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首页> 外文期刊>Mechanics & Industry >Analysis of the multilayer woven fabric behaviour during the forming process: focus on the loss of cohesion within the woven fibre network
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Analysis of the multilayer woven fabric behaviour during the forming process: focus on the loss of cohesion within the woven fibre network

机译：成型过程中多层织物行为的分析：专注于编织纤维网内的粘合损失

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摘要

The first step in the composite manufacturing process consists of forming a flat textile reinforcing structure into a 3D shape. The quality of the final composite part is affected by the presence of defects induced during the forming process. Loss of cohesion in the woven fibre network (intra-ply yarn sliding) is a frequent defect in the forming process. It is expected when the cohesion between the yarns is weak or when the blank holder pressure is high. However, the mechanism of formation of this defect is not fully understood. In the present study, forming experiments with friction-based holder have been conducted for a monolayer twill woven carbon fabric in two orientations and for two plies of this fabric with different relative orientations. The occurrence of the intra-ply yarns sliding has been observed as a function of the blank holder pressure. A correlation between the occurrence of this defect and the fabric orientation has been noticed. Furthermore, the effect of the fabric orientation, number of plies, relative plies orientation and blank holder pressure on the recorded forming force and on the fabric in-plane shear is also reported and analysed.
机译：复合制造工艺中的第一步包括将平坦的纺织品加强结构形成为3D形状。最终复合部件的质量受到在成形过程中诱导的缺陷的存在的影响。编织纤维网中的内聚力丧失（术中纱线滑动）是成型过程中常意的缺陷。预期纱线之间的内聚力较弱或当坯料支架压力很高时。然而，不完全理解这种缺陷的形成机制。在本研究中，已经为两种取向的单层斜纹织物碳织物和具有不同相对取向的两个织物的单层斜纹织物碳织物进行了形成实验。已经观察到丛林纱线滑动的发生作为坯料保持器压力的函数。已经注意到这种缺陷的发生与织物取向之间的相关性。此外，还报道并分析了织物取向，层数，相对位置取向和坯料压力对织物内剪切的影响。

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