step wedge 中文意思是什麼
step wedge
解釋
步進式光楔-
In this dissertation, al - si / sicp composites brake rotor with diameter of 1200mm was firstly fabricated by a novel spray deposition technology, and simultaneously coupled brake pad was prepared by a novel dry - powder processing route, termed as two - step pressing process. a wedge pressing technology was developed to densify the as - produce al - si / sicp composite brake rotor
本文首次採用噴射沉積技術制備了直徑達1200mm的al - si / sicp制動盤，同時採用二次壓制工藝制備出了配套的合成閘片，研究了制動盤的楔壓緻密化技術、機理，復合材料摩擦磨損性能及機理。 -
As an advanced materials preparation technology, spray - deposition has shown remarkable superiority in producing large - sized alloys and metal matrix composites. however, the spray deposeted preforms usually contain a certain quantity of porosity. besides, the oxide films on the surface of the particles lead to week metallurgic conjunction between the particles. in order to obtain an ideal structure and performance, the porous preforms need further densifying and plastical forming. in this paper, a new technology named wedge pressing was used to densify spray - deposeted 5a06 aluminium alloy, in which the large deformation can be obtained through the sum - up of local deformation and multi - step small deformation. this method can also solved the problems in traditional processing and greatly decreased the producing cost. what ’ s more, the reserch on the wedge pressing desification rules about the large - sized spray deposeted preforms was significant it was vital not only to the further densification of the prefoums but also to the further research on plastical deforming the research was also benefit to the industrialization an the application of the spray deposeted porous materials
坩堝移動式噴射沉積技術作為一種先進的材料制備新技術，在制備大尺寸合金及金屬基復合材料方面具有顯著的優越性。然而噴射沉積坯件特別是大型坯件通常存在一定量的孔隙，顆粒表面存在一定量的氧化膜，顆粒之間未能完全達到良好的冶金結合狀態，因此需要進行后續緻密化和塑性變形才能獲得理想的組織和性能。本文採用一種新型的楔形壓制工藝，即通過局部變形、多道次小變形累積實現大變形的緻密化加工方法，對噴射沉積多孔坯料進行后續緻密化和塑性變形，很好地解決了傳統加工工藝的難題，大大降低了生產成本。 -
After processing, the sensitometrically exposed step wedge is read on a densitometer and the data is plotted.
加工完畢后，即用密度計對試驗膠上復制的階梯級譜的密度進行測定，然後用測得的數據作圖。 -
Step - wedge penetrameter
楔形梯級式 -
When the density step wedge has been properly exposed, the film is then processed.
當密度階梯光楔被正確曝光后，即把膠片沖洗出來。 -
Finally, the fracture behavior of the wedge pressing stock under different temperatures was studied. as a result, the wedge pressing under 450 could avoid the step on the surface of the stock and
室溫拉伸微觀斷口為韌窩和撕裂棱混合型韌性斷口，材料屬延性斷裂。 -
Near the faulty step - break, low stand system developed, and some sediment system distribute broad, such as alluvial fan, low stand wedge, low stand fan, and so on. the sand body can form not only the trap of dying out upward and sand lens, but also fault - iithology trap. the study shows that fault - lithology trap is most important trap style in study area especially sha - 3 formation
斷階坡折附近是低水位體系域發育的重要場所，常發育沖積扇、沖蝕作用的下切河道以及低水位楔狀體、低水位扇體等沉積體系，這些砂體不僅具有形成上傾尖滅或砂巖透鏡體圈閉的條件，而且可形成斷層?巖性圈閉。
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