層狀裂紋 的英文怎麼說
中文拼音 [céngzhuànglièwén]
層狀裂紋
英文
laminar crack-
There are typical laminated structure, soft sedimentary - slipping deformed structure, syngenetic brecciated structure in the ore which are the mirror of syngenetic sedimentation. the other type of ore has the charactristic of epigenetic mineralization, which is called as telescoped ore. the ore occurs in vein, pocket, lensoid and bedd
礦石中發育典型的紋層狀構造、軟沉積滑動變形構造、同生角礫構造等反映同生沉積特徵的礦石構造；另一類礦石具有明顯的後生成礦特點，稱之為疊生改造型礦石，礦石產于脈狀、囊狀、透鏡狀及似層狀礦體中，與燕山期巖漿巖及斷裂裂隙構造關系密切。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。The result showed that the failure of the steel die was mainly attributed to the generation of a large amount of meshy cracks on chromium plating surface
結果表明，鍍鉻層表面存在網狀裂紋是導致模具表面出現微裂縫的主要原因。For the optimization problem of fgms fracture performance, this paper fundamentally studies the fgm coating plate with interface edge - cracks, and establishes the approximate analysis method of the driving force for interface edge - cracks growth - energy release rate. this paper considers energy release rate as objective function and the optimization problem of fgms fracture performance is carried out by the paper mention optimization scheme
關于梯度材料破壞性能的優化設計問題，本文對含邊界界面裂紋的平板狀梯度塗層進行了初步的研究，建立了邊界界面裂紋擴展驅動力- -能量釋放率的近似分析方法，以能量釋放率為優化設計目標函數採用本文提出的優化設計方案對梯度材料的破壞性能進行優化設計。And then a laminar structure was formed in the front of the crack tip. a microcrack might nucleate at the crack tip and propagate ahead perpendicular to the laminar structure
首次發現純鎂裂尖變形以單系滑移為主，其斷裂過程是滑移減薄，形成層狀結構，然後裂紋垂直於層狀結構擴展。It is one of mechanisms of plastic distortion, at the same time it is also the beginning of microcosmic damage and rupture before the macroscopical destroying of materials, it representatives a mid - state between materials " macroscopical rupture and bend, it is considered a premonitory that the rupture of polymer material, which get common attention by scholar inside and outside nation. therefore, the research for engineering polymer in mechanic action of non - linearity destroy such as distortion, destroy and depe nd on time and temperature is valuable in theoretic research and actual application, which offer the important theoretic gist for changing complex material ' s capability and actualize polymer ' s perfect application with high quality of capability in engineering
同時，銀紋化和銀紋損傷是高聚物特有的一種現象，細觀層次的銀紋引發、生長和斷裂在聚合物損傷斷裂的整個過程中起著承前啟后的作用，它是溝通宏、微觀變形機制的橋梁，是材料塑性變形的機制之一，同時又是材料宏觀破壞以前微觀上損傷、破壞的開始，它代表材料微觀斷裂和屈服之間的一個中間狀態，可以看作是聚合物材料宏觀斷裂的先兆，受到國內外學者們的廣泛關注。因此，開展工程聚合物變形、破壞以及時間相依和溫度依賴性等非線性力學行為研究，探討聚合物破壞過程中的非線性力學行為，為聚合物及其復合材料的改性、實現聚合物的工程化與高性能化提供重要的理論依據，具有重要的理論研究意義和實際應用價值。分享友人