propagation of crack 中文意思是什麼

propagation of crack 解釋
裂紋的擴展
  • propagation : 持續培養
  • of : OF ＝Old French 古法語。
  • crack : vt 1 使破裂；敲破，敲碎，砸碎（陶器等）；嗑（瓜子等）；【化學】裂化（石油等）。2 把（槍打得、鞭子...
  1. Atomistic simulation of crack propagation and its size - dependent behavior

    分子動力學模擬裂紋擴展及相關尺寸行為
  2. Radius of crack subcritical propagation area in damaged rockmass

    損傷巖體中的裂紋亞臨界擴展區半徑
  3. Perhaps the simplest illustration of the role of stress waves in dynamic crack propagation and crack arrest is given by the one-dimensional analysis of the double torsion specimen.

    也許最簡單地說明在動態裂紋擴展和止裂中應力波的規律是由雙扭（DT）試件的一維分析給出的。
  4. Study on the laws of propagation of short fatigue crack

    短裂紋疲勞擴展規律的研究
  5. Numerical simulation of propagation of oriented crack prefabricated in hydraulic fracturing

    預制定向裂紋水力壓裂延伸數值模擬
  6. Except for a small length of web at the first fracture location, none of the cracks exhibited a brittle fracture mode of crack propagation.

    除第一個斷裂位置的一小段腹板外，沒有一條裂紋顯示出裂紋擴展的脆性斷裂模式。
  7. Approximate calculation of crack propagation rate of metal corrosion fatigue

    金屬腐蝕疲勞裂紋擴展速率的近似計算
  8. The results show that the thermal fatigue cracks after forming propagate preferentially in the hard phase, and the propagation of crack is stoped and dulled when it meet steel basic phase

    結果表明:萌生后的熱疲勞裂紋優先在硬質相中擴展，遇到鋼基體相后受阻、鈍化。
  9. The micromechanisms of fracture in engineering materials have been studied in this thesis, with particular emphasis on the dislocations behavior in the front of crack tip and the processes of crack nucleation and propagation on nanometer scale. the relation between the microprocesses of fracture and the macromechanical behaviors were investigated, which will be helpful to the strengthening and toughening of engineering materials

    本文首先對材料斷裂文獻進行綜述，了解斷裂微觀機理研究的過去成就、現狀和發展，確定本文研究的內容為工程材料斷裂的微觀機理，側重裂尖微區位錯行為和納米尺度上微裂紋形核與擴展過程及微觀組織的影響，斷裂微觀過程與宏觀力學行為的關系，為工程材料的強韌化提供理論依據。
  10. The results revealed that the fatigue degradation of the material includes three stages : micro - crack appearing at initial stage, a long process of crack propagation and fatigue. failure of the material after suffering the extraordinary degradation of stiffness

    結果表明，材料的疲勞衰變主要分為3個階段：產生小裂紋的初始階段；損傷累積擴張階段；材料剛度加速退化，疲勞破壞階段。
  11. It was found that many dislocations were emitted from the crack tip during the early stage of crack propagation and were driven out of the crack tip area, and them piled up inversely. a closed dislocation free zone ( dfz ) was formed between the crack tip and the pile - up dislocations. keeping displacement constant, the dislocations were still emitted from the crack tip for a while

    本文首先系統地研究了工業純金屬（ fe ， al ， ti和mg ）斷裂的微觀過程，發現所研究的工業純金屬斷裂過程裂尖均首先發射位錯，並離開裂尖向前運動、在裂尖留下無位錯區，位錯反塞積在五位錯區的端部，反塞積位錯群一般呈封閉狀包圍無位錯區。
  12. 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。
  13. The microscopic plastic deformation of the local crazes cause the change of crack opening loads. therefore, the fatigue crack closure concept could be introduced. a crack closure model of mdyb - 3 pmma were recommended and phenomenologically formulated for positive and negative stress ratios separately, according to the testing results of fatigue crack propagation

    本文討論了有機玻璃疲勞裂紋擴展機理，提出，銀紋的形成是裂紋形成和擴展的基礎，從微觀上解釋了裂紋形成和擴展的原因，並結合金相分析結果，明確提出塑變誘導閉合和粗糙誘導閉合是有機玻璃疲勞裂紋面閉合的兩個主要原因，成功的解析了裂紋面的閉合現象。
  14. Analyses of dynamic crack propagation and crack arrest for a specified initial flaw size, external geometry, and applied load can be conducted in either of two different ways.

    為特定的初始裂紋尺寸、外部幾何形狀和應用載荷對動態裂紋擴展和裂停止進行分析，可以用兩種不同方法中的任何一種來進行。
  15. A fractal description of crack propagation in high percentage fiber reinforced concrete under fatigue loading

    高密度鋼纖維混凝土疲勞裂紋擴展的分形描述
  16. By analyzing the influence of hemisphere pits with different dimension and ellipsoid pits with different aspect ratio on stress and strain distribution of lap joint, the possible propagation of fatigue crack was discussed, and the effects of localized pitting corrosion on the structural integrity of lap joints were discussed

    通過分析不同尺寸的半球形蝕坑和不同長短半軸比值的半橢球形蝕孔應力應變分佈的影響，探討搭接件疲勞裂紋的可能擴展方向，討論局部孔蝕對搭接件結構完整性的影響。
  17. It is shown that the first resonant frequency and the first anti - resonant frequency decrease synchronously due to the propagation of crack

    從該曲線可以發現，梁的第一階諧振頻率和反諧振頻率都隨裂紋的出現而減小，並且頻率減少量隨裂紋尺寸的增大而增加。
  18. According to the cyclic reverse loading test of two brick masonry walls without reinforement and four pieces of brick masonry walls reinforced with afrp, the cracking load, the ultimate load, the ductility factor and the rate of crack propagation were compared each other

    本文共進行了六片磚砌體的抗震性能試驗研究，對比了無筋磚砌體和芳綸纖維加固后磚砌體的開裂荷載、極限荷載、延性以及裂縫開展情況的異同。
  19. Two different reinforcing methodologies are applied : modification of the overlay characteristics by adding chopped glass fibers to the hot mixture asphalt ( hma ) and reinforcing asphalt overlay with glass grids. theory of fracture mechanics ( fm ) is employed to determine crack growth rates for the suggested anti - cracking overlay systems. asphalt mixture designing tests, three point bending tests and fatigue crack propagation tests were carried out. the critical stress intensity factors kic are determined for plain and reinforced asphalt concrete. depending on the fatigue crack propagation, the crack growth rate is determined for each type of anti - cracking system and the cracking process is also analyzed. one of the significant points in this study is the attempt to give better understanding of the crack propagation for multilayer asphaltic overlay or what are suggested herein to be called composite structure anti - cracking overlay system. the results indicate that the reinforcing materials improve anti - cracking characteristics of the asphalt concrete. composite structure anti - cracking overlay gives a good solution for the reflective cracking phenomenon over old cracked pavements

    利用2種不同的方法加筋瀝青罩面:在瀝青混合料中加入短切玻璃纖維改善瀝青混凝土的特性，採用玻璃格珊加筋瀝青混凝土.應用斷裂力學方法分析瀝青路面裂縫擴展機理.採用瀝青混合料設計試驗、三點彎曲試驗和疲勞裂縫擴展試驗，確定加筋瀝青混凝土的臨界應力強度因子kic ，測量每一種瀝青罩面抗裂系統的裂縫擴展速率.本研究的主要特點是提出復合型抗裂罩面系統，分析了多層加筋瀝青罩面裂縫擴展過程，推薦了若干瀝青路面抗裂系統.結果證明，加筋材料可以提高瀝青罩面的抗裂特性，復合型抗裂罩面系統能夠有效地阻止反射裂縫的擴展
  20. ( 3 ) the methods of detecting sub - critical propagation of cracks in concrete dams are explored by use of grey system theory, motion stability theory and catastrophe theory, and three criteria for sub - critical crack propagation are given

    （ 3 ）採用灰色系統理論、運動穩定性理論和突變理論，研究了混凝土壩裂縫亞臨界擴展識別方法，給出了三個裂縫亞臨界擴展判據。
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