• Results show that the smaller the grain size is, the higher the fatigue limit is.

    结果表明晶粒尺寸越小,渗碳钢疲劳极限越高

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  • The fatigue limit of Ti-Ni SMA spring could be efficiently increased by shot-peening.

    丸处理可有效提高弹簧疲劳寿命。

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  • Compressive residual stress are the main factor in the increase of torsion fatigue limit.

    扭转疲劳极限提高主要原因残余应力作用。

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  • The induction quenching realizes imitated stress strengthening, raises fatigue limit and se…

    感应淬火实现了仿应力强化提高了扭杆疲劳极限使用性能。

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  • The fatigue limit of condenser copper tube was reduced by working condition which aggravated the spread of crack.

    冷凝器铜管工作环境使疲劳极限大为降低,加剧疲劳裂纹的扩展

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  • Through the stress field intensity approach, the relationship between the rotary bending fatigue limit and torsion fatigue limit was studied.

    根据应力场分析旋转弯曲疲劳极限扭转疲劳极限之间关系

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  • On the base of experimental data, a new fatigue limit measuring method of steel bar in concrete based on remained strength has been presented;

    分析疲劳损伤后未锈钢筋强度试验数据基础提出了基于剩余强度的混凝土钢筋疲劳极限测定方法

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  • 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.

    由于升降提供具有存活率指标疲劳极限值可以评定钢轨的质量提供新的指标

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  • Abstract :For obtaining fatigue limit and dealing with censored data, the "pair-life-weighted" and "censored life approximation" methods were proposed.

    针对概率疲劳统计中疲劳极限定时尾数据的处理问题,提出了求解疲劳极限的“配对寿命加权求解疲劳曲线的“截尾寿命近似法”。

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  • 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.

    齿轮设计中,国产材料齿轮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提供数据。

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  • The recurrence formula of the fatigue damage model is derived under multilevel loading, and the loading case below the fatigue limit is also considered.

    然后推导疲劳损伤累积模型多级加载推公式。

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  • 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.

    列出钢筋循环应力应变曲线实测结果疲劳极限估值区间

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  • 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.

    疲劳性能试验检验材料交变载荷作用抵抗断能力一种试验,试验的疲劳极限作为工程构件设计依据

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  • By using the nonlinear cumulative fatigue damage model considering the influence of the fatigue limit and the cyclic stress amplitude, the remaining life formula of the.

    获得了电阻变化测量疲劳损伤公式,应用计疲劳极限循环应力影响非线性累积疲劳损伤模型,给出了金属材料疲劳损伤的剩余寿命预测公式。

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  • The predicted valued of the fatigue limit of crack initiation the fatigue limit of fracture, and the non-propagating crack length agreed well with the experimental values.

    包括裂纹萌生极限断裂极限以及停止扩展裂纹长度预测值实验结果吻合

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  • 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.

    采用经验公式获得材料疲劳极限疲劳性能参数完成了太阳电池组件疲劳寿命初步评估

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  • 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.

    通过计算证明引起断裂根本原因应力超过许用疲劳极限另一原因是梁的结构不合理。

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  • Compared with normal rods, the carbon fibre coiled rod behaves much more advantages, such as lighter weight, better elasticity, resisting corrosion, higher fatigue limit, etc.

    碳纤维连续抽油普通抽油相比具有质量轻、弹性腐蚀、耐疲劳等优点。

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  • Load spectra are important basis on which the classification of cranes, the experimental study of fatigue limit of the crane framework, and the evaluation of its life limit are based.

    载荷起重机分级结构疲劳强度试验研究寿命估算重要依据

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  • 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.

    疲劳荷载腐蚀共同作用下,拉可靠指标下降速度很快,疲劳极限状态对斜拉索斜拉桥安全控制作用。

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  • The result indicates that the improvement of the fatigue limit is due to the nano-crystallization and severe plastic deformation in the surface layer induced by high-energy shot peening.

    结果表明高能喷丸后表层组织发生严重塑性变形实现组织纳米化,提高弯曲疲劳寿命主要原因

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  • 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.

    利用现有齿根弯曲疲劳极限应力数据其它齿轮资料提出稳定工况下齿轮齿根弯曲强度可靠度计算方法

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  • 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.

    方法考虑材料硬度疲劳极限影响使轴杆设计热处理方法不同而有所差异。

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  • On the basis of fatigue test under high-low two stresses loading, the paper testifies that the equivalent damage lines do not parallel each other and tend to converge slightly over the fatigue limit.

    本文根据高低二级应力作用疲劳寿命试验验证了等损伤线互不平行且向下汇聚

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  • But steel alloys subjected to cyclic stress levels below their endurance limit rarely fail as a result of fatigue.

    但是钢铁合金耐用度限制下,作为疲劳结果它们经受周期压力级别很少失灵

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  • Fatigue damage estimation of the tendons was made using fracture mechanics approach, establishing the fracture crack growth rate model and limit state equations for failure modes.

    疲劳寿命计算采用断裂力学方法建立疲劳裂纹扩展模型失效模式极限状态方程

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  • The side-rolling resistant torsion bar made of this steel exhibits high fatigue life span and elastic limit.

    采用该材料制造侧滚扭杆具有疲劳寿命高的弹性极限

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  • It should be noted that the values provided in the product tables for load and speed ratings as well as for the fatigue load limit are heavily rounded.

    注意产品列表所提供关于负载速度级别疲劳负荷限值数字均已四舍五入

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  • 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.

    系统利用微机控制,通过硬件控制系统设计软件设计,实现曲轴疲劳极限测试数据处理等全过程自动控制。

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  • 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.

    系统利用微机控制,通过硬件控制系统设计软件设计,实现曲轴疲劳极限测试数据处理等全过程自动控制。

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