initiation of crack 中文意思是什麼

initiation of crack 解釋
裂化開始
  • initiation : n. 1. 開始，創始；起爆。2. 教導，指點，啟發。3. 正式加入；入會儀式，入黨儀式。
  • 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. In conclusion, the research of this thesis indicate that the behavior of crack with a arc - tip is the same as that of a spiculate crack, but its load of fracture initiation is higher than the latter

    總之，本文的研究結果表明，裂尖寬度為0 . 12mm的非尖銳裂紋的斷裂行為與尖銳裂紋基本相同，但起裂載荷較高。
  2. Increasingly widely use of nonlinear viscoelastic materials, use of materials under extreme conditions, along with frequent occurrence of delayed catastrophic accidents, all these make the study a pressing problem of initiation and crack growth of nonlinear viscoelastic fracture

    隨著非線性粘彈性材料的廣泛使用和材料在極端條件下的使用，在長期荷載作用下頻繁出現的延遲性的災難性的事故使得非線性粘彈性的裂紋起裂時間和裂紋擴展速度的研究成為亟待解決的問題。
  3. 3. studying on prediction methods of the initiation life of aero - gear using shakedown analysis methods in order to directly consider in a quantitative way the details of stress - inelastic strain responses, residual stress and residual strain computations, fatigue crack initiation life was evaluated in aero - gear by using th

    利用chaboche的材料模型，研究了航空齒輪韌性材料在彈、塑性安定下的輪齒接觸疲勞裂紋萌生準則，該研究結果與相關的齒輪實驗結果比較分析表明：塑性安定下的疲勞裂紋萌生預測方法預測航空齒輪的萌生壽命是較安全的。
  4. The measurement of crack initiation in three - point bending fatigue of 40cr steel

    鋼疲勞裂紋萌生壽命的測量
  5. Energy estimating approach of fatigue crack initiation life for welded steel structures is obtained by using molski - glinka energy density equation, introducing the worst - case fatigue notch factor, and considering the effects of residual stress on fatigue

    本文採用應力應變能密度的molski - glinka方程，建立了一種預測焊接鋼結構疲勞裂紋形成壽命的能量方法。該方法引入了極值疲勞切口系數，並考慮了焊接殘余應力對裂紋形成壽命的影響。
  6. For the nitrogen - implanted samples, the initiation of crack is greatly delayed, and crack spacing interval is small. the samples prepared by pecvd and piii technologies have been investigated using homemade gas permeation tester. the excellent barrier

    而注入件相對沉積件而言，由於沒有明顯的界面層，而表現為改性層裂紋間距小，但沒有完全開裂，具有優良的耐失效性能。
  7. Based on lots of experiments, by combining the progress in mesomechanics with fea computation and analysis, this thesis investigated many parameters " effect on crack with an arc - tip in plain mixed - mode fracture, and compared existing criteria for fracture initiation, fracture direction and fracture mode transition

    本文主要的工作是在試驗的基礎上，結合細觀斷裂力學當前的研究進展，通過有限元計算和模擬分析，研究了平面復合型斷裂中各種力學參量對圓弧尖端裂紋斷裂的影響，比較分析了現有的起裂判據、斷裂擴展方向的判定方法以及斷裂模式的轉換條件。
  8. The fatigue crack initiation life of x60 pipeline steel after pre - tension deformation

    60管線鋼疲勞裂紋形成壽命的影響
  9. Fracture mechanics toughness tests - method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials

    斷裂機械韌性試驗.金屬材料穩定裂紋延伸的抗斷裂曲線和初始值的測定方法
  10. Failure state random function method for digital simulation of turbine disc crack initiation and propagation

    渦輪盤裂紋萌生擴展數字模擬的故障狀態隨機函數法
  11. So it establishes the essential foundation for studying the crack ' s initiation life of powder metallurgy turbine disks with inclusions

    為深入研究含夾雜粉末冶金渦輪盤裂紋萌生壽命打下必要的基礎。
  12. Biaxial analysis was used to get the multiaxial information, and fatigue calculation of multiaxial crack initiation was conducted

    壽命預測採用多軸裂紋萌生疲勞分析，其中部件的多軸特性通過二軸分析獲得。
  13. According to the observed results near the fracture surfaces, the orientations of the fatigue crack initiation and propagation were investigated to study the mechanism of multiaxial fatigue crack propagation

    根據薄壁管拉扭復合載試件斷口附近表面觀測結果，統計其裂紋擴展的位向，研究多軸疲勞裂紋萌生及擴展機理。
  14. It is very important to study the correlation of cyclical strain on the side of hole with fatigue life cycle for understanding the material damage and micro - crack initiation, and for preventing macro - crack initiation and propagation

    研究孔邊循環應變與疲勞循環次數的相關性，對于研究材料損傷及微裂紋的產生，預防宏觀裂紋的產生及擴展具有十分重要的意義。
  15. Mechanical folding test was applied to analyze the crack behavior of dlc films. the results show that the crack appears due to the mechanical stress and the initiation and propagations of the cracks may be suppressed with higher rf power, bias voltage and gas pressure

    機械彎折試驗結果表明，沉積成膜過程中，應選擇較高的氣壓、基板負偏壓、射頻功率以及適量的n摻雜來制備抗往復彎折的、耐失效性能優越的膜層。
  16. Total life of pm superalloy turbine disks can be divided into three parts : the crack ( near the inclusion ) initiation life, the life from the initial crack expanding to the visible crack ( 0. 78mm ), and the life from the visible crack expanding to the critical crack

    提出了含夾雜粉末高溫合金渦輪盤壽命分三個階段的概念，即：夾雜附近初始裂紋的孕育階段、初始裂紋擴展到可見裂紋（ 0 . 78mm ）階段（裂紋擴展第一階段）以及從可見裂紋擴展到臨界裂紋階段（裂紋擴展第二階段） 。
  17. Powder metallurgy turbine disks are worldwide adopted in most advanced aeroengine nowadays. the research of engineering application of them is actively being carried out in our country, and the key problem urgently needed to solve is their low cycle fatigue life prediction. the low cycle fatigue failure of powder metallurgy turbine disks is mainly caused by inclusions, so it ' s important to study the effect of inclusion on the stress intensity factors ( sif ) initiation and development of crack in powder metallurgy turbine disks

    當前世界上大多數先進航空發動機均採用了粉末冶金渦輪盤，我國目前正在積極開展粉末冶金渦輪盤的工程應用研究，其低周疲勞壽命預測成了亟待解決的關鍵問題，夾雜物是引起其低周疲勞失效的主要原因，因此開展夾雜物對粉末冶金渦輪盤應力強度因子及裂紋萌生與擴展的影響具有重要意義。
  18. On crack initiation within large blocks of concrete and its drevention and control

    大體積砼裂縫產生的原因及防治
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