中國材料名師講壇第115講——南方科技大學葉林 教授
葉林，南方科技大學系統設計與智能制造學院講席教授, 1987年于北京航空航天大學獲得博士學位。1990年獲德國亞歷山大洪堡基金會研究獎金赴德國凱撒斯勞滕大學復合材料研究所工作。1992年應聘為澳大利亞悉尼大學機械工程系講師，此后在悉尼大學歷任高級講師、Reader、教授、學院院長、先進材料技術中心主任等。
葉林教授是復合材料研究領域公認享有國際聲譽和學術地位的學科帶頭人。葉林教授的研究涉及高性能復合材料力學的諸多領域，包括先進復合材料、智能材料與結構、納米材料及納米增強復合材料、結構完整性及耐久性。葉林教授在先進復合材料和功能材料的基礎研究和技術開發領域均做出了杰出的貢獻，獲得了世界范圍內的廣泛認可。鑒于葉林教授在先進復合材料等領域的杰出貢獻和影響力，2004年獲得德國洪堡基金會的Friedrich Wilhelm Bessel研究獎。2005年，為表彰葉林教授為澳大利亞航空航天工業復合材料和智能材料領域的杰出貢獻，當選澳大利亞工程院（ATSE）院士（FTSE）。
講座題目：
Additive manufacturing of continuous fiber composites using fused filament fabrication
講座內容：
Fused filament fabrication (FFF) has been extensively studied in recent years because of its capability for manufacturing continuous fiber composite parts. The successful fabrication of high quality continuous fiber composite parts using FFF is secured by completion of a few key mechanisms such as precise deposition of a filament and fusion between a depositing filament and filaments deposited in previous steps, while the fusion is modulated by two key mechanisms, i.e., “intimate contact” and “autohesion”. This presentation summarizes some recent results on additive manufacturing of comtinuous CF/PA composites. A mechanistic model is developed to describe “intimate contact” and “autohesion” processes during the “interlaminar” deposition mode, equipped with parameters such as surface profile of depositing filament, temperature of depositing head, contact duration between filaments, contact pressure between filaments, while the latter is measured by a high precision 3D dynamometer instrumented on the 3D printing platform. It is concluded that a high quality pre-impregnated filament of a precise diameter and high precision deposition of the filament in a defined path with a tailored processing window of deposition temperature, depositing speed, and deposition pressure are the keys for the successful fabrication of high quality continuous fiber composite parts using FFF.