起裂紋 的英文怎麼說
中文拼音 [qǐlièwén]
起裂紋
英文
checking-
Based on the previous research on the portal crane administration, one standpoint put forward in this paper is idea that is on the foundation of reliability in this paper, two viewpoints take shape when reason is analyzed, that is fatigue break and appearing the flaw that will extend. what is the fatigue break ? ( this phenomenon is always happen in some place ), the fatigue is that board appears apophysis and concave when the board is pressed. so that the board ability of bearing the weight of load will descend
本論文建立在已有的港口裝卸機械管理的研究基礎之上,進一步提出了以可靠性為基礎的港口裝卸機械的管理思想,已有的研究表明,港口機械設備破壞主要由於兩個原因,第一是穩定性問題,特別是構件的局部穩定性,所謂穩定性是指:在板的平面內,板受到平行於板面的壓力作用,使板發生隆起、內陷等凹凸不平的結果,從而使板受載能力減弱;第二是結構出現疲勞裂紋及其擴展,這是由於設備長時期運行,而造成設備某些部位出現裂紋並得以擴展,使設備承載能力下降。This indicated that the fracture had initiated at the unfused butt weld in the longitudinal stiffener.
研究表明裂紋是從縱向加勁助未熔透的對接焊縫中起始的。The familiar defects of powerful spinning have been listed, such as crack, rising skin, gluing knot, piling, speed bulge, the wound inside the wall, expanding etc. with analysis of the cause and probing into treatments according to the basic fondant and spinning craft parameters
摘要列舉了強力旋壓常見缺陷,例如裂紋、起皮、堆積、粘結、鼓包、內壁劃傷、擴徑等,分析了產生的原因,針對坯料和旋壓工藝參數,簡要探討了應對措施。: 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。Failure analysis of main landing gear wheels
主起落架輪軸裂紋分析Crack propagation from the flameout edge can be modeled by considering an edge crack in the martensite surface from flame cutting.
裂紋從燒割邊緣的擴展可模擬為一個從燒割處的馬氏體表面起始的邊裂紋。In conclusion, the research of this thesis indicate that the behavior of crack with a arc - tip is the same as that of a spiculate crack, but its load of fracture initiation is higher than the latter
總之,本文的研究結果表明,裂尖寬度為0 . 12mm的非尖銳裂紋的斷裂行為與尖銳裂紋基本相同,但起裂載荷較高。Under the complex loadings, the surface flaws of large complex structures and the original defects of materials would initiate the propagation of micro three - dimensional ( 3d ) cracks, and result in catastrophic accidents. for the limitations of the traditional theories of two - dimensional cracks, the safety of actual structures containing 3d cracks cannot be guaranteed completely without the out - of - plane stress constraint
復雜應力作用下,宏觀復雜結構表面加工質量和材料本身固有缺陷以及外來損傷等會引起三維裂紋的萌生、擴展,最終導致災難性的破壞,而傳統二維裂紋理論在解決實際三維裂紋問題時出現不足,無法完全保障結構安全。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。To testify ae ' s prediction function, we use the acoustic emission in a great deal of fatigue experiments, and have attained experiential data which can be included in the ae features database. the building of ae features database is investigated
?通過大量的實驗,對聲發射技術在直升機部件疲勞裂紋檢測中的應用進行研究,驗證了應用聲發射技術進行監測所起到的預警作用,獲得的大量實驗數據可作為經驗數據納入到聲發射特性參數數據庫中。At least 60 bridge sites developed fatigue cracks as a result of out-of-plane distortion in a small gap.
至少有60座橋上出現的疲勞裂紋是由於小間隙處的面外變形引起的。The theoretical and experimental results for the 7075-t6 wol specimens presented above both show that intermittent proofing provides early warning of impending failure due to the growth of fatigue cracks.
以上所討論的7075T6WOL試樣的理論和試驗結果都證實:對因疲勞裂紋擴展即將引起的破壞,用間歇驗證試驗法可以作出早期警報。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。The nano diamond particle improve friction surface lubricate condition, mainly by the nano particle repair and inlay effection nanometer particle deposition in the friction contact region, fills the friction damage spot promptly, has the repair function, simultaneously prevents the crack from further development, achieves the goal of prolong fatigue life
納米金剛石微粒通過微粒修復作用和鑲嵌作用,改善摩擦表面的潤滑狀態。在摩擦過程中,納米微粒沉積在摩擦接觸區域,填補摩擦損傷部位,起到修復作用,同時阻止裂紋的進一步發展,延長了陶瓷球疲勞壽命。The results of a series of experiments on airplane nose gear rotating arm show that the technology is an effective method
對飛機前起落架旋轉臂試件進行的多次試驗,證明此方法對金屬裂紋的檢測是有效的。Defects of the first kind are microcracks caused by surface damage to the finished product.
第一類缺陷,是微裂紋,它是由於製品加工形成的表面損傷引起的。( 3 ) the transformation for turbo cycling compressor is designed in both differential pressure seal parts at the inlet and outlet and the connecting construction of the positioning key and turbo cycling compressor casing : replace wave pipe of differential pressure seal parts with asbestos jointing and improve its reliability ; jointing connection of the positioning key and turbo cycling compressor casing has been converted into screw thread connection and avoid the dangers from jointing crack
( 3 )從進出口壓差密封部件和定位鍵與外殼間聯接結構兩方面入手,提出了相應的改造方案:將機組進出口壓差的密封部件由波紋管改為石棉填料函,提高了其運行可靠性;將內件周向定位鍵與外殼間的聯接結構由焊接改為螺紋聯接,避免了焊接裂紋引起的安全事故。The pavement panel, under load and with already existing initial cracking & inherent damaged conditions as well as its cracks & damage, further accumulates and expanses, which lays a foundation for the fissures & breakage ; the surface layer - as the uneven pavement brings about interaction between spring plates which results in impact on the vehicle load, is the main reason speeding up the fissures in the pavement panel
在荷載作用下,使得已經存在初始裂紋和固有損傷條件的路面板,其裂縫和損傷進一步累積和拓展,為路面的斷裂破壞奠定了基礎;表面層? ?由於路面表面的不平整而引起的車板相互作用帶來車輛運動荷載的沖擊,是加速路面板斷裂的主要原因。The macro - mechanical properties ( the elastic constants ) of the fractured rocks can be connected with the micro - parameter of crack ( crack number density )
這個模型將微觀隨機參數(裂紋數密度)與非均勻裂縫介質的宏觀性質(彈性常數)直接聯系起來。Sum them up to two parts : develop non - elastic area around crack tip to improve nature toughness of the composites and induce bridge between crack by supplement
歸納起來可分為兩類:即通過在裂紋尖端周圍長生非彈性區域來增加材料的固有韌性和採用補強劑來引起裂紋橋聯。分享友人