Automation Systems Interconnect公司推出组合式DIN导轨安装CSD2电源，它采用120VAC至240VAC“通用”额定输入电压，使其适合世界范围的设备使用。CSD2为第2等级隔离设备，它不需要接地连接，因而简化了安装并降低了成本。其他特性有...Automation Systems Interconnect公司推出组合式DIN导轨安装CSD2电源，它采用120VAC至240VAC“通用”额定输入电压，使其适合世界范围的设备使用。CSD2为第2等级隔离设备，它不需要接地连接，因而简化了安装并降低了成本。其他特性有短路、过载和过热保护。它直接安装到DIN导轨上，其功能、说明及接线信息均清楚显示在前面板上。展开更多
During the automated placement process of dry fibers,the positioning and fixation of dry fiber gauze belts are achieved by spraying setting agents.The amount of the setting agent is difficult to control when it is spr...During the automated placement process of dry fibers,the positioning and fixation of dry fiber gauze belts are achieved by spraying setting agents.The amount of the setting agent is difficult to control when it is sprayed manually.Furthermore,it can also affect the permeability of the preform,resin injection and the quality of the vacuum assisted resin infusion(VARI)molding,resulting in a decrease in the mechanical properties of composite materials.This study utilizes dry fiber automated placement equipment and an automated spraying system to manufacture preform structures,followed by VARI process to prepare composite samples with varying setting agent contents.Subsequently,mechanical characterization including interlaminar shear,bending and tensile testing is conducted to investigate the influence of setting agent content on both the manufacturing process and the mechanical properties of composite products.The results show that the interlaminar shear strength,bending strength and tensile strength of the sample gradually decrease with the increase of the content of the setting agent.The optimal setting agent content for automated laying of dry fiber is determined to be 4%-6%,balancing the preformed body’s layup quality and its impact on mechanical properties.Compared with agent-free samples,this range results in reductions of 3% in interlaminar shear strength,9% in bending strength,11% in bending modulus,and 13%-16% in tensile strength.展开更多
文摘Automation Systems Interconnect公司推出组合式DIN导轨安装CSD2电源，它采用120VAC至240VAC“通用”额定输入电压，使其适合世界范围的设备使用。CSD2为第2等级隔离设备，它不需要接地连接，因而简化了安装并降低了成本。其他特性有短路、过载和过热保护。它直接安装到DIN导轨上，其功能、说明及接线信息均清楚显示在前面板上。
基金supported by Jiangsu Provincial Key Research and Development Program(No.BE2023014-4).
文摘During the automated placement process of dry fibers,the positioning and fixation of dry fiber gauze belts are achieved by spraying setting agents.The amount of the setting agent is difficult to control when it is sprayed manually.Furthermore,it can also affect the permeability of the preform,resin injection and the quality of the vacuum assisted resin infusion(VARI)molding,resulting in a decrease in the mechanical properties of composite materials.This study utilizes dry fiber automated placement equipment and an automated spraying system to manufacture preform structures,followed by VARI process to prepare composite samples with varying setting agent contents.Subsequently,mechanical characterization including interlaminar shear,bending and tensile testing is conducted to investigate the influence of setting agent content on both the manufacturing process and the mechanical properties of composite products.The results show that the interlaminar shear strength,bending strength and tensile strength of the sample gradually decrease with the increase of the content of the setting agent.The optimal setting agent content for automated laying of dry fiber is determined to be 4%-6%,balancing the preformed body’s layup quality and its impact on mechanical properties.Compared with agent-free samples,this range results in reductions of 3% in interlaminar shear strength,9% in bending strength,11% in bending modulus,and 13%-16% in tensile strength.
