編織纖維製成的預浸布複合材料廣泛運用在航空、汽車、船舶等許多方面，因預浸布具有較高的纖維含量和一致的含膠量由於其優異的力學性能而被廣泛應用。然而，在製造中會遇到許多複雜形狀使疊層過程中產生變形，預浸布纖維的變形可能會對最終複合材料的強度產生影響。本研究旨在玻璃纖維預浸布變形後製成的複合材料其強度變化與未變形的差異。針對玻璃纖維編織預浸布變形進行探討，將5張裁切好的玻璃纖維編織預浸布手工疊貼在一起，使用夾具固定拉伸形成剪力變形角度為 10°、 20° 平行四邊形，使用高壓釜進行高溫高壓固化，固化後進行拉伸試驗，研究未變形與拉伸變形固化後強度之差異。實驗數據指出，纖維變形後其徑向拉伸強度及楊氏係數增加，軸向拉伸強度及楊氏係數減少，本研究結果對預浸布纖維變形製成的複合材料強度影響，有助於優化製造和處理過程，確保最終複合材料產品具有所需的力學性能。

Woven fiber prepreg composites are extensively utilized across aerospace, automotive, and marine industries due to their remarkable mechanical properties resulting from high fiber content and consistent resin distribution. However, the manufacturing process introduces challenges in maintaining the strength of the final composite material due to the deformation of prepreg fibers. This research aims to examine the impact of fiber deformation on the strength of composite materials, specifically focusing on glass fiber woven prepreg. To induce tensile deformation, five cut pieces of prepreg are manually overlapped and securely fixed, Deformation was introduced by stretching to create shear angles of 10° and 20°. Subsequently, the composite materials undergo curing in a high-pressure autoclave, followed by tensile testing to compare the strength of unstrained and strained samples. It is observed that after fiber deformation, there is an increase in tensile strength and Young's modulus in the 0-degree direction. However, in the 90-degree direction, a decrease in these properties is observed. These results contribute to a deeper understanding of how prepreg fiber deformation affects the strength of composite materials, enabling optimization of manufacturing and processing techniques to achieve the desired mechanical performance in the final composite products.

1.Mitchell, C., et al., Investigation into the changes in bending stiffness of a textile reinforced composite due to in-plane fabric shear: Part 1 – Experiment, in Composites Part A: Applied Science and Manufacturing. 2016. p. 94-102.
2.Rusnáková, S., M. Kalová, and Z. Jonšta, Overview of production of pre-preg, prototype and testing, in IOP Conference Series: Materials Science and Engineering. 2018, IOP Publishing. p. 012069.
3.許明發 and 郭文雄編著, 複合材料纖維學. 全威圖書, 2002.
4.許明發 and 郭文雄編著, 複合材料 高立 2007.
5.Morgan, P., Carbon fibers and their composites. 2005: CRC press.
6.Ahn, K. and J.C. Seferis, Prepreg process analysis. Polymer composites, 1993. 14(4): p. 349-360.