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研究生:蘇怡烘
研究生(外文):Su Yi-Hong
論文名稱:碳纖維\聚二醚酮複合材料積層板高速撓曲之破損機制
論文名稱(外文):Damage,Mechanism of AS4/PEEK APC-2 Composite Laminate Subjected to High-Velocity Flexural Tests
指導教授:任明華任明華引用關係
指導教授(外文):Jen Ming-Hwa
學位類別:碩士
校院名稱:國立中山大學
系所名稱:機械工程研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
畢業學年度:86
語文別:中文
中文關鍵詞:碳纖維\聚二醚酮複材撓曲高速衝擊穿透破損機制脫層
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本文之實驗工作,完成碳纖維/聚二醚酮中、高速撓曲試驗,拍攝整個破壞過程,了解破壞機制,量取變形量、損傷面積、強度及勁度之變化,探討積層板疊序、衝擊頭速率等參數之影響。  由實驗結果我們可以發現[0/(45/90]2S、[(30]4S、[(45]4S、[(60]4S試片是以雙邊固定進行試驗,撓度與能量似乎維持著某種程度的關係,當撓度變化越大時,則能量的吸收就越多,而機械性質的衰退則越嚴重,惟[(60]4S試片例外﹔因為其機械性質本身就太低,即使[(60]4S試片未受到任何衝擊,就已經比其他已受衝擊之試片偏低了許多,故並不比較本類試片,但必須提到本類試片其吸收衝擊能之能力卻是四類試片最好的,且產生的撓度亦是最大的,其次為[(45]4S試片,而後為[0/(45/90]2S試片,最後是[(30]4S試片。  [0/90/(45]2S、[0/90]4S試片是以四邊固定進行試驗,能量的吸收是[0/90]4S試片多於[0/90/(45]2S試片,但機械性質的衰退則以[0/90]4S試片較嚴重。

Composite materials have replaced conventional metals partly applied to many related industries. They not only possess high specific strength and stiffness, but as the demand increasings have to survive due to sevre environmental testing, such as electic lighting, high and low temperature, impact,moisture and corrodibility. Then, the R&D in composites progresses rapidly. This paper is aimed to investigate the deflection, damage and mechanism of AS-4/PEEK APC-2 Composite laminates subjected to Quasi-static bending and high-velocity impact flexural testing at room temperature. It is well known that delamination is one of the dominant factors that results in composite laminate failure. Thoughened composites are found highly resistant to delamination and impact. Then PEEK is suitably selected to be matrix in our paper. Additionally, we intend to perform moderate-and high-velocity impact tests is a trial and compensation for the lack of related investigations, because most studies have been focused on low-velocity impact until now. The experiment of our work was to accomplish static,high and midrate velocity impact tests in Carbon/PEEK APC-2 laminates. The whole failure process was photoed and failure mechanism was understood. We measured the deflection, damage area and the reduction of stiffness and strength. The parametric study of stacking seqnence and impact velocity was investigate. In our process of test, specimens of [0/(45/90]2S, [(30]4S, [(45]4S and [(60]4S, they were two sides fixed for test. We can find some kind's relationship between deflection and absorb energy of specimens; as deflection of specimens had changed for high rate and specimens absorbed energies were more and more, at the same time, specimens' mechanism properties (eg: young's modulus & ultimate stress) was dceay too. But there specimens of [(60]4S were exception, because the kind of [(60]4S had more lower mechanism properties than other kinds specimens, even specimens of [(60]4S done have not impact and their mechanism properties were lower than other kinds of specimens' that had impact already. By this reason, we don't compare specimens of [(60]4S to other specimens, and we must say that; the [(60]4S specimens were the best in four kinds' specimens for absorbed energies. Specimens of [0/90/(45]2S and [0/90]4S were four sides fixed to test. In the test process, we found there [0/90]4S specimens were more better than [0/90/(45]2S specimens for absorbing impact energies, but the mechanism properties decay, [0/90]4S specimens were also more serious than specimens of [0/90/(45]2S.

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