Tham khảo tài liệu '3d fibre reinforced polymer composites episode 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | 46 3D Fibre Reinforced Polymer Composites Table Description of advanced textile manufacturing techniques Textile process Preform style Fibre orientation Productivity setup Stitching general Complex preforms possible by combining several structures Dependant upon basic fabric being stitched High productivity. Short setup time Stitching embroidery Additional fibres incorporated onto basic fabric Complex fibre orientations possible . maximum stress direction Moderate productivity Short setup time 3D Weaving Flat fabrics simple profiles integral stiffened structures integral sandwich structures Wide range of through-thickness architectures possible but in-plane fibres generally limited to 0 90 directions except with advanced looms High productivity Long setup time 3D Braiding Open closed profiles l c . 0 T . flat fabrics 0 degree fibres. Braiding fibres between 0-80 degrees. 90 degree fibres possible Medium productivity Long setup time Knitting weft and warp Flat fabrics integral sandwich structures very complex preforms Highly looped fibres in meshlike structure Medium productivity Short setup time Knitting noncrimp Flat fabrics Multi-axial in-plane orientation 0 90 45 -45. Up to 8 layers possible High productivity Long setup time It should be stated that these textile manufacturing techniques will not be applicable for all composite components. Design or manufacturing criteria that favour the use of a particular textile process for one application may not necessarily be relevant for another. It is also possible that for some structures it may be necessary to combine a number of the textile processes in order to obtain a product that satisfies the many and often conflicting requirements of cost performance production rate manufacturing risk etc Broslus and Clarke 1991 . This intimate connection between the textile manufacturing process the required preform design the cost and the performance of the resultant component is of particular importance. It has been
