纖維取向 的英文怎麼說
中文拼音 [xiānwéiqǔxiàng]
纖維取向
英文
fiber orientation-
Discussion on extra high speed and super short spinning process of fine denier pet
超短程聚酯細旦高取向纖維紡絲工藝探討Numerical simulation and experimental study for injection molding and fiber orientation distribution of short fiber - thermoplastic polyure - thane elastomer composites were done
摘要對短纖維聚氨酯彈性體復合材料的注射充模及纖維取向分佈進行了數值模擬和實驗研究。Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大Toughening thermoset matrix composites with interlayered thermoplastic particles is an effective method to improve fracture toughness and impact resistance without sacrificing hot / wet properties. furthermore, transverse strength, fatigue resistance and solvent resistance can also be enhanced. drapability and tackness of interleaved prepreg is maintained as conventional level
對樹脂基體復合材料採取層間顆粒增韌是提高復合材料層壓板韌性、抗沖擊能力和抗分層能力的有效途徑，在保持原有復合材料濕熱性能的前提下，通過層間顆粒增韌，還可以改善垂直纖維方向的強度、抗疲勞性能以及耐溶劑性，並不影響原有的成型工藝。When draw down ratio was greater than 1, the dope thread in the air gap was axially drawn with the rising of orientation degree so the fiber tenacity was strengthened
在噴頭拉伸比大於1的情況下，原液細流在空氣層中得到軸向拉伸，加大了初生纖維的取向度，所以纖維強度得到加強。It is the first time to get phbv fiber by melt spinning in china. and the changes of fiber crystallization structure and orientation structure under force were studied
並在國內首次通過熔融法制備了phbv纖維，首次論證了纖維結晶結構的變化及其在外力作用下取向結構的變化。The results indicate that : ( 1 ) as the drawing ratio increase, the mechanical properties, crystallinity and orientation of uhmwpe fiber all increase greatly, while the average crystal size decreases
結果表明:隨拉伸的進行， uhm筋胭e纖維的力學性能、結晶度、取向度均大大提高，而晶粒尺寸逐漸變小。In the numerical methods section, a finite element / control volume mold filling simulation, a tensor representation of fibre orientation and a finite element solution of the transient fibre orientation equations are combined in the program. the input data and output results are visualized by means of finite element software
程序中用有限單元控制體方法模擬模壓流動，用表徵纖維取向的張量和有限元伽遼金方法來解決瞬時纖維取向方程，用計算機圖形原理編程實現對smc流動軌跡、纖維取向分佈的計算機模擬。Based on the method of cell ( moc ), the effective elastic properties of resined fiber bundle with parallel or arbitrary orientation was studied, and a micro - mechanical model of resined plain - woven carbon fabric was established with the classical laminate theory, then, the method of calculation of the elastic moduli of resined plain - weave carbon fabric was presented, and can be extended to the whole carbon / phenolic composite
基於元胞法（ moc ）計算了預浸樹脂的平直以及任意取向的纖維束的有效彈性常數。基於經典層板理論用替代層法建立了預浸樹脂平紋機織碳布的細觀力學模型，進而給出了預浸氨酚醛樹脂的平紋機織碳布的彈性模量的計算方法，該方法可推廣到碳酚醛復合材料。During flap harvest, these perforators are meticulously dissected free from the surrounding muscle, which is spread in the direction of the muscle fibers and preserved intact
在取皮瓣的過程中，這些蔓延在肌纖維方向的穿支被小心的從周圍肌肉中分離出來，保持了完整性。The studies on the influence of stretching process on the appearance and mechanical performances of camp fibers showed, that orientation of the molecular along the axis of the fiber was improved after stretching in the steam bath, and the mechanical performance were also improved
研究了拉伸工藝對camp纖維形貌及力學性能的影響。結果表明， camp纖維在蒸氣浴中進行高倍拉伸后，大分子沿纖維軸向取向程度提高，纖維的力學性能得到改善。Finally the orientation states of 2 - d thin plate are simulated in a certain velocity. the numerical results will be of a certain theoretical function to placement of smc charge, design of mold and optimization of the technological parameters
最後通過實例對二維薄板在恆定合模速率下的纖維取向進行了計算機模擬計算，其結果對smc鋪料的方式、模具設計以及壓制工藝參數的最終確定具有一定的理論指導意義。Effects of tensor closure models and 3 - d orientation on the stability of fiber suspensions in a channel flow
張量封閉模型與三維取向分佈對纖維懸浮槽流穩定性的影響Then theories of describing and predicting fibre orientation in flowing suspensions are investigated and a mathematics model of planar orientation in a two - dimensional domain is derived
接著研究了在流動的懸浮液中描述和預測纖維取向的理論，導出了二維流場中纖維取向的數學模型。Then the two orientation states of fibres and three closure approximations are examined. analyses of fibre orientation and vorticity in the suspension can be contacted by stress features
另外比較纖維的平面與三維取向狀態、三種封閉格式對穩定性的影響，通過應力將纖維取向分析同流場渦量分析聯系起來。The results of experiment and numerical simulation of fiber orientation were similar, which showed that the academic model was feasible
纖維取向分佈實驗結果與數值模擬結果較一致，表明理論模型有一定的實用價值。The results showed that the fiber orientation distribution was mainly dependent on the shape of the cavity, fiber contents and molding condition
結果表明，纖維取向分佈主要取決于模腔幾何形狀、纖維含量和注射工藝條件等因素。The mechanism of physical damage of carbon fibers was clarified firstly. the precursor which attached on carbon fibers changes to inorganic ceramic under high temperature with large volume shrinkage which appearing at cracks with fiber traction and the cracks are mainly vertical to fiber axis. because of mismatched coefficients of thermal expansion, carbon fibers suffer multiple thermal stresses and are damaged
首次探明了碳纖維熱應力物理損傷機制，即碳纖維表面附著的先驅體在高溫下無機化形成陶瓷體，同時伴隨著大的體積收縮，在碳纖維的牽引下，基體的體積收縮以開裂形式出現，裂紋的取向以垂直於纖維軸向為主，由於碳纖維與基體熱膨脹系數失配，致使碳纖維在降溫過程中受到復雜熱應力，引起碳纖維損傷。Orientation distribution of fibers and rheological property in turbulent channel flow of fiber suspensions
纖維懸浮槽道湍流中纖維取向分佈和流變特性The modulus and strength of pet / mmt fiber were lower than those of pure pet fiber. this is probably because the lamellar montmorillonite does not disperse randomly and completely, and besides, the spinning and drawing process in our research is limited to make the montmorillonite layers better oriented along the fiber
但pet mmt復合纖維的模量及斷裂強度比純pet纖維稍有下降，這是因為在pet mmt復合材料中蒙脫土片層還沒有達到理想的無規分散，存在一定的團聚及未完全剝離現象，此外現有的紡絲拉伸工藝還不能使蒙脫土片層在纖維縱向形成很好的取向。分享友人