裂紋高溫擴展 的英文怎麼說

中文拼音 [lièwéngāowēnkuòzhǎn]
裂紋高溫擴展 英文
high-temperature crack growth
  • 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
  • 高 : Ⅰ形容詞1 （從下向上距離大; 離地面遠） tall; high 2 （在一般標準或平均程度之上; 等級在上的） above...
  • 溫 : Ⅰ形容詞（不冷不熱） warm; lukewarm; hot; gentle; mild Ⅱ名詞1 （溫度） temperature 2 （瘟） acute ...
  • 擴 : 動詞（擴大） expand; enlarge; extend
  • 高溫 : high temperature; elevated temperature; hyperthermia; megatemperature; inferno
  1. : 36 < kth < 37 mpa / m3 / 2, 42 < kih < 44mpa / m3 / 2, 51 < kc < 52 mpa / m3 / 2 through the sem fractography, it is know that the susceptibility to brittle failure at room temperature is more than below 100 ?. and the susceptibility to brittle failure increase with hydrogen increasing, under the sustained loading, ductile cracking appears. the quantity of brittle cracking is more with crack growth

    T44mpa m 『 q ， sl lt52mpa in 』 」斷口分析表明，該合金充氫后其室溫時的氫脆敏感性大於100oc時的氫脆敏感性；且隨氫含量升高，氫脆敏感性增加：在恆載荷的作用下，該合金裂二紋開始擴展時顯示的是韌性起裂；隨裂紋增長，試樣脆性斷裂的比例增大。
  2. This paper aims at the characteristics of thermal response of lpg vesse1 under high temperatue, conjoining the project of " study on transportation safety early - wdring system of lpg dangerous goods " supported by transportation departinen of china and the project of " mechanism study and numerical simulation of the explosion of lpg vessel " supported by science foundation of hubei province. the interdisciplinary research has been done among temperature field distribution of lpg vessel under flame surroundings, intensity calculation, crack propagation predication and mechanism of explosive accident, etc. three parts are analyzed and discussed

    本文針對高溫環境下液化氣壓力容器的熱響應特性問題，結合交通部重點科技項目「液化氣體類危險品運輸安全預警系統的研究」和湖北省自然科學基金項目「液化氣容器爆炸機理研究及數值模擬」 ，對在火焰包圍下的液化氣壓力容器的溫度場分佈、強度計算、裂紋擴展預測以及爆炸事故機理等方面開展了多學科的交叉研究。
  3. But when heavyly loaded, the former is far better than the latter. the wear resistance of za27 alloyed with mn is no obviously better than that of common za27 alloy. under the sliding friction conditions, the wear resistance at high temperature of za27 is improved by alloyed si and reaches the highest level when the content of si is 1 - 3wt. %

    裂紋主要始於脆性相si相和mn相，裂紋沿晶界擴展；在滑動摩擦條件下（常溫） ，含si的za27合金在載重較小時，耐磨性與普通za合金相比沒有明顯提高，但在載荷較大的情況下，其耐磨性遠高於普通za27合金材料；加mn的za27合金與常規za27合金相比，耐磨性沒有明顯提高；在滑動摩擦條件下， si的加入提高了za27合金的高溫摩擦性能。
  4. In this paper, the high - temperature low - cycle fatigue life and fatigue crack propagation life tests are carried on the cylindrical axial symmetry specimens having precrack or non - precrack with different types of notches of 16mnr steel in common use in the petrochemical industry contacting coke drum equipment, the stress / strain and the range of stress / strain of dangerous points are received through stress analysis of the specimens using finite element program under multi - axial stress state. at last, the equations of evaluating the high - temperature low - cycle fatigue life and the fatigue crack propagation life are found through using the least - square regression method

    本文採用無預裂紋和帶預裂紋環狀缺口圓柱形試樣，進行了石化焦炭塔設備常用材料16mnr多維應力狀態下不同缺口形式的高溫低周疲勞總壽命試驗及裂紋擴展壽命試驗，並利用有限元程序對試樣缺口周圍及裂紋尖端附近進行了軸對稱多維應力狀態下的應力、應變場分析，來評價材料不同條件下的高溫低周疲勞總壽命和裂紋擴展壽命，最後利用最小二乘回歸方法，得到了該材料高溫低周疲勞總壽命和裂紋擴展壽命評價方程。
  5. It has been pointed out that for the application of cryogenic nitrogen gas jet in high speed milling of titanium alloy, unless the chipping and fracture caused by thermal cracks take place, the reduced temperature of cryogenic nitrogen gas will prolong the tool life

    指出在低溫氮氣射流條件下高速銑削鈦合金時，只要熱裂紋的形成與擴展未引起刀具的崩刃及刀面的剝落，進一步降低低溫氮氣的溫度將提高刀具的使用壽命。
  6. ( 4 ) the fatigue cracks propagate mainly transgranularly at room temperature, while those propagate mainly intergranularly at high temperature

    隨著溫度的升高，疲勞裂紋擴展方式由穿晶型為主向沿晶型為主轉變。
  7. Testing method for crack initiation and propagation rate in steam turbine metals at elevates temperature

    汽輪機.金屬高溫裂紋開裂和擴展速率試驗方法
  8. 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。
  9. Tial - based alloys with high specific strength are the most potential high temperature structural materials for aerospace application. however, the application of these materials is hindered by low resistance of damage, low room - temperature ductility and fracture toughness and high crack growth rate

    Tial基合金比強度高，是最具潛力的航空、航天用高溫結構材料之一，但因其具有較低的抗損傷能力，較低的室溫塑性、斷裂韌性和高裂紋擴展速率，這些斷裂特性阻礙了這種材料的應用，因而仍有必要研究其斷裂機理。
  10. ( 1 ) the data of fatigue crack growth rates at high temperature for four materials are gained. the laws of fatigue crack growth with temperature are researched

    （ 1 ）首次獲得了四種材料較為完整的高溫疲勞裂紋擴展數據，探索了這些材料隨溫度變化的疲勞裂紋擴展規律。
  11. The result of research enriches the trial method, get the fatigue crack growth laws of four kinds of pressure vessel materials at high temperature. provide a kind of numeric method

    本文的研究結果，豐富了試驗方法;得到四種壓力容器材料的高溫疲勞裂紋擴展規律;對疲勞裂紋擴展路徑判定提供一種計算機方法。
  12. We conduct fatigue crack growth experiment with four kinds of materials through the method, and get complete date of four kinds of materials " fatigue crack growth at first time. and also gain the laws of these four kinds of materials " at between 25 and 550 separately, that is the coefficient and exponent of paris ' s formula. meanwhile finding out the laws of fatigue crack growth of these four kinds of materials with the temperature changing

    採用上述試驗方法對四種材料高溫疲勞裂紋擴展行為進行試驗研究，首次獲得了16mnr 、 21 / 4cr1mo 、 21 / 4cr1mov和316l四種材料較為完整的高溫疲勞裂紋擴展數據，並得到四種材料在25 550溫度條件下的疲勞裂紋擴展規律表達式（即所對應的paris公式的系數和指數） ，找到了這些材料隨溫度變化的疲勞裂紋擴展規律。
  13. Increase of fatigue crack growth rates of 316l at elevated temperature mainly results from the drop of material intensity and elastic modulus

    由於溫度升高316l的彈性模量和強度下降，因此奧氏體材料疲勞裂紋擴展速率隨著溫度升高而提高。
  14. ( 3 ) the crack growth rates of 16mnr at 150 and 300 are lower than those at room temperature and 425. the crack growth rate at 425 is highest

    鐵素體材料16mnr在150和300的疲勞裂紋擴展速率比常溫和425時低， 425時疲勞裂紋擴展速率最高。
  15. ( 3 ) both oxide - induced closure and embrittlement of grain boundaries take place for 2 - cr1mo and 2 - cr1mov at high temperature. the change of fatigue crack growth rates with temperature is not so evident as 316land 16mnr

    裂紋表面氧化引進的閉合效應和晶界脆化相對比較均衡，裂紋擴展速率隨著溫度升高的變化沒有鐵素體和奧氏體材料明顯。
  16. The results at normal temperature have shown that klc of high polymer bonded explosive are very low comparing to metals and some high polymer materials, thus the ability of pbxs to resist crack expanding is very poor, and once some cracks occur inner a structural part of pbxs, the structure will fail very soon and easily. so in the process of machining and production, cracks should be avoided carefully in pbxs parts. some important laws about klc of the three typical pbxs above changes with temperature have been obtained as follows : a

    對三種具有代表性的高聚物粘結炸藥j1 、 j2和j3在常溫下的平面應變斷裂韌度進行了測試與研究，研究結果表明：相對于金屬及某些高分子材料而言，高聚物粘結炸藥的k _ （ ic ）值很低，即高聚物粘結炸藥的抗裂紋擴展能力是極差的，一旦炸藥構件中產生了裂紋，炸藥構件將極易破壞，因此，在高聚物粘結炸藥構件的生產及加工過程中，應避免裂紋的產生。
  17. One of the main failure patterns is caused by fatigue crack growth, so it is necessary to research material fatigue crack growth rate. so for, it is still a difficult problem to measure crack length at elevated temperature

    裂紋疲勞擴展導致的破壞成為設備失效的主要型式之一。因此對材料在高溫下疲勞裂紋擴展速率的研究成為工程界的迫切需要。
  18. ( 1 ) fatigue crack growth rates of 316l, 2 ( 1 / 4 ) cr1mo and 2 ( 1 / 4 ) cr1mov increase with temperature. the exponent n, in the paris law, da / dn = c ( k ) ", changes little with increasing temperature

    試驗溫度條件下奧氏體材料（ 316l ）與貝氏體材料（ 21 / 4cr1mo 、 21 / 4cr1mov ）的疲勞裂紋擴展速率隨著溫度的升高而增大，且paris公式中的指數n變化不大。
  19. Zhang liji ( material physics and chemistry ) directed by professor xie xiaoming this paper is intended to solve problems for those who are designing, using pbgas. failure mechanism, as well as cycles to failure of two groups of pbga samples ( with / without underfill ) for thermal cycling conditions in the range of - 40 ~ 125, were presented. the experiment shows that solder ball in the samples without underfill cracked after 500 times cycle, no crack was found in the underfilled samples even after 2700 cycles

    通過一系列的實驗，得到以下實驗結果： ?在本論文設定的溫度循環條件下，未充膠pbga樣品的熱疲勞品壽命在500周左右，充膠樣品的焊點壽命高於2700周； ?對于未充膠器件，中心距（ dnp ）是決定焊點應力、應變大小的最主要因素，裂紋總是從中心距較大處萌生並向中心處擴展； ?溫度循環的過程中焊盤附近焊料組織明顯粗化。
  20. Based on investigating a large amount of documents, the fatigue crack propagation behavior of mg alloys am50 & az91 is studied in this paper, as well as the tensile mechanical properties at elevated temperature. micro - mechanics of tensile deformation and the fcpr are also investigated by sem & tem

    本文在查閱大量相關文獻基礎上，對az91 、 am50鎂合金的疲勞裂紋擴展特性和高溫拉伸力學性能進行了一定的研究。藉助于掃描電鏡和透射電子顯微鏡，分析了拉伸變形和疲勞斷裂的微觀機制。
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