提出铝合金光试样非对称循环疲劳极限的估算公式。
The estimating formulae of nonsymmetry cycle fatigue limits for aluminium alloy smooth specimens are presented in this paper.
结果表明，晶粒尺寸越小，渗碳钢的疲劳极限越高。
Results show that the smaller the grain size is, the higher the fatigue limit is.
要求外推曲线依概率平滑通过相应的概率疲劳极限点。
The extrapolated curves are required to pass through the fatigue limits on a concurrently probabilistic sense by the Basquin equation.
研究了利用音叉原理自制的激振式疲劳极限测试系统。
This questionnaire is administered to the fatigue-limit testing system by using the theory of tuning fork.
喷丸后扭转疲劳极限提高的主要原因是残余压应力的作用。
Compressive residual stress are the main factor in the increase of torsion fatigue limit.
介绍了一种评价与测试灰铸铁铸件的拉压疲劳极限的方法。
A kind of method to evaluate and test the tension-compression fatigue strength of gray cast iron was introduced in this paper.
感应淬火实现了仿应力强化，提高了扭杆的疲劳极限和使用性能。
The induction quenching realizes imitated stress strengthening, raises fatigue limit and se…
列出了三种钢筋循环应力应变曲线的实测结果和疲劳极限的估值区间。
Both the measured results of the cyclic stress-strain curves of three kinds of rebars and their estimated intervals of fatigue limit are listed in the paper.
冷凝器铜管的工作环境使疲劳极限大为降低，加剧了疲劳裂纹的扩展。
The fatigue limit of condenser copper tube was reduced by working condition which aggravated the spread of crack.
对此，在提高轴头疲劳极限和降低变应力两方面采取了相应的改造措施。
To improve this I made a modification from two sides: to increase the fatigue limitation of shaft and to decrease dynamic-load stress.
根据应力场强法，分析了旋转弯曲疲劳极限与扭转疲劳极限之间的关系。
Through the stress field intensity approach, the relationship between the rotary bending fatigue limit and torsion fatigue limit was studied.
提出铝合金光试样非对称循环疲劳极限的估算公式。该公式可供疲劳设计使用。
The estimating formulae of nonsymmetry cycle fatigue limits for aluminium alloy smooth specimens are presented in this paper. The estimating formulae can be used for fatigue design.
对微动疲劳极限的估算方法进行了评述，并提出了一种新的微动疲劳极限估算方法；
The estimation method of fretting fatique limit are reviewed at first in this paper, then a new method of estimating fretting fatique limit is put forward.
提出了一个考虑应力集中和疲劳极限影响的缺口件频域随机振动疲劳寿命估算方法。
A frequency domain method for predicting the fatigue life of notched specimens under random vibration loading is presented.
由于升降法提供了具有存活率指标的疲劳极限值，可以为评定钢轨的质量提供新的指标。
This approach offers the value of fatigue limit with survival rate index, hence it may be used as a new criterion to estimate the rail quality.
该方法考虑了材料硬度对疲劳极限的影响，使半轴杆径设计随热处理方法不同而有所差异。
The method has considered the effect of difference in material hardness on the fatigue limit, which causes the shaft diameter design to become different depending on heat treatment difference.
用疲劳极限作为低于它将不出现疲劳的安全应力时，必须要注意。安全应力时，必须要注意。
Care should be taken when using the idea of an endurance limit as a "safe stress" below which fatigue will not occur.
采用S-N曲线研究硫酸阳极化、铬酸阳极化和硼酸硫酸阳极化对航空铝合金疲劳极限的影响。
The effect of sulfuric acid, chromate acid and boric/sulfuric acid anodizing on fatigue performance of aeronautic aluminum alloys was studied by using S-N curve.
采用经验公式获得材料的疲劳极限和疲劳性能参数，完成了太阳电池组件疲劳寿命的初步评估。
The fatigue limit and fatigue performance parameters of material were obtained by empirical formula. The fatigue life elementary evaluation of solar cell module was finished.
通过计算证明引起断裂的根本原因是动应力超过了梁的许用疲劳极限，另一原因是梁的结构不合理。
The primary cause of breakage is that the dynamic stress exceeded the allowable fatigue limit of the beam, and another cause is that the structure of the beam is unreasonable.
利用现有齿根弯曲疲劳极限应力数据及其它齿轮资料，提出了稳定工况下齿轮齿根弯曲强度可靠度计算方法。
Using present bending fatigue limit data of gear tooth and other materials of gears, the calculating method of re liability is proposed for bending strength of gear tooth st steady condition.
本文分析了静载荷及循环载荷下的微塑性变形行为，认为振动时效动应力的选择应以材料的疲劳极限作为依据。
Analyzing the micro plastic deformation of metal material under static load and cyclic stress, the scientific basis for choice dynamical stress of VSR is provide.
疲劳性能试验检验材料在交变载荷作用下抵抗破断能力的一种试验，其试验的疲劳极限作为工程构件的设计依据。
The fatigue function test is the one that to examine resist burst function on the change force. It's basis engineering component design which the fatigue limit by test.
在分析了疲劳损伤后未锈钢筋静强度试验数据的基础上提出了基于剩余强度的混凝土用钢筋疲劳极限的测定方法；
On the base of experimental data, a new fatigue limit measuring method of steel bar in concrete based on remained strength has been presented;
由于构件的材料参数、几何参数及所受的载荷均为随机变量，所以构件振动时其固有频率及疲劳极限亦为随机变量。
Material characteristics, geometrical property of a structural components and the load acted on it are random variables. As a result, its natural frequency and fatigue strength are random ones.
钢材的疲劳极限是对机器零件进行抗疲劳设计及可靠性分析的必需数据，但许多钢材的疲劳极限数据往往很难查找。
Fatigue strength of steel is an essential parameter in designing mechanical parts and analysing their reliability, but fatigue strength of steel is difficult 'to be got in manufacture.
在疲劳荷载、腐蚀共同作用下，拉索的可靠指标下降速度很快，疲劳极限状态对斜拉索及斜拉桥的安全起控制作用。
Because of the interaction of external loads and corrosion, the reliability index decays very quickly. And fatigue limit-state will take control of the safety of the cables and Bridges.
该系统利用微机控制，通过硬件控制系统设计和软件设计，实现了曲轴疲劳极限测试、数据处理等全过程的自动控制。
This testing system use microcomputer-control, by designing the hardware and software, to carry out the testing of fatigue-limit of crankshaft, and data process controled automatically.
在齿轮设计中，国产材料齿轮的弯曲疲劳极限应力仍然缺乏可靠的试验数据，大多是沿用ISO 6336提供的数据。
Bending fatigue limit stress is still short of reliable data for gear of domestic material in gear design mostly used are the data offered from ISO6336.
在齿轮设计中，国产材料齿轮的弯曲疲劳极限应力仍然缺乏可靠的试验数据，大多是沿用ISO 6336提供的数据。
Bending fatigue limit stress is still short of reliable data for gear of domestic material in gear design mostly used are the data offered from ISO6336.
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