impact fracture 中文意思是什麼
impact fracture
解釋
沖幌裂-
A dynamic fracture analysis of center - cracked brazilian disc specimens under mixed mode diametric impact loading
徑向沖擊中心直裂紋巴西圓盤的復合型動態斷裂分析 -
Sicp / al matrix composites, with 5, 15 and 25 % volume fraction of sic particles, were prepared by vacuum hot - pressing sintering processing in this paper. based on mechanics properties, sem observation and energy dispersive x - ray analysis, the interface reaction phenomenon of sicp / al composites made by vacuum hot - pressing sintering, as well as the reinforcement and fracture mechanisms of this composite were analyzed. the dynamic responses of sipc / al composites were studied by a split hopkinson high - speed pressure bar impact system which strain rate was from quasistatic state strain rate ( 3. 3 10 - 3s - 1 ) to dynamic state strain rate ( 5. 2 103 s - 1 )
本研究以武裝直升飛機防護裝甲材料為研究對象，採用真空熱壓粉末冶金燒結工藝制備了含sic顆粒體積分數分別為5 、 15和25的sic顆粒增強鋁基復合材料，結合其力學性能、掃描電鏡和界面微區能譜分析結果，分析了sic _ p al復合材料的真空燒結過程中的界面現象，以及材料增強和斷裂機理，並利用hopkinson高速壓桿沖擊實驗系統對其從靜態到動態（應變率為3 . 3 10 ~ （ - 3 ） s ~ （ - 1 ） 5 . 2 10 ~ 3s ~ （ - 1 ） ）的壓縮破壞響應進行了研究，分析了不同體積分數sic _ p al復合材料高應變率壓縮載荷下，材料的變形和微觀損傷機理，以及利用高速沖擊空氣炮測定了改復合材料制備剃度復合板的穿透性能。 -
Metallic materials - determination of charpy impact fracture surface
金屬夏比沖擊斷口測定方法 -
And there is a growing interest in the development of meshless methods as the meshless characteristic has distinctive advantages to deal with high - speed impact, industrial forming, extremely large deformation, fracture and fragmentation problems, etc. it offers the tremendous value in theory and potential in industrial application
無網格方法是在近幾年迅速興起的一種數值分析方法，由於無網格特性對高速碰撞、超大變形、斷裂破壞等問題的分析具有明顯的優勢，對其的研究方興未艾。 -
Toughening thermoset matrix composites with interlayered thermoplastic particles is an effective method to improve fracture toughness and impact resistance without sacrificing hot / wet properties. furthermore, transverse strength, fatigue resistance and solvent resistance can also be enhanced. drapability and tackness of interleaved prepreg is maintained as conventional level
對樹脂基體復合材料採取層間顆粒增韌是提高復合材料層壓板韌性、抗沖擊能力和抗分層能力的有效途徑，在保持原有復合材料濕熱性能的前提下，通過層間顆粒增韌，還可以改善垂直纖維方向的強度、抗疲勞性能以及耐溶劑性，並不影響原有的成型工藝。 -
Evaluation of fracture toughness of three - point bend specimen from the instrumented impact test based on the local approach
基於局部法由示波沖擊試驗對斷裂韌性的預測 -
The impact of random grain boundary distribution and connectivity on intergranular fracture of polycrystalline materials
隨機晶界分佈和連通性對晶間破壞行為的影響 -
The second part concerns about the fracture analysis of cracked metalic structures. the last part investigates the behavior of impact dents on aircraft windshield glass and their possibility to be analyzed using fracture mechanics. in chapter 1, a review is made to the resent developments of cumulative damage models and fatigue life prediction methodology of composite laminates
本論文研究飛機結構疲勞和損傷容限分析中的若干問題，按研究的對象（材料、結構）可以大致劃分為三個組成部分：復合材料層壓結構疲勞分析，第一章第三章；金屬結構斷裂分析，第四、五章；座艙蓋玻璃撞擊損傷的斷裂分析，第六章。 -
A small impact was noted in bone density in the arm, but it cut the risk of fracture by just 0. 2 per cent, according to the report published in the cochrane library
盡管研究人員發現，這些被調查者手臂處的骨密度得到了很小的改善，但是這只能將該部位發生骨折的危險降低區區0 . 2 。 -
This paper introduces the principle of instrumented impact test method and its application in production and scientific research. emphasis is laid on achievements obtained in the field of developing measurement technique of fracture mechanics, analyzing characteristic parameter of impact curves as well as studying fracture mechanism of materials. in addition, the application and developing trends in the near future are also discussed in the paper
介紹了儀器化沖擊試驗方法的基本原理及其在生產和科研中的應用，重點闡述了儀器化沖擊試驗方法在動態斷裂力學測試技術中的開發、沖擊曲線參數分析、材料斷裂機理研究等領域所取得的成果，並展望了這一方法未來的應用和發展趨勢。 -
Cleavage and fracture have a strong impact on blasted result for rock mass
摘要節理裂隙對巖體爆破效果有很大的影響。 -
Impact fracture toughnesses of gfrp and cfrp laminates
沖擊載荷下復合材料層板斷裂韌性的實驗研究 -
The analysis of fractal dimension of impact fracture in metallic welding joint
焊縫沖擊斷口的分形分析 -
The numerical simulation of high velocity impact fracture process using square notched specimens
帶長方形切口式樣的沖擊破壞數值模擬 -
The mechanica1 performance is superior to p1ain pp. 0n the sem photographs of impact fracture surface, it was observed that the pu11out of si licate 1ayers hard1y was found and the compat ibi 1 ity of pp and montmori l 1oni te was improved great l y. xrd resu1 ts suggested that the basal spacing of silicate layer was about 4
小角xrd結果顯示，復合材料中無機片層間距d _ （ 001 ）在4 . 0nm左右，為插層型材料，通過dsc測試發現復合材料的熔點和分解溫度均有一定的提高，蒙脫土的加入可提高材料的熱性能。 -
The study gives a qualitative and quantitative dynamic fracture analysis, and a three - dimensional finite element program is developed to compute the dynamic stress intensity factor for a semi elliptic surface crack in an elastic solid of finite size under impact loading
在定量分析中，編寫了該裂紋結構受沖擊載荷作用下的全尺寸三維動態有限元程序，並進行了大規模的數值計算，確定了表面裂紋動態應力強度因子，論證了該事故發生的原因。 -
It follows that the fracture behaviour and the impact toughness and magnetic properties, especially the coercivity, were dramaticly different according to the ways elements addition
結果表明，不同合金元素或不同添加方式，對磁體斷裂方式、沖擊韌性及磁性能（特別是矯頑力）有不同的影響。 -
The impact toughness of the magnets with 0. 05 % ag was 70 % higher than that of commercial n35 magnets without magnetic properties deterioration. and there was no visible changes to fracture behaviour of these magnets
添加0 . 05 % ag磁體沖擊韌性較普通商業n35磁體提高70 % ，同時磁性能幾乎沒有降低，並且該成分磁體斷裂方式沒有明顯改變。 -
The impact toughness of the magnets could be improve with appropriate alloying elements addition during ball milling while there was no visible changes to the fracture behaviour, and the coercivity of magnets with al and ti was significantly enhanced
晶間單獨或復合添加適量合金元素對磁體沖擊韌性均有一定提高作用，但對斷裂模式沒有明顯影響，復合添加ti 、 al能顯著提高磁體矯頑力。 -
The impact toughness of the magnets with al and ti during melting could be prominently improve, and the fracture behaviour of the magnets was visibly changed, but the coercivity of magnets depended on the proportion of al and ti
熔煉復合添加ti 、 al明顯提高磁體沖擊韌性，並且對磁體斷裂模式影響較大，矯頑力隨ti 、 al的添加比例出現較大波動。熔煉合金化的nd15 . 5fe76 . 5al1ti0 . 5b6 . 5磁體沖擊韌性較商業n35磁體提高了51 . 8 % ，磁性能略有下降。
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