裂紋長度 的英文怎麼說

中文拼音 [lièwénzhǎngdù]
裂紋長度 英文
crack length
  • 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
  • 長 : 長Ⅰ形容詞1 （年紀較大） older; elder; senior 2 （排行最大） eldest; oldest Ⅱ名詞（領導人） chief;...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 長度 : length; longitude; size; extent; footage
  1. The cracking with these two types of underfill might become unstable and lead to catastrophic failure at the end. the critical length was about 12m for the assembly with no - flow underfill and 20m for the package with capillary - flow underfill at 20 ?

    模擬表明，山固化溫度冷卻到室溫時，所研究的倒裝焊封裝在填充不流動膠時晶元斷裂臨界裂紋長度為12pm ，而填充傳統底充膠時為20hm 。
  2. A reliability experiment of thermal aging was carried out for the two types of joints, scanning electron microscopy, energy dispersive x - ray spectrometer and micro x - ray diffractomer were adopted to investigate the interfacial evolution behavior of joints, and kinetics model of imc formation was established. the results show that imc growth follows the parabolic law as a function of aging time at certain aging temperature, imc growth is more sensitive to the aging temperature than the aging time, the activation energy of cu - al imc growth is 97. 1kj / mol and the major forming cu - al imc are cual2 and cu9al4, the activation energy of au - al imc growth is 40. 1kj / mol and the main au - al imc are au4al and au5al2, with au2al and aual at the interfacial periphery of joints, the rate of cu - al imc growth is about 1000 times slower than that of au - al imc, and kirkendall voids and cracks are easily appeared during thermal aging in gold ball bonds while voids and cracks are absent in copper ball bonds even after aging at 200 for 2900 hours and 250 for 169 hours

    研究結果表明:金屬間化合物厚度與老化時間的關系符合拋物線法則，金屬間化合物的生長對老化溫度比老化時間更加敏感; cu - al金屬間化合物生長的激活能為97 . 1kj / mol ，老化后金屬間化合物呈層狀分佈，主要相為cual2和cu9al4 ; au - al金屬間化合物生長的激活能為40 . 1kj / mol ，主要相為au4al和au5al2 ，同時在界面周邊區域生成了au2al和aual ;老化過程中cu - al金屬間化合物生長速率比au - al金屬間化合物生長速率小103數量級;金絲球鍵合點200老化96小時出現了明顯的kirkendall空洞和裂紋，但銅絲球鍵合點200老化2900小時和250老化169小時都沒有形成空洞和裂紋。
  3. 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。
  4. The main purpose of this paper is to study crack growth rate of a class of nonlinear viscoelastic materials under the condition of constant load and small - strain. in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program, facilities involved in the nonlinear viscoelastic crack tests are relatively few, the test process is relatively simple and the data obtained from the experiments are credible. on this basic, the calculation of j integral of nonlinear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonlinear viscoelasticity are derived

    具體成果包括： 1 、證實了雙懸臂梁試件用於非線性粘彈性裂紋擴展實驗研究的優點：雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長，在計算j積分時，計算方法簡單； 2 、得到了改性聚丙烯材料用於非線性粘彈性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸；採用不斷改善夾具的方法使得加載穩定； 3 、經過連續四個多月的時間得到了一組有用的實驗數據； 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。
  5. Finally, an energy approach is combined with the fem in the simulation of the crack propagation along the fiber / matrix interface in a pull out process. the simulated results are in nice conformity with experimental results. the second part of the research deals with the characterization of the failure process in the fragmentation tests, which is one of the most frequently used test methods in studying thermal mechanical properties of fiber / matrix interfaces

    在這一部分工作的最後，採用能量法與有限元法結合起來，模擬纖維抽拔試驗中裂紋的擴展:針對以往研究工作中的不足之處，在模擬中使用能量釋放率，在表徵界面破壞時，所使用的應力強度因子考慮了纖維和基體兩種材料的不同屬性，並考慮裂紋尖端的單元奇異性，來研究裂紋長度和溫度對裂紋擴展的影響。
  6. That is, the load is dropped off in the proportion to the crack length.

    這就是說，載荷隨裂紋長度的增加而按比例地下降。
  7. According to the characters of shimadzu electro hydraulic servo controlled fatigue testing machine and ct specimen, put forward a method based on compliance of stroke displacement which reflects the displacement of loading point at first time

    本項研究根據島津液壓伺服材料試驗機和ct試樣的特點，首次提出了基於通過測量反映加載點位移的試驗機活塞位移的卸載柔度法來測量裂紋長度。
  8. In international, electric potential is used widely. it is expensive to experiment with the method

    高溫環境下疲勞裂紋長度的測量一直是個難題，國際上常用的測量方法是試驗成本較高和電位法。
  9. The smaller the curvature and the larger the crack length the smaller will be the fracture stress.

    曲線半徑越小，裂紋長度越大，斷裂應力也就越低。
  10. 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。
  11. A static and a transient analysis of an embedded crack in a long elastic strip are carried out. the results are approximate to the ones that existed. and the effects of the factors including the crack configuration, the crack depth, the strip length and the strip thickness on the transient response are discussed

    對含內埋橢圓裂紋的板條進行了靜態和瞬態分析，得到的結果與已有的解吻合良好，對影響瞬態響應的因素如裂紋形狀、裂紋深度、板條長度、板條厚度做了分析比較。
  12. A special testing fixture and the crack length measurment method for crack fracture and propagation in mixed mode

    復合型裂紋斷裂和擴展速率試驗夾具及裂紋長度測量方法
  13. Through studying the relation between crack lengths and loading point compliance, we get the quantificational formula

    通過探索加載點位移曲線得到柔度與試樣裂紋長度的關系，建立定量計算式。
  14. The second chapter analysis the way how to decide the length of the limiting flaw. according to the theory of fracture mechnics and damnification mechnics, and the author lakes two way for calculating the length of the limited flaw, in finally, two calculation result is identical, so we can draw a conclusion that the method that we used in the past is in consistent with reality

    本文第二章分析了如何應用斷裂力學和損傷力學知識，用兩種不同的求解方法來確定臨界裂紋的長度，計算分析發現兩者結果一致，這說明我們所使用的確定臨界裂紋長度的方法和實際情況是一致的。
  15. According to the relationship between material fatigue performance curve and concerned parameters in fracture mechanics, the relationship between fatigue life and crack half length is obtained, that is equivalent crack length of fatigue life. the function relationships between these two aspects are constructed. the experiment data show that this method can express the same character of fatigue life of all kinds of materials and experiment data acquired from different materials can be used each other

    通過材料力學疲勞性能曲線和斷裂力學之間有關參量間的演變關系，得到了疲勞壽命與裂紋半長的關系，即疲勞壽命的折算裂紋長度，建立了兩者之間的函數關系並利用這個函數關系說明了疲勞壽命的切線模量因子法，能反映各種材料疲勞壽命的共同變化規律，試驗數據可在不同材料之間互相參考使用，具有重大意義。
  16. To generalize the eccentricity ratio effect on ultimate tensile strength of ductile plates, the elesto - plastic finite element method is undertaken and a mathematical transition expression of normalized ultimate tensile strength of center - cracked, eccentrically cracked, edge - cracked plates is accordingly deduced

    對于偏心裂紋延性板，採用彈塑性有限元進行了大量的組合計算，分析了相對裂紋長度、材料屈強比和裂紋偏心度對板的拉伸極限強度的影響，並給出了方便計算的回歸公式。
  17. The repair effect is compared with various type of repair and effect of residual thermal stress patch width thickness and thickness of adhesive layer

    在修補前與修補后，裂紋板的j積分值與裂紋長度的關系發生明顯的變化。
  18. The effect of these nonlinearities can be avoided by determining compliance at the same maximum load for all crack lengths investigated.

    這些非線性效應，可在測定所有裂紋長度的柔度方法時，採用最大載荷不變的方法予以消除。
  19. 5. 4 or hole length, crackle of edge, quite on 80 mm, hole and hole allow to feed through the crackle in the excellent hole

    5 . 4棒孔內或孔邊緣裂紋長度不大於80mm ，孔與孔之間不允許有連通裂紋。
  20. The reliability ' s construe result for the magnitude of stress, and the flaw length and the life of flaw extend will be helpful to the modernization administration for the portal crane

    對應力幅、臨界裂紋長度及裂紋擴展壽命的可靠性分析所得出的結論對以後的港口機械的現代化管理有一定的理論和實踐指導意義。
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