surface fatigue的例句大全

A half-analytical expression of stress concentration coefficents due to surface roughness was proposed, and a prediction method of fatigue limits of peened specimens with surface fatigue sources was suggested.

提出了表面粗糙度引起的应力集中系数的半解析表达式以及疲劳源在表面时疲劳极限的预测方法。

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In the present work discovering cutter mark of machining become surface fatigue crack fountain.

在试验过程中发现,疲劳裂纹源多为机加工留在表面的刀痕、划痕.

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Shlyannikov , Z . B . Kuang , F . P . Yang ( 2004 ), Surface fatigue crack growth behavior , Russian journal Power Engineering Problems.

杨凤鹏, 林卓英 ( 2004 ), 表面裂纹疲劳扩展的试验, 北京科技大学学报.

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Three-dimensional effect of surface fatigue crack propagation

表面疲劳裂纹扩展的三维效应

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With tensile round rob as a typical instance, the three-dimensional geometry effects and its characteristics of surface fatigue crack propagation are discussed and investigated.

以拉伸圆杆为例，阐述表面疲劳裂纹扩展中的三维效应及其特点。

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The surface fatigue is induced by cyclic stress.

循环变化的接触应力产生的表面疲劳磨损机理。

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Study on Supervision System for Surface Fatigue Crack

表面疲劳裂纹监测系统研制

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Study on the Surface Treatment Process of H 13 Type Hot Work Steel and Its Subsequent Thermal Fatigue and Erosion Behaviors

热作模具钢（H13型）表面处理及其热疲劳、热熔损性能研究

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This kind of periodic hot and cold alternation and deformed tension lead to mechanical fatigue and cause tiny crack on the surface of roll shell.

这种周而复始的冷热交替以及在变形应力作用下，引起辊套表面机械疲劳而导致微裂纹产生。

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Analysis of Fatigue Life of Thick-Wall Cylinder with Inner Surface Crack Subjected to High Pressure

具有内表面裂纹高压厚壁圆管的疲劳寿命分析

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The fatigue stresses can be estimated with striation widths on fracture surface for Titanium alloys under experimental and service conditions.

对钛合金在实验和工程应用条件下的构件进行断口定量反推，研究疲劳条带间距反推疲劳应力在钛合金应用的可行性。

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The test indicates that contact fatigue life and wear resistance of surface quenched casting steels and Bainite quenched spherical cast iron are increased largely.

试验表明：经过表面淬火的铸钢和经过贝氏体淬火的球墨铸铁，其接触疲劳寿命和耐磨性大幅度提高。

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Analysis of Gear Surface Pitting and Spalling of Fatigue in the Close Gear-driven

闭式齿轮传动齿面疲劳点蚀和剥落的分析

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Contact fatigue test of surface hardened gears

硬齿面齿轮的接触疲劳试验

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Roughness on the metal specimen polished surface will be induced when it yields plastic deform or fatigue damage for its interior microscopic crystal grain slip dislocation, and this is very different when it yields elastic deform.

与仅仅承受弹性变形时不同，当金属试件承受塑性变形或发生疲劳损伤时，内部微观晶粒滑移位错等会导致表面粗糙化。

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The main cause of thermal shock fatigue is the co-action of micro-cracks, crack bridge and deflection," crushed particles" and roughness on the crack surface during thermal shock cycling.

热震过程中的微裂纹，裂纹桥接和偏转，热震裂纹表面的碎粒及粗糙性等的共同作用是Al2O3-TiC复合陶瓷热震疲劳产生的主要机制。

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The shape of three-dimensional surface cracks in fatigue

三维表面裂纹扩展过程中的形状变化

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In the paper, Based on the theory of compound crack and fracture mechanics and surface liner cracks of drill string often occurring in process of production and application, a fatigue life model of drill string under the interaction of torsion and axial vibration is established.

根据复合型裂纹扩展理论和断裂力学方法，以及钻柱在生产和应用中的表面线性裂纹现象，提出了钻柱在扭转、纵向振动下的疲劳寿命计算模型。

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Columnar grain boundaries crack in tensile fatiguing, which tends to stop the propagation of fatigue cracks, and decreases the sensitivity of fatigue to surface defects, thus beneficial to tensile fatigue life.

疲劳拉伸中柱晶晶界开裂，阻隔了疲劳裂纹扩展，降低了疲劳裂纹对表面缺陷的敏感性，有利于提高疲劳寿命。

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After the wheel running many times on the rail, the plastic deformation on the rail would accumulate and the surface of rail would fatigue.

在列车的多次运行过程后，这样的塑性变形会积累，以至疲劳破坏。

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