Measurement and numerical simulation of three-dimensional fiber orientation states in injection-molded short-fiber-reinforced plastics

2003 ◽  
Vol 88 (2) ◽  
pp. 500-509 ◽  
Author(s):  
Kwang Seok Lee ◽  
Seok Won Lee ◽  
Kwansoo Chung ◽  
Tae Jin Kang ◽  
Jae Ryoun Youn
Keyword(s):  
Numerical Simulation ◽  
Fiber Orientation ◽  
Three Dimensional ◽  
Short Fiber ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Injection Molded ◽  
Fiber Reinforced Plastics

Confocal microscopy measurement of the fiber orientation in short fiber reinforced plastics

2001 ◽  
Vol 2 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Kwang Seok Lee ◽  
Seok Won Lee ◽  
Jae Ryoun Youn ◽  
Tae Jin Kang ◽  
Kwansoo Chung
Keyword(s):  
Confocal Microscopy ◽  
Fiber Orientation ◽  
Short Fiber ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Microscopy Measurement ◽  
Fiber Reinforced Plastics

Spinning of Staple Hybrid Yarn from Carbon Fiber Wastes for Lightweight Constructions

2015 ◽  
Vol 825-826 ◽  
pp. 695-698 ◽  
Author(s):  
Martin Hengstermann ◽  
Nadine Raithel ◽  
Anwar Abdkader ◽  
Chokri Cherif
Keyword(s):  
Carbon Fiber ◽  
Short Fiber ◽  
High Price ◽  
Fiber Reinforced ◽  
Reinforced Plastics ◽  
Mixing Ratios ◽  
Hybrid Yarn ◽  
Molded Parts ◽  
Injection Molded ◽  
Fiber Reinforced Plastics

The reuse of CF-wastes (rCF) is desirable due to the energy-intensive manufacturing, high price and the disposal problem of carbon fibers. It is a challenging process to spin yarn from rCFs in a short staple spinning production line which ensures a much higher strength later in the manufacturing of CFRP (carbon fiber reinforced plastics) parts than that of the parts from rCF-nonwovens or, from short-fiber reinforced injection molded parts. This spinning technology consists of several subsequent processes such as carding, drafting and spinning on a flyer frame. It is possible to produce hybrid yarn up to 2000 tex, which fineness is similar like a roving. The machines used to produce yarn for this purpose were specially modified and adapted, so that the brittle CF can be processed smoothly. Carded and draw frame slivers with different fiber lengths and mixing ratios were produced and later the high-quality hybrid yarn has been spun with different yarn twists.

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