针对真空辅助树脂传递模塑(vacuum assisted resin transfer molding,VARTM)工艺成型玻纤/环氧树脂复合材料存在气泡、聚胶等问题,采用PAM-RTM软件对该复合材料的VARTM成型工艺进行模拟仿真。通过改变流道的设计方案,控制树脂黏度,观测...针对真空辅助树脂传递模塑(vacuum assisted resin transfer molding,VARTM)工艺成型玻纤/环氧树脂复合材料存在气泡、聚胶等问题,采用PAM-RTM软件对该复合材料的VARTM成型工艺进行模拟仿真。通过改变流道的设计方案,控制树脂黏度,观测充模过程中树脂的压力分布及充模时间,优化实验工艺,进而对模拟结果进行实验验证。结果表明:最佳注射方案是平行于Y轴一侧线性注入,另一侧线性排出。多线性注射虽然可以提高效率但是同时会出现交汇、聚胶等现象。充模时间随树脂黏度的增加而增加,随着充模过程的进行,黏度过高的树脂会发生部分固化,影响纤维的浸润。因此,树脂黏度控制在0.5 Pa·s左右较为合适。根据模拟优化结果,采用VARTM工艺分别制备2种典型的玻纤/环氧树脂复合材料。发现最佳注射方案,制备的复合材料表面光滑,无明显气泡、聚胶等缺陷,注射方案较好。展开更多
Selection of materials,as an area of design research,has been under considerable interest over the years.Materials selection is one of the most important activities in the product development process.Inappropriate dec...Selection of materials,as an area of design research,has been under considerable interest over the years.Materials selection is one of the most important activities in the product development process.Inappropriate decision of materials can cause the product to be reproduced or remanufactured.To avoid this circumstance,one of the useful tools that can be employed in determining the most appropriate material is analytical hierarchy process(AHP).To illustrate the application of AHP,six different types of composite materials were considered.The most appropriate one for suitability of use in manufacturing automotive bumper beam was determined by considering eight main selection factors and 12 sub-factors.The AHP analysis reveals that the glass fibre epoxy is the most appropriate material because it has the highest value(25.7%,mass fraction) compared with other materials.The final material is obtained by performing six different scenarios of the sensitivity analysis.It is proved that glass fibre epoxy is the most optimum decision.展开更多
基金the financial support through Research University Grant Scheme 2007 (RUG 2007) with vote number 91045
文摘Selection of materials,as an area of design research,has been under considerable interest over the years.Materials selection is one of the most important activities in the product development process.Inappropriate decision of materials can cause the product to be reproduced or remanufactured.To avoid this circumstance,one of the useful tools that can be employed in determining the most appropriate material is analytical hierarchy process(AHP).To illustrate the application of AHP,six different types of composite materials were considered.The most appropriate one for suitability of use in manufacturing automotive bumper beam was determined by considering eight main selection factors and 12 sub-factors.The AHP analysis reveals that the glass fibre epoxy is the most appropriate material because it has the highest value(25.7%,mass fraction) compared with other materials.The final material is obtained by performing six different scenarios of the sensitivity analysis.It is proved that glass fibre epoxy is the most optimum decision.
