疲勞斷口 的英文怎麼說

中文拼音 [píláoduànkǒu]
疲勞斷口 英文
fatigue fracture
  • 疲 : 形容詞（疲乏; 勞累） tired; weary; exhausted
  • 勞 : Ⅰ動詞1 （勞動） work; labour 2 （煩勞） put sb to the trouble of; trouble sb with sth : 勞您費心...
  • 斷 : Ⅰ動詞1 （分成段） break; snap 2 （斷絕;隔斷） break off; cut off; stop 3 （戒除） give up; abstai...
  • 口 : Ⅰ名詞1 （人或動物進飲食的器官; 嘴） mouth 2 （容器通外面的地方） mouth; rim 3 （出入通過的地方） ...
  • 疲勞 : 1. （疲乏勞累） tired; fatigued; weary; become fagged 2. （機能或反應能力減弱） fatigue; strain 3. [物理學] fatigue
  1. The selections of electron microscope magnifying multiple and measuring size in fatigue fracture fractal measure are studied in this paper, and the improved treatment of secondary electron lines scanning fractal dimension, is applied successfully to the measuring of ti alloy welded joint fracture fractal dimension and the valuable selective range of fractal dimension measuring parameter is got, which is very important to further research

    本文應用數據處理技術研究了疲勞斷口分維數測量中電鏡放大倍數及測量碼尺的選擇問題，改進了二次電子線掃描分維數處理方法，並成功地應用於鈦合金焊接接頭斷口分維數的測量，得到了有價值的分維數測量參數的選擇范圍，對進一步的研究具有重要意義。
  2. Analysis results of histogram statistics and section electron microscopic scan technique, are that fracture feature of the cracks of the hbbb is similar and the crack is multi - source strain fatigue one. internal defects of the cast, such as impurities, gas holes, etc, are the main causes for early cracks. the contrast analysis of static strength, model and transient respond on three structures with fem proves that geometrical stress concentration in partial area has influence on early crack, also

    利用直方圖等統計方法和電鏡掃描技術對該抱軸箱體裂紋分析的結果是：抱軸箱體的裂紋斷口特徵相近，裂紋性質屬于多源性低周疲勞裂紋，鑄件中的夾雜、氣孔等內部缺陷是導致過早裂損的主要原因；利用有限元法對該抱軸箱體三種結構的靜強度、模態和動態響應對比分析，證實了局部幾何性應力集中對過早裂損也有一定影響。
  3. 4. the research of metal fatigue fractal dimension measuring is in the study of material characteristic analyzing

    金屬疲勞斷口分維數測量方法的研究是目前材料性能分析研究中的前沿課題。
  4. Using fractal dimension defining damage variable and building macro and micro - fatigue damage evolution model of structure are suggested in this paper. the variety of damage which is not easy macro - measured to ti alloy tc11 whose material structure is high intensity can reflect fatigue damage process effectively by studying the relation between fracture and structure life

    本文研究表明：採用分維數定義損傷變量，建立結構的宏細觀疲勞損傷演化模型，尤其是對于tc11鈦合金這樣的高強度材料結構，損傷量變化不易宏觀測量，可以通過斷口分維數與結構壽命關系的研究，有效地反映疲勞損傷過程。
  5. According to the model of structure fatigue damage fractal evolution, the relation between macro - damage variable, fractal damage variable and fatigue life can be found, and the fatigue damage evolution equation of ti alloy tc11 welded joint can be built, and the method of more forecast fatigue damage is given

    根據結構疲勞損傷分形演化模型，通過對tc11鈦合金焊接試件的疲勞試驗和疲勞斷口分維數測量，得到了宏觀損傷變量和分形損傷變量與疲勞壽命的關系，建立了tc11鈦合金焊接接頭的疲勞損傷演化方程。給出了進一步疲勞損傷量預測的方法。
  6. There exists pronounced difference in the fatigue fracture at room temperature and 400

    常溫疲勞斷口和高溫疲勞斷口有著較大差別。
  7. Fatigue experiment of the full - scaleequalizing bar of bulldozer andanalysis of the fatigue fracture

    推土機平衡梁全尺寸疲勞試驗及疲勞斷口分析
  8. Sem investigation shows that all the crack initiations can be traced back to the lateral sides of the sample, and the crack propagates along the direction normal to the loading axis

    Zr一4合金的低周疲勞斷口上，所有裂紋都起源於試樣最窄處的側表面，並逐漸向內部擴展。
  9. Then uses the methods such as robert, sobel to detect the edge. finally, uses the method of fourier to extract the vein feature of the shell pattern so as to make computer identify the fatigue fracture

    然後採用robert 、 sobel等演算法進行邊緣檢測，最後採用fourier變換來提取貝殼紋花樣的紋理特徵值，實現計算機對疲勞斷口的識別。
  10. This article introduces gray image processing technology. firstly, in order to eliminate noise, optimize image and get precise edge feature, a series of preparations can be done to fracture image such as histogram equalization, binarization, edge enhancement, and so on

    本文採用灰度圖像處理技術，首先對疲勞斷口圖像進行直方圖均衡化、二值化、邊緣增強等預處理來消除噪聲，優化圖像，以得到精確的邊緣特徵。
  11. According to the measuring result of fatigue fracture fractal dimension, it gets the relationship curve of ti alloy tc11 welded joint fracture fractal dimension with loading strain range, and the method of fatigue life forecasting fatherly. 3

    根據疲勞斷口分維數的測量結果，獲得了tc11鈦合金焊接接頭斷口分維數與其疲勞壽命的關系曲線，以及斷口分維數與最大加載應變之間的關系曲線，給出了進一步疲勞壽命預測的方法。
  12. The formation of 3. 5 % nacl solution is almost similar to that of 3. 5 % nacl thin electrolyte layer, just the mass transfer rate of the oxygen in the layer is more quicker than in the solution ? the test shows that the crack growth rate of wet - corrosion fatigue of lc4cs aluminum alloy in the layer is quicker than in the solution, and also shows that morphology of fatigue fracture in the layer is evidently distinguished from in the solution

    3 . 5 nacl溶液和3 . 5 nacl薄液層的化學組成幾乎完全相同，只是薄液層中氧的傳質速率較快。實驗結果顯示了在薄液層中， lc4cs鋁合金的濕腐蝕疲勞裂紋擴展速率，大於在3 . 5 nacl溶液中的速率。實驗還發現其疲勞斷口的形貌，也與3 . 5 nacl溶液中的有明顯區別。
  13. And the finite element method ( fem ) was used to simulate the stress and deformation of the outer casing and the bearing chock. on the basis of the experiments and fem analysis, the strength and fatigue lifetime, the interaction of creep and fatigue lifetime, the creep lifetime of outer casing and bearing chock have been analyzed, at the end of trail, sem analyses of failure section has been conducted

    同時對航空發動機燃氣渦輪外機匣和軸承座進行了有限元模擬計算，得到外機匣和軸承座的焊接處的強度和變形情況的模擬結果。根據試驗數據和有限元的計算結果，對發動機燃燒室外機匣和軸承座兩種結構（包含焊縫）進行靜強度分析、疲勞壽命分析、蠕變壽命分析、蠕變疲勞交互作用壽命分析以及斷口的金相分析。
  14. There is a slight drop of the fcpr when the specimen s thickness increases. however, the thickness of the specimen exerts a great influence on kth and fatigue life ( n ) : the thicker specimen is, the higher fatigue life ( n ) becomes, and the greater kth shows. under control of the same conditions, the fcpr of am50 is not so high as that of az91. there are some correlations between load ratio ( r ) and the fatigue surface : when load ratio becomes great, small flat surfaces increase while dimples decrease

    試樣厚度增大，穩態裂紋擴展速率略有減小。但是，試樣厚度影響試樣的疲勞壽命和門檻值：試樣越厚，疲勞壽命越長，門檻值越大；在試樣尺寸和加載條件相同的情況下， am50的疲勞裂紋擴展速率較az91小，疲勞壽命則比az91長。載荷比r影響試樣的斷口形貌：載荷比r越大，對應相同k值出的斷口小平面越多，韌窩越少。
  15. 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。
  16. At room temperature, the fracture for r specimen is the characteristic of fatigue stripe, while tire - like pattern appears on the fracture of the t specimen, and the hydrided sample is characterized by skeleton - like pattern and quasi - cleavage fracture at room temperature. however, the fracture characterized by second - crack at 400

    常溫下， r向試樣的低應變幅疲勞斷口上較為明顯的特徵是疲勞條紋的存在; t向試樣的疲勞裂紋擴展區斷口上則為輪胎痕花樣;滲氫態試樣室溫下疲勞斷口的主要特徵為脊骨狀花樣和準解理斷裂特徵。
  17. The fracture surfaces of multiaxial fatigue specimens under proportional and non - proportional multiaxial loadings were observed and analyzed by using a scan electron microscope

    摘要利用掃描電鏡對多軸比例和非比例載下的疲勞試樣的斷口面和外表面進行掃描觀測分析。
  18. 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。
  19. Wavelet decomposition : db4 wavelet decomposition and energy norm l1 was employed to extract feature of zr - 4 alloy images. with the selected wavelet db4, features at different frequency channels of life span were gotten. then an energy change at the direction of fracture extension was studied to find the relationship between the feature and life - span. fractal algorithm : feature of image at different channel was extract after wavelet transform

    基於小波分解的斷口圖像的分析，首先提取鋯- 4合金低周疲勞斷口紋理圖像的特徵，實驗確定了db4小波分解和l1能量的計算方法，求得不同壽命的斷口圖像在各個頻率通道的特徵值，斷口圖像的變化反映在特徵值的變化，這為圖像的壽命分析提供了一種有效的手段。
  20. Taking ti alloy tc11 electron beam welded work - piece as research object, which is the conventional material of aero engine compressor blisc, the fatigue damage evolution law of fatigue damage action in the area of welded joint based on damage mechanics theory is analysed, and fatigue damage model, which macro - parameter and micro - damage characteristics are related, with fractal geometry - a new conception of modern mathematics is set up in this paper. it tries to research the measuring method of fatigue fracture fractal dimension and the relationship of fractal damage variable with fatigue life. it also sets up the welded joint fatigue damage fractal evolution equation

    本課題以航空發動機壓氣機葉盤常用材料鈦合金（ tc11 ）電子束焊構件為研究對象，對焊接接頭的疲勞破壞行為，基於損傷力學理論分析其疲勞損傷演化規律，應用現代數學的新概念? ?分形幾何學理論，建立宏觀參量與細觀損傷特徵相聯系的疲勞損傷模型，研究疲勞斷口分維數測量方法以及分形損傷變量與疲勞壽命之間的關系，建立焊接接頭疲勞損傷分形演化方程。
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