複合材料擁有質量輕且強度高的優點，但生產過程中無法避免的缺陷或使用中的碰撞都會讓材料中暗藏裂縫，裂縫隨著時日延伸，產生脫層的現象，不但影響材料結構強度與穩定性，甚至會造成材料整體的破壞。因此本論文希望藉由在材料中添加二氧化鈦顆粒，改善環氧樹脂之脆性，提高纖維疊層材料之抗脫層能力，也就是提高臨界能量釋放率GC，以及材料抗衝擊能力，提高其衝擊後壓縮強度。為了得到其臨界能量釋放率及衝擊後壓縮強度，針對不同二氧化鈦含量之試片分別進行DCB (Double Cantilever Beam)以及CAI (Compression After Impact)實驗測試。

Composite materials have the advantages of light weight and high strength, but the unavoidable defects generated in the manufacturing process or damage in duty service may cause the generation of cracks inside the materials. These cracks may extend day by day and lead to delamination which reduces the strength and stability of materials；moreover, they may bring out to failure of entire materials. As a result, we intend to improve ductility and anti- delaminating ability of the composite material by adding titanium dioxide nano particles in this study. In order to obtain the critical energy release rate GC and the compression strength after impact, we carry out DCB (Double Cantilever Beam) and CIA (Compression After Impact) test respectively, for these fiber reinforced composite with nano particles.

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