裂紋延伸 的英文怎麼說
中文拼音 [lièwényánshēn]
裂紋延伸
英文
crack growth-
Numerical simulation of propagation of oriented crack prefabricated in hydraulic fracturing
預制定向裂紋水力壓裂延伸數值模擬The yield zones he found in polycabonate were slits extending ahead of the crack.
他發現聚碳酸脂中的屈服區是延伸至裂紋前沿的長條裂縫。Fracture mechanics toughness tests - method for determination of fracture resistance curves and initiation values for stable crack extension in metallic materials
斷裂機械韌性試驗.金屬材料穩定裂紋延伸的抗斷裂曲線和初始值的測定方法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。The dsf is a high strength for regarding polypropylene as raw material, with special craft making, fiber of low extension polypropylene, and can avaylably control the concrete, and fuck, temperature to contract the produce, improving of crack the concrete s anti the function, anti to pound at the ability, extension concrete the service life that product
丹強絲一種以聚丙烯為原料,以特殊工藝製造的高強度,低延伸性聚丙烯纖維,可以有效地控制混凝土塑性,干縮、溫度收縮裂紋的產生,改善混凝土的抗滲性能,抗沖擊能力,延長混凝土製品的使用壽命。In the view of the concrete ' s micro construction, it can conclude that the boundary is the weakest. minute crack occurs firstly at the boundary, and then it spread toward the cements, which are produced by thermal stress
該模型是從混凝土組成的微細觀角度出發,簡化為水泥砂漿包圍骨料的平面問題,微裂紋首先在界面上產生然後向水泥砂漿中延伸。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。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