裂縫擴展 的英文怎麼說
中文拼音 [lièféngkuòzhǎn]
裂縫擴展
英文
crack growth-
To change the layer number of cfrp ( one and two layer ), the paper analyzed the anti - fatigue performance from the points of material stress, degree and crack of the beams
通過改變碳纖維布的粘貼層數（ 1 、 2層） ，從材料的應變、梁的撓度、裂縫擴展情況三方面進行分析。Through the research and analysis on the three aspects concerning the base interface of the pavement panel, crack accumulation, expansion in the pavement panel and interaction between spring plates on the road surface as well as its damage on the road fatigue, it is first brought forth that the process of fissures and breakage in the cement concrete pavement can be divided into three stages, i. e. stage of initial crack formation and damage in the bottom of the pavement slab, stage of accumulation, intensifying & expansion in ruptures from load during the time of use and stage of fissures & breakage in the pavement
通過對路面板底界面開裂、路面板中裂縫積聚、擴展和路面表面車板相互作用及其對路面疲勞破壞的影響等三個層面的研究和分析，首次提出水泥混凝土路面的開裂和破壞過程可以分為三個階段，即路面板底初始損傷西南交通大學博士研究生學位論文第11頁和早期裂縫的形成階段、使用期間荷載作用對路面造成的開裂損傷累計、加劇和裂縫擴展階段以及路面斷裂破壞階段。But, for the reflective cracking of asphalt pavement with half rigid base course and the cracking of the ac overlay above joints ( cracks ) in existing pcc pavement, the results of research show that the fatigue life of ac layer is mainly the life of the crack propagating stage. so the theory and method of fatigue destructive mechanics ( fatigue fracture mechanics and fatigue damage mechanics ) should be used to study and design the pavement structures instead of traditional fatigue mechanics
而對於半剛性基層反射裂縫和舊水泥混凝土路面瀝青混凝土加鋪層接縫（裂縫）開裂，研究發現，瀝青結構層的疲勞壽命主要為裂縫擴展階段的壽命，此時不應採用傳統的疲勞力學進行研究和結構層設計，而應採用疲勞破壞力學（疲勞斷裂力學和疲勞損傷力學）理論與方法。Numerical simulation on crack propagation and reinforcement effectiveness of isolated rockmass between shiplocks of three gorges project
三峽工程永久船閘中隔墩裂縫擴展及加固效果數值分析Reflection cracking is the main cause for early deterioration of bituminous concrete overlays, and therefore its prevention is an important consideration in the design of overlays
反射裂縫擴展是瀝青混凝土罩面早期破壞的主要原因。因此在罩面設計中，預防和阻止反射裂縫的擴展是需要考慮的一個重要問題。Crack extension resistance curve of concrete
混凝土裂縫擴展阻力曲線Analysis of fatigue crack growth in concrete and the anti - cracking mechanism of fiber
混凝土疲勞裂縫擴展及纖維阻裂機理的研究4. based on the pavement mechanics models, fatigue cracking theory of fracture mechanics was used to investigate the rule of reflection cracking
基於選定的路面力學模型，採用斷裂力學中的疲勞裂縫擴展理論對路面反射裂縫的擴展規律進行分析。In spite of that, the cracks propagate stably in specimens for all types of tests. thus the paris formula can be used to describe the fatigue crack propagation, and the values of fatigue fracture parameters in the paris formula are regressed by using the results of fatigue damage and stress intensity factors computation
盡管如此，不論對哪種疲勞試驗，其試件疲勞裂縫擴展主要表現為穩定擴展，可以運用paris公式描述疲勞裂紋擴展階段，並利用疲勞損傷數值模擬計算結果和裂縫擴展過程中的應力強度因子回歸了疲勞裂縫擴展速率公式中的疲勞斷裂參數。A new method for calculating the strain energy release rate of delamination crack propagation at an interface between dissimlar materials was suggested by using the j - integral with a small flat rectangular contour near the crack tip
提出了一種通過特定的扁平小矩形路徑j積分，計算電子封裝中異質界面分層裂縫擴展能量釋放率的新方法。Then, the half - empirical paris equation, which can be used as a design base of flip chip package reliability, have been determined from the crack propagation rates da / dn measured and the energy release rates g simulated
然後由實驗測得界面裂縫擴展速率和有限元模擬給出的能量釋放率，擬合得到可作為倒裝焊封裝可靠性設計依據的paris半經驗方程。By parameter analysis, reflective crack ' s propagation potential and speed are also cleared
通過參數分析掌握了不同結構組合對反射裂縫擴展潛力及擴展速率的影響。At last, reflective crack ' s propagation speed of different pavement structural combination was analyzed too
最後運用paris公式對不同結構組合的路面進行了反射裂縫擴展速率的計算。Field test of dike construction with solidified lake dredged material
預裂爆破中爆生裂縫擴展的機理探討及預裂炮孔間距的設計方法Then, reflective crack ' s propagation model under traffic load coupled with temperature load was analyzed
而後對反射裂縫在行車荷載與溫度荷載耦合作用下的裂縫擴展模式進行了研究。( 4 ) what has cut the crack and expanded further has blown up simulation number value to calculate, expand the function played on the crack after verifying the main powder bag
（ 4 ）進行了切割裂隙進一步擴展的爆破模擬數值計算，驗證了主藥包對裂縫擴展所起的作用。A big technical problem for mass concrete stuctures during pouring is how tocontrol crack expansion
大體積混凝土基礎在澆灌中的一個重要技術課題是控制裂縫擴展。Two different reinforcing methodologies are applied : modification of the overlay characteristics by adding chopped glass fibers to the hot mixture asphalt ( hma ) and reinforcing asphalt overlay with glass grids. theory of fracture mechanics ( fm ) is employed to determine crack growth rates for the suggested anti - cracking overlay systems. asphalt mixture designing tests, three point bending tests and fatigue crack propagation tests were carried out. the critical stress intensity factors kic are determined for plain and reinforced asphalt concrete. depending on the fatigue crack propagation, the crack growth rate is determined for each type of anti - cracking system and the cracking process is also analyzed. one of the significant points in this study is the attempt to give better understanding of the crack propagation for multilayer asphaltic overlay or what are suggested herein to be called composite structure anti - cracking overlay system. the results indicate that the reinforcing materials improve anti - cracking characteristics of the asphalt concrete. composite structure anti - cracking overlay gives a good solution for the reflective cracking phenomenon over old cracked pavements
利用2種不同的方法加筋瀝青罩面:在瀝青混合料中加入短切玻璃纖維改善瀝青混凝土的特性，採用玻璃格珊加筋瀝青混凝土.應用斷裂力學方法分析瀝青路面裂縫擴展機理.採用瀝青混合料設計試驗、三點彎曲試驗和疲勞裂縫擴展試驗，確定加筋瀝青混凝土的臨界應力強度因子kic ，測量每一種瀝青罩面抗裂系統的裂縫擴展速率.本研究的主要特點是提出復合型抗裂罩面系統，分析了多層加筋瀝青罩面裂縫擴展過程，推薦了若干瀝青路面抗裂系統.結果證明，加筋材料可以提高瀝青罩面的抗裂特性，復合型抗裂罩面系統能夠有效地阻止反射裂縫的擴展In the second part of the paper, the bridging effect of reinforcement and factors influencing it as the crack in half rigid base course propagates into the asphalt layer are explored deeply
本文第二部分，對半剛性基層裂縫擴展至瀝青面層后加筋所發揮的橋聯效應及其影響因素進行了深入的探討。With this in minds, many researchers have proposed a variety of models for describing the nonlinear fracture of concrete for the past decades. amid them most take the critical stress intensity factor kic as the fracture toughness, a sign of ability to resist the crack extension
對此，在過去的幾十年裡，眾多研究人員提出了很多描述混凝土非線性斷裂的模型，而其中的大多數斷裂模型都以臨界應力強度因子k _ （ ic ）作為抵抗裂縫擴展阻力的斷裂韌度。分享友人