裂紋的擴展 的英文怎麼說

中文拼音 [lièwéndekuòzhǎn]
裂紋的擴展 英文
propagation of crack
  • 裂 : 裂動詞[方言] （東西的兩部分向兩旁分開） open
  • 紋 : 名詞（花紋; 紋縷兒） lines; veins; grain
  • 的 : 4次方是 The fourth power of 2 is direction
  • 擴 : 動詞（擴大） expand; enlarge; extend
  1. And with the introduction of the modulus of elasticity from budiansky method, the general damage model of rock blasting is established in the paper. by use of the ultrasonic wave, rock damage and fracture mechanism and the fragmentation process during blasting are studied, and the theory presented in the paper has been proven

    運用超聲波等手段對巖石爆破損傷斷裂機理和破壞過程進行了試驗研究，分析了不同爆破條件下巖石內部微裂紋的擴展規律、損傷演化和巖石破碎規律，驗證了本文理論部分的正確性。
  2. Finally, an energy approach is combined with the fem in the simulation of the crack propagation along the fiber / matrix interface in a pull out process. the simulated results are in nice conformity with experimental results. the second part of the research deals with the characterization of the failure process in the fragmentation tests, which is one of the most frequently used test methods in studying thermal mechanical properties of fiber / matrix interfaces

    在這一部分工作的最後，採用能量法與有限元法結合起來，模擬纖維抽拔試驗中裂紋的擴展:針對以往研究工作中的不足之處，在模擬中使用能量釋放率，在表徵界面破壞時，所使用的應力強度因子考慮了纖維和基體兩種材料的不同屬性，並考慮裂紋尖端的單元奇異性，來研究裂紋長度和溫度對裂紋擴展的影響。
  3. With the very low water to cement ratio, rpc has ultra - high strength high ductility and low permeability. in this paper, the compressive strength of rpc can reach to a high point with the number approximately 135mpa. as illustrated from the study results, we can approve some fundamental conclusions : there are big effects on rpc with deferent kinds and properties of raw materials and deferent curing conditions ; stress - strain curve shows the process of destroy with rpc samples ; x - ray diffraction analysis indicates that heat treatment at temperatures 90 accelerate the hydration of rpc sharply, therefore, mechanical and microstructural properties of rpc are highly dependent on heat treatment ; it is believed that rpc materials have excellent resistance to chloride permeability ; during the heat treatment, the shrinkage of rpc developed quickly because of chemical reactions ; the rpc with slag mostly has the advantage of rpc without slag about resistance to solutions corrosion

    研究結果表明：通過對rpc各組分摻量變化的研究，可以找到rpc的最優配合比；試件成型后的熱養護制度對rpc的性能影響巨大； rpc的抗壓應力?應變曲線可以反映出試件受破壞時微裂紋的擴展情況，剛纖維的摻入可以大幅改善rpc的韌性； rpc在成型后存在較大的收縮，而其中的化學收縮要遠遠大於乾燥收縮； rpc具有很強的抗氯離子滲透性能，漿體的密實度很高；通過x射線衍射實驗，可以發現rpc的膠凝體中ch晶體已經幾乎不存在，膠凝體主要由c - s - h凝膠和未水化水泥顆粒組成；在抗溶液侵蝕的實驗中，摻礦渣rpc的抗溶液侵蝕性能在絕大多數情況下要好於不摻礦渣試件，酸、堿溶液和浙江工業大學碩士學位論文摘要一些鹽溶液都會對rpc的結構產生侵蝕作用，但是機理各有不同。
  4. Against the background of the microstructural evolution of three dimensional braiding c / sic composites, used such analytical methods as lm, sem and tem, it is studied that the matrix cracks propagate in the composites with different interphase thickness under three - point - bend testing, as well as under the creep testing. the main conclusions are as follows : 1

    本文以三維編織c sic復合材料微結構演化為背景，採用光學顯微鏡（ lm ） 、掃描電鏡（ sem ）和透射電鏡（ tem ）等分析手段，研究了不同界面相厚度的復合材料在三點彎曲測試中基體裂紋的擴展規律，以及基體裂紋擴展對蠕變過程的影響。
  5. This thesis calculates the sifs of circular cracks in a circular bar, writes a computer program to calculate the initial crack ' s growth life in everywhere of the bar, simulates the evolution course of crack from sub - surface to surface and calculates the growth life of sub - surface crack

    計算了圓形試棒中任意位置存在圓形裂紋時的應力強度因子，編寫了計算程序，可對任意位置處初始裂紋的擴展壽命進行計算。計算了圓形試棒亞表面裂紋擴展到表面的過程和亞表面夾雜的裂紋擴展壽命。
  6. Barrier cracks cannot stop the extending of a fracture, and the strength of the sample is reduced by almost one magnitude because of the existing barrier cracks. there are great differences of ae distribution between specimens with non - penetrate crack and specimens with penetrate crack. as for penetrate crack, ae occurs near the two end of the crack, and for non - penetrate crack, crack, ae occurs near the two end of the crack, and for non - penetrate crack, ae occurs near the front edge of crack, which can be explained well by the theory of 3 - d fracture ; ae distribution near the outer part of collinear crack is similar with that of the end of penetrate crack, and inner part of collinear cracks will run - through with high loads

    關于預制裂紋系對巖石破裂的影響，集中討論了：空障礙體構造不能阻止主裂紋的擴展，反而會使巖石的破裂強度降低近一個量級；由於構造的不同，非穿透切口樣品和穿透切口樣品的聲發射空間分佈特點有本質區別，穿透切口樣品的微破裂在切口兩端發育，而非穿透切口樣品的微破裂在切口兩端之間切口前緣處發育，這用三維破裂理論可以很好地解釋；含共線構造的巖石，裂紋外端的聲發射分佈與單裂紋構造中裂紋端部的聲發射分佈相似，裂紋內端聲發射有密集分佈，在應力達到一定水平時，內端部發生錯斷，而不是貫通。
  7. In order to study the crack growth behavior in ferroelectric ceramics when an electric field is applied, a non - equilibrium statistical theory is used in this paper

    摘要運用非平衡態統計斷裂理論對電場中的中心穿透裂紋的擴展問題進行研究。
  8. Erosion damage decreases rock load area, after defining damage variable, the damage stress in rock can be calculated by the method bring forward by lemaitre conveniently. for surrounding rock of a deep buried tunnel under the condition of drained, its seepage character is not only controlled by the high stress in rock, but also influenced by the development of erosion damage. in the whole course of rock " s deformation and failure, its seepage character decreases with the increment of stress in elastic stage, while " increases with the development of failure

    巖樣中全應力?應變三軸滲透試驗過程中的典型表現為隨著應力的增加，巖體內的空隙和裂紋受載閉合，滲透性降低，應力達到一定閾西南交通大學鷹士研究生學位論文第11頁值后，巖體內部裂紋發生擴展和歸並，滲透性增強；同樣，地下水的動、靜壓力作用對裂紋的擴展和歸並也起著促進作用。
  9. In the tie girder boxes crack growth was detected near the crack tip.

    在系桿箱型梁中裂紋尖端附近檢測到裂紋的擴展。
  10. The fining grains of al - l % si could accelerate the fatigue crack propagation from the near threshold zone to paris zone

    隨著疲勞裂紋擴展速率從近門檻值區向paris區過渡，細小的a （ a1 ）晶粒會加速疲勞裂紋的擴展。
  11. In the resin matrix composite materials filled with fsmf, the load is undertaken by the grain of fsmf and the resin matrix. the grain of fsmf restricts the deformation of the resin matrix, so the strength is improved. furthermore, the grain of fsmf can consume the energy of strain and controls the crack expand, so build up toughness

    在fsmf填充樹脂復合材料中，載荷是由fsmf顆粒和樹脂基體共同承擔的， fsmf顆粒以機械約束方式限制樹脂基體變形，從而產生強化； fsmf顆粒可以引發銀紋和剪切帶等損傷消耗應變能，並通過鈍化和釘扎機制阻礙裂紋的擴展，從而產生增韌。
  12. Tic ha a high melting temperature and high resistance to corrosion and oxidation. since the addition of tic to the ai2o3 matrix can increase some mechanical properties, the properties of tic particles reinforced al2o3 - based ceramics were widely studied. the common method used to fabricate the al2o3 - tic ceramics is to add tic particles directly into al2o3 matrix by ball milling

    Tic具有高熔點（ 3067 ）和高硬度（ hv = 2800 ） ，在al _ 2o _ 3陶瓷中摻入tic后又可抑制al _ 2o _ 3晶粒的生長，使復合陶瓷具有更高硬度和強度，而且分散的tic粒子可以阻礙裂紋的擴展，對斷裂韌性的提高也有一定的作用。
  13. It shows that damage cracks was borne by the prefabricated crack, and the layer which has the large area of prefabricated crack is the damage area of sandstone

    結果表明，含有預制裂紋的紅砂巖的損傷演化和裂紋的擴展受到預制裂紋的影響，破壞裂紋從預制裂紋尖端起裂，並且最終破壞發生於含有最大預制裂紋的層面。
  14. Then a model on electromagnetic emission relying on the extent of cracks is put forward. using this model, the amplitude of electrical field and magnetic field, the largest frequency are estimated

    研究表明，混凝土隨裂紋的擴展產生幅值逐漸增加的電發射脈沖；混凝土隨材料組成不同在開裂時產生不同形式的電發射脈沖。
  15. The width of stacking fault increased as partial dislocations move forward. in the fracture of 18 - 8 stainless steel, many dislocations were emitted from the crack tip during the early stage of crack propagation and moved forward, and then a dfz was formed between the crack tip and the pile - up dislocations. the dfz is an elastic zone

    不銹鋼斷裂時，裂尖首先發射位錯，並離開裂尖向前運動，裂尖前方留下無位錯區，位錯反塞積在無位錯區的端部，無位錯區是應變很高的異常彈性區，隨著裂紋的擴展，無位錯區逐漸發生晶體碎化和轉動。
  16. An losipescu - type of fixture, which had been previously used for the static shear strength tests of unidirectional laminates or metal materials, was proved useful for the shear static and fatigue tests of multidirectional laminates

    （ 6 ）進行mdyb - 3座艙蓋有機玻璃撞擊損傷剩餘強度和疲勞裂紋擴展試驗，發現撞擊損傷引致的疲勞裂紋的擴展規律與理想的表面裂紋明顯不同。
  17. With the experiment of surface crack growth of bhw - 35 weld metal, the law of the surface crack shape variation when it grows was obtained, and the law of surface crack growth rate was also gotten. these direct the evaluation of the surface crack fatigue growth life and the critical value of its length

    對bhw - 35鋼焊縫材料進行表面裂紋擴展試驗研究，得到裂紋的擴展形貌變化規律，並對其疲勞擴展壽命進行預測研究，為汽包下降管角焊縫部位的表面裂紋擴展壽命預測提供依據，同時也確定了其表面裂紋擴展的臨界值。
  18. The size and shape of the crack front were updated using the result of finite element program, and then the crack propagation was simulated by moving the node

    利用有限元計算的結果來自動更新裂紋前沿的尺寸和幾何形狀，並使用節點移動法來模擬裂紋的擴展過程。
  19. And introduces the method of reliability into the inspection of flaw, in order to reveal the phenomenon of flaw extend

    並將可靠性引入到裂紋巡檢上來，則主要是為了更加確切地反映裂紋的擴展情況。
  20. How to calculate the velocity of crack growth and how to get the life time of a structure with a nonlinear viscoelastic crack are attractive problems

    如何預測裂紋的擴展速度、預測材料的壽命成為引起廣泛關注的問題。
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