静态疲劳

我们在下面的静态疲劳理论的主要研究中将用它作为一个衡量的尺度。

We shall use it as a yardstick in the following brief survey of the theories of static fatigue .

循环疲劳的裂纹扩展指数n值小于静态疲劳的n值。

The exponent of propagation of the cyclic fatigue n was lower than that of the static fatigue .

结果：肱二头肌在以60%MVC静态疲劳负荷过程中MPF呈线性下降。

Results : There was a significant monotonous decline in MPF during isometric fatigue contraction of 60 % MVC .

涂碳工艺稳定可靠，光纤静态疲劳参数n＞100，平均断裂应力＞60N，能够满足苛刻环境对光纤长期可靠性的要求。

The carbon-coated technology is stable and reliable , fibers n value larger than 100 , the average breakage stress larger than 60 N. It can satisfy the requirments of long-term reliability in harsh-term .

本文利用Si-O键离解的唯象系统解释稳定开裂速度和动态、静态疲劳现象，其结果具有指数形式并适应于不同大小的缺陷、工作应力和试验环境。

A phenomenological formulation of Si O bond dissociation is utilized to interpret stable crack velocity and dynamic fatigue phenomena . The resulting model has an exponential form and is applicable to a wide range of flaw sizes , service stresses , and test environments .

介绍了静态疲劳指数的测试方法以及通过减小疲劳指数来延长光纤使用寿命的办法。

The testing method of static fatigue and the method of improving lifespan of the fiber by reducing fatigue are introduced .

本文应用双扭法研究了四种电瓷材料静态疲劳裂纹扩展规律。

Crack propagation law under static fatigue state for some electric porcelains has been studied by means of double torsion specimens .

提出了一种预制耐火材料断裂韧性测试试件原生裂纹的新方法&高温静态疲劳法。

A new method of prefabricating original cracks in refractory material specimens for fracture toughness test using high temperature static fatigue technique is presented in this paper .

试验还表明电瓷材料静态疲劳裂纹扩展规律与材料的配方、环境和受力等因素有关。

On the basis of the above test , we suggest that the crack propagation law for all electric porcelains depends on sintering composition of test materials , environment and loading conditions .

论述了结构振动疲劳问题的概念及其与静态疲劳问题的区别，提出了反映结构及载荷动态特性的结构振动疲劳分析方法。

The concept of structure vibration fatigue and the difference from static fatigue as well as a structure vibration fatigue analysis method which can reflect the dynamic behavior of concerned structure and load were described in this paper .

指出在地应力作用下，围岩产生塑性区是不可避免的，塑性区内破碎岩石的蠕变及弹塑边界处岩石的静态疲劳是围岩变形随时间增大的主要原因。

The authors point out that the plastic zone in the wall rock is unavoidable because of very low strength of tuff . The creep of fracture rock in plastic zone and fatigue of rock at elastic-plastic boundary are the main reasons for time-dependent deformation of the rock .

脊椎植入物组件静态和疲劳性能试验方法研究

The static and fatigue testing on the mechanical properties of spinal arthrodesis implant assemblies

给出混凝土梁试样静态和疲劳弯曲损伤度试验分析计算式。

Analysis of test results of concrete beams which are subject to static and fatigue load is formulated .

研究了碳纤维增强双马来酰亚胺复合材料的层间剪切静态与疲劳加载性质，分析了不同基体、不同铺层界面对层剪性质的影响。

This paper concerns with static and fatigue behaviour of interlaminar shear in carbon fiber reinforced modified BMI resin matrix composites . The effects of interface with various kinds of resin matrix and different stacking sequence on interlaminar shear behaviour are analysed .

SiCp/ZTM材料高温静态及循环疲劳寿命的预测

Lifetime prediction for SiC p / ztm composite under static and cyclic fatigue loading at elevated temperature

静态负荷诱发肌肉疲劳后恢复期sEMG信号变化规律

SEMG signal change characteristics during the short period of recovery after muscular fatigue with isometric contractions

结论：静态负荷诱发肌肉疲劳过程中sEMG的MPF和C（n）呈单调递减，DET%呈单调递增性变化，且变化斜率具有运动负荷强度依赖性；

Conclusion : Both MPF and C ( n ) of sEMG decreased linearly while DET % increase linearly during isometric exercise-induced local muscle fatigue . And the slopes of them showed significant load dependence .

方法被试者为10名健康男性大学生，采用5和10kg强度的静态负荷诱发肱二头肌疲劳，并同步在头皮采集128导脑电信号；

Methods Ten male undergraduates performed two different isometric fatiguing tasks with the elbow flexion muscles under a load of 5 and 10 kg respectively , and synchronously EEG signals were collected from scalp .

根据非线性分析的结论进行静态拉伸、动态疲劳实验。

Make static stretching and dynamic fatigue experiment according to non-linear conclusion .

金属材料大气环境静态腐蚀老化的疲劳特性

Fatigue property of metals pre-corroded in atmospheric environment

因此，我们可以把奇异谱面积作为静态收缩时肌肉疲劳的评价指标。

Therefore the area could be used as an indicator of assessing muscle fatigue during static contractions .

目的探讨静态负荷诱发肌肉疲劳时肌电信号指标与主观疲劳感之间的数量关系。

Objective To investigate the numerical relationship between the changes of surface electromyographic ( sEMG ) signal indexes and subjective assessment of muscle fatigue during isometric contractions .

基于有限元法对驱动桥最小总成进行了静态结构分析、疲劳寿命分析和模态分析，并通过物理实验验证了结构分析和疲劳分析结果的正确性。

Based on finite element method , the static structural analysis , fatigue analysis and modal analysis are done to the driving axle , through driving bench tests , the accuracy of analysis results are verified .