裂紋延展 的英文怎麼說
中文拼音 [lièwényánzhǎn]
裂紋延展
英文
crack advance-
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。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。Standard test method for grain crack and extension of leather by the mullen test
用莫林法測定皮革紋裂和延展度的標準試驗方法Abstract : in this article, the optimization of surface crack detection of speed reducer gear was made using fuzzy set theory, the result show that the rotation magnetic field is the best way of surface crack detection and lots of extending surface fatigue cracks were found in practice
文摘:採用模糊集的貼近度計算對齒輪表面探傷方法進行了優化選擇，表明旋轉磁場探傷是齒輪表面探傷的最佳方法，在實用中檢測出大量的正在延伸擴展的表面疲勞裂紋。Calculating example shows that the fracture parameters of viscoelastic interface crack have a time correlation behave, its extend is a kind of delay instability
計算表明，粘彈性界面裂紋的斷裂參量表現為時間相依性，粘彈性界面裂紋的擴展一般為延遲失穩。Experimental results indicated that the polypropylene fiber can improve the workability of concrete availably, and can increase the presentation quality of structures with the voids and pits decreased ; the cracks of beam are controlled effectively, the width and length of crack decreased, the dispersibility of crack in beam face improved, and the ductility of beam increased ; and the cracking load of reinforced concrete beam is increased, the amplify up to about 30 %, simultaneity the ultimate bear capacity increased
試驗研究表明，使用聚丙烯纖維后，能有效改善新拌混凝土的和易性，並能增強混凝土構件的外觀質量，減少構件表面蜂窩、麻面、氣孔、細小裂紋等；同時，在破壞試驗過程中發現梁的裂縫能得到有效控制，裂縫寬度減小，裂縫的發展高度降低，裂縫的條數增加，提高了梁截面的裂縫分散能力，增強了梁中混凝土的韌性；提高了鋼筋混凝土梁的開裂荷載，幅度可達30左右，增強了結構的延性，提高了結構的抗裂性能和屈服荷載。It is found that the result predicted is in a good agreement with the experiment, and the cell model gives a good description of ductile crack growth
表明特殊單元模型能很好地描述材料的抗延性裂紋擴展阻力特性。The effects of strength mis - matching and specimen geometry on the resistance to ductile crack growth for welded joint were conducted by 3 - d fe analysis based on the micro - damage model
摘要基於材料微觀損傷模型，採用三維有限元數值方法，定量研究了焊接接頭中強度匹配、試件幾何型式對接頭抗延性裂紋擴展阻力特性的影響。The crack model of ti - 2al - 2. 5zr is proposed as follows : ( a ) hydrogen diffuse to the crack tip under applied stress ; ( b ) precipitation of hydride ; ( c ) crack propagation by hydride and precipitation through autocatalytic process ; ( d ) repeat the former steps ; ( e ) final fracture
該合金氫致延遲斷裂的機理為： h ）氫在應力作用下向裂紋尖端擴散； （ b ）在裂紋尖端形成氫化物並長大： k ）主裂紋沿氫化物擴展； m重復h人比、 （ c ） ； k ）最後斷裂。The research work of the thesis include mainly : ( 1 ) observe a phenomenon which the two fracture modes are simultaneously found near crack tip of a four - point - bend specimen when the ratio of m / q is close to 3. 0mm, criteria m / q, when the fracture mode of four - point - bend specimen transits from void - mode to shear - mode. intensely location plastic distortion is observed in the front of crack tip and the macro - fracture of the specimen with the same m / q belongs to shear - mode fracture
本文主要在以下幾個方面取得了一定的進展：通過四點彎試件的斷口和切片試驗，觀察到裂紋尖端同時存在兩種斷裂機制? ?在兩種斷裂模式相互轉化的臨界狀態附近，裂紋前方既有鈍化和延伸區中的空穴形核擴張，又有銳化角前劇烈的集中剪切變形。分享友人