を用いた繊維強度評価
- CFRP直交積層板におけるトランスバースクラック発生の温度依存性
- ATREX 用 C/C 複合材料製タービンディスクの概念設計
- 熱可塑性エポキシ樹脂をマトリクスとする一方向繊維強化複合材料の衝撃引張り特性評価(自動車技術を支える材料力学)
- 第9回日米複合材料会議報告
- CFRP直交積層板の高温・多湿環境下における形状変化挙動