fatigue fracture mechanism 中文意思是什麼

fatigue fracture mechanism 解釋
疲勞斷裂機理
  • fatigue : n 1 疲乏，勞累；勞苦；累活。2 【機械工程】（金屬屢經打擊等后的）疲勞。3 【醫學】（組織、器官等對...
  • fracture : vt. ,vi. （使）破裂；（使）折斷；（使）斷裂。n. 1. 破裂，折斷，斷裂。2. 裂痕，裂縫，裂面。3. 【醫學】挫傷，骨折。4. 【礦物】斷口；【地質學；地理學】斷層。
  • mechanism : n 1 （機械）結構；機械裝置[作用]；（故事的）結構。2 【哲學】機械論 （opp vitalism）。 3 【文藝】...
  1. According to the dynamic evolvement rules of the stress, strain and fracture distribution or fatigue cracking mechanism, fatigue equation and axle load conversion of the steel bridge deck asphalt mixture surfacing are proposed

    依據鋼橋面瀝青混合料鋪裝體系復合結構的應力場、應變場和損傷場在疲勞過程中的動態演變規律以及疲勞裂縫的形成機理，推導出鋼橋面瀝青鋪裝層疲勞性能方程和車輛軸載換算公式。
  2. Fatigue - fracture mechanism of main bearing cage for aircraft engine

    航空發動機主軸軸承保持架疲勞斷裂機理
  3. Though ferro - electricity was recognized in the early 1920 ' s, people still do not clearly understand even its basic characteristics and microstructure because descriptions of the behavior of ferro - electric ceramics remain in their infancy. the mechanism of damage, fatigue, crack and fracture of ferro - electrics should be studied more concretely not only in theory but also in application

    人們雖然對鐵電現象很早就有了認識，但對其基本性能的認識還遠未完善，對材料的微結構、疲勞、損傷、斷裂、破壞失效的機理也不十分明了，迫切希望進行更深入、更全面的了解。
  4. The research of high performance pavement concrete ( hppc ) is done in two sides. one is mixture design, the other is pavement performance. the mixture design and design flowchart of hppc is given on the base of nc with the consideration of characteristic of both hppc and nc. the grow law, influencing factor and formation mechanism of hppc strength is analisised by perpendicular experiment. in the same, the fatigue equations are set up for hppc and hppc i on the base of fatigue experiment. the fatigue mechanism of hppc is analysised by damage mechanics and fracture mechanics. brittleness, frost resistance and abrasion resistance of hppc is researched with the camparition to nc i. at last, the economic analysis of hppc is done by two kinds of way

    結合高性能混凝土與普通路面混凝土的特點，提出了建立在普通路面混凝土基礎上的高性能路面混凝土配合比設計方法，給出了設計流程；通過正交試驗（強度試驗） ，分析了高性能路面混凝土的強度發展規律、影響因素與形成機理；同時，根據疲勞試驗結果採用雙參數weibull分佈模型分別建立了高性能路面混凝土和高性能路面混凝土（沒有摻加硅粉）疲勞方程，應用損傷力學和斷裂力學，分析了高性能路面混凝土的疲勞機理；並採用了對比分析方法，研究了高性能路面混凝土的脆性、抗凍性和耐磨性等。
  5. In this dissertation, the effect of texture, heat - treatment, and hydrogen on the lcf behavior of zircaloy - 4 and the cyclic deformation behavior for zircaloy - 4, n18 alloy and n36 alloy have been investigated systematically using fully - reversed tension - compression loading under strain control ( r = min / max = - 1 ), while the evolvement of the friction and back stresses versus the number of repeated working cycles and the plastic strain amplitude has been studied, and the thorough discussion combined with the analysis result of fatigue sub - structure, friction and back stresses, and fatigue fracture has been given to the mechanism underlying the lcf behavior of alloys

    本文採用對稱拉壓循環變形方法（ r _ = _ （ min ） _ （ max ） = - 1 ） ，系統研究了織構、熱處理狀態、氫對zr - 4合金低周疲勞性能的影響， zr - 4合金、 n18合金和n36合金的循環變形行為，並研究了摩擦應力、背應力隨循環周次、塑性應變幅的變化規律。結合疲勞亞結構和疲勞斷口的分析結果，深入探討了影響合金低周疲勞行為的作用機制。
  6. 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。
  7. It was demonstrated that the values of domain strain decreased while the rate in reduction of the domain strain lowered with larger n. combined the xrd with sem results, the non - fracture mechanism of the sample when pure electric fatigue was applied can be described as : at an earlier stage of electric fatigue, the high repeated incompatible strain led the major fracture mode for the fatigued sample to be of inter - granular. the ability of domain switching in a - - > c of the sample along with the direction of an applied electric field kept dropping, hence, reduced the domain strain

    結合xrd和sem觀測，提出了純電疲勞作用下試樣不會發生斷裂的機理：電疲勞初始階段，試樣中的非協調高應變導致沿晶微裂紋，隨著微裂紋的增加，使得試樣沿外電場方向發生a c疇的能力不斷降低，從而導致疇變應變減小，當應變減小到一定程度時，將不足以在試樣中引起新的微裂紋或使原有微裂紋繼續伸長。
  8. In this paper, a lot of macro and micro fracture sections under equal and variable amplitude loads are analyzed on 40cr high - strength bolts by use of scan - electronic microscope. its fatigue mechanism is known fundamentally

    本文以螺栓球節點網架中最常用的40cr高強螺栓為研究對象，藉助掃描電子顯微鏡等先進儀器對40個常幅及變幅疲勞試件斷口進行了宏觀及微觀形貌分析，基本摸清了其疲勞破壞的機理。
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