拉裂裂紋 的英文怎麼說

中文拼音 [lālièlièwén]
拉裂裂紋 英文
pull crack
  • 拉 : 拉構詞成分。
  • 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
  1. Microcracks and stresses will appear if the dropping speed, aluminum content and dropping cycles are too high. high temperature heat - treatment can eliminate and help to obtain compact thick film

    當提拉速度、溶膠濃度和鍍膜次數較大時膜內易出現微裂紋和脫落等缺陷， 550熱處理5h可以消除缺陷，獲得緻密厚膜。
  2. The main results and academic contributions of the dissertation can be summarized as following : 1 ) for the difficulty to obtain the accurate analytical solution of the stress constraints around 3d cracks, detailed 3d fe analyses have been conducted to study the out - of - plane constraint factor tz around a straight through - thickness crack, a quarter - elliptical corner crack and a semi - elliptical crack embedded in an isotropic elastic plate subjected to uniform remote tension loading. the distributions of tz are minutely studied in the forward section of the cracks. strong 3d zones ( tz > 0 ) along the crack front were investigated despite the far field stress - free boundary conditions

    全文主要研究內容和學術貢獻如下: 1 .針對一般三維裂紋端部場應力約束準確解析的困難，對均勻拉伸載荷作用下各向同性彈性板中穿透厚度中心直裂紋、半橢圓表面裂紋和1 / 4橢圓角裂紋進行了大量詳細的全場應力三維有限元分析，首次全面分析了非穿透裂紋端部場三維影響區范圍，給出了不同形狀三維裂紋前沿離面應力約束因子tz的數值解，並結合k場平面解給出了非穿透裂紋端部應力場k - tz雙參數描述。
  3. Testing results are analyzed, then the boundary condition ( the heat transfer coefficient of and the water density ) for computer simulation is acquired. through simulation in computer using the all - purpose computer simulation software secondary cooling in slab continuous casting and test results, the influence of the factor such as casting speed, casting temperature, shell thickness and secondary cooling system are analyzed. the secondary cooling system is evaluated, the reasons of crack are analyzed

    應用模擬軟體和實驗數據對寶鋼1930鑄機進行了模擬計算，分析了拉速、配水制度、過熱度對鑄坯溫度場和坯殼厚度的影響；對寶鋼1930鑄機的二冷制度進行了評估，分析了產生裂紋的原因；並對二冷制度進行優化，提出了改進建議。
  4. Cracked and repaired specimens were tested under static load. in the last chapter, some ideas for aviation maintenance are proposed by using the theoretical calculation combining with the test results

    強度測試結果表明，含裂紋鋁板修補后的拉伸載荷比修補前有明顯提高，復合材料膠接修補金屬板后的靜強度可以增大。
  5. Therefore one of efficiency means to solve cracking problem of runners is to change distribution of welding residual stress of blades, to decrease welding residual tensile stress in the dangerous area of blades or even turn to compressive stress

    因此，改變葉片焊接殘余應力的分佈狀態，降低葉片危險區域的焊接殘余拉應力峰值，甚至將危險區域的拉應力轉變為壓應力，是解決轉輪裂紋問題的有效途徑之一。
  6. The results of quantitative analysis showed that the pre - tension deformation reduced the fatigue crack propagation threshold and increased the crack propagation coefficient, and consequently decreased the fatigue resistance of the part with mechanical damage

    定量分析表明：預拉伸變形降低了疲勞裂紋擴展門檻值，提高了裂紋擴展系數，從而使管線在機械損傷的部位疲勞抗力降低。
  7. The studies expressed that the tensile - strength declined with the growth of dose rate after the radiation treatment, and at the same time, the gel content had extreme value with the change of the dose rate. the surface of uhmwpe fibers showed some irregular micro - pits and dents after radiation treatment, narnely rough degree increasing. their number and deepness increased with increase of dose. and this phenomenon is the most obvious when the dose rate was 8. 5kgy / s and the dose was 400kgy. at the same time some containing oxygen groups, including hydroxyl group, carbonyl group and carboxyl group, were introduced into the fiber surface which was exposed to the air

    研究表明， uhmwpe纖維經電子束輻照處理后，纖維的拉伸斷裂強度隨劑量率的增加呈下降趨勢，凝膠含量隨著劑量率的變化存在極值。纖維表面出現了不規則的微裂紋和凹痕，隨著劑量的增大，電子束對纖維表面的刻蝕程度增加，在本研究中以劑量為400kgy劑量率為8 . 5kgy s時刻蝕效應最為明顯。同時，在空氣中進行輻照時，纖維表面被引入了一些含氧基團，包括羥基、羰基和羧基。
  8. Pent notch tensile test to measure the resistance to slow crack growth of polyethylene materials for pipe and fitting products

    管和管件用聚乙烯材料耐慢速裂紋伸展的測定的缺口拉伸試驗
  9. It has been found that the depth of crack and fracture toughness of material can be expressed by weibull distribution, ratio of depth to length of crack and strength of material can be expressed by logarithmic normal distribution and normal distribution respectively

    對該管道主要隨機變量的統計分析表明，裂紋深度和材料的斷裂韌性表現為威布爾分佈，裂紋深長比表現為對數正態分佈，材料的屈服強度和拉伸強度表現為正態分佈。
  10. The cracks extend along the matrix / strengthening - phases interfaces and form the cleavage steps and tear ridges. there appear some very small dimples on the fracture surfaces of the directionally solidified samples, which come from the nb - based solid solution particles in the big plates of the strengthening phases, but no dimples on the fracture surfaces of the as - cast sample. it can be concluded from above results that niobium - niobium silicide based in - situ composites ( rmics ) with a uniformly orientated microstructure can be produced by the ebfzm with high temperature gradient, and their mechanical properties can be increased

    隨著抽拉速率的提高和硅化鈮強化相間距與尺度的減小，材料的室溫拉伸強度和斷裂韌性均有提高， _ b最高可達778 . 4mpa ， k _ （ ic ）達到了46 . 3mpa ? m ~ （ 1 / 2 ） ；試樣的拉伸斷口基本表現為脆性解理斷裂的花樣，裂紋沿基體強化相界面繞過強化相進行擴展，在裂紋擴展方向存在解理臺階，並形成撕裂棱。
  11. Nanocrack might nucleate at a crack tip or in the dfz. in the thicker area, a ribbon thin area or a zigzag thin area might be formed by slip

    金屬薄膜拉伸過程中，微裂紋可以在主裂紋頂端連續形核擴展，也可以在無位錯區中不連續形核擴展。
  12. Fatigue experiments were performed to obtain the fatigue lifetime under the different loading. the parameters for law of the fatigue crack growth were obtained by crack growth experiments. in order to study the fatigue characteristics at high temperature, creep tests were also done

    本文對多種典型焊接試件開展了諸多的試驗研究工作：進行單軸靜載拉伸試驗以確定構件的強度；進行疲勞壽命試驗以測得疲勞壽命曲線；進行疲勞裂紋擴展試驗以獲得試件的疲勞裂紋擴展規律paris公式；進行蠕變試驗以考察焊接試件疲勞持久特性；進行剩餘壽命試驗以獲得試件的剩餘壽命。
  13. The axial - symmetric ring - shaped interface crack problems are discussed under tension loading

    摘要討論受拉伸載荷作用的軸對稱環形片狀界面裂紋問題。
  14. The proposed model - beam - particle model is validated to simulate some routine tests of concrete which including uniaxial compressive test and uniaxial tensile test to prove that the numerical model can effectively to describe the complete failure process caused by the initiation, propagation and coalescence of cracks. the influence of the meso - mechanical properties to the macroscopic failure behavior is discussed in this paper. the proposed model is employed to simulate the dynamic failure process of concrete under impact loading, and analyse the failure behavior of concrete with different impacting velocity

    本文建立了混凝土的梁-顆粒數值模型，並利用該模型進行了混凝土在單軸壓縮和拉伸載荷作用下，混凝土從微裂紋的萌生、擴展、貫通直到宏觀裂紋產生導致破壞的全過程的數值模擬，探討了混凝土材料細觀結構對其宏觀力學行為的影響；利用該數值模型，模擬了鋼彈以一定的初始速率垂直侵徹混凝土圓板的動態過程，對計算結果進行了動畫顯示，並分析了不同鋼彈初始速率對混凝土圓板破壞形式的影響。
  15. 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。
  16. Disc specimens have great application in testing the mechanic properties of rock, such as the cracked chevron notched brazilian disk ( ccnbd ) and the cracked straight - through brazilian disc ( cstbd ) used in testing rock fracture toughness, the brazilian disc and the flatted brazilian disc ( fbd ) used in testing rock tensile strength

    圓盤類試樣在巖石的力學性質測試中有著廣泛的應用。如應用於巖石斷裂韌度測試的人字型切槽巴西圓盤（ ccnbd ） ，中心穿透直裂紋巴西圓盤（ cstbd ） ，應用於巖石抗拉強度測試中的巴西圓盤試樣和平臺巴西圓盤（ fbd ）等試樣。
  17. Test results showed that the fatigue crack propagation rare increased with increasing the pre - tension deformation degree, especially at the near threshold section

    結果表明：隨著預拉伸變形量的增加，疲勞裂紋擴展速率提高，尤其是在裂紋擴展的近門檻區。
  18. In the present study, experimental investigations were carried out on the fatigue crack propagation characteristics of x60 pipeline steel after different degrees of pre - tension deformation ( 5 %, 10 %, 15 % )

    摘要用單邊裂紋試樣，研究了x60管線鋼經預拉伸變形量為5 % 、 10 %和15 %后的疲勞裂紋擴展特性。
  19. Base on failure analysis and stress distribution analysis of the stuffing box using the lame formula and software ansys in predigested model, it is found that the composition of the material accorded with the requirement for stuffing box, and the microstructure with few impurity was qualified

    摘要對產生裂紋的填料盤進行了失效分析，通過拉梅公式和有限元分析軟體對填料盤簡化模型進行了受力分析。
  20. Test method for notch tensile test to measure the resistance to slow crack growth polyethylene pipes and resins

    測量聚乙烯管和樹脂抗裂紋緩慢增長的切口拉伸試驗方法
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