疲劳强度

But under the real working conditions where exist alternating load sequence, no paper mentions whether can LAL still increase fatigue strength so far.

但在实际使用载荷忽高忽低交替作用的条件下，低幅载荷是否也能增大疲劳强度，迄今尚未有文献论述。

Implants are made out of biomedical materials. Other than the mechanical properties, it is required that the implant has low elastic coefficient, low density, high corrosion resistance and fatigue strength.

中文摘要医学材料制成的体内植入物件除了必须具有良好的机械性质，低弹性系数、低密度、好的抗腐蚀性和疲劳强度。

Area method and stress field intensity approach to estimate the fatigue strength of welded steel structures are presented in the paper.

本文分别建立了焊接钢结构疲劳强度预测的面积法和应力场强法的理论。

This paper introduces the fatigue strength test of welded joints of 16MnR, 15MnVN and 18MnMoNb steels under small energy lash of heaps of times .

介绍了 16MnR、15MnVN及 18MnMoNb三种钢焊接接头及母材在小能量多次冲击条件下的疲劳强度试验情况。

Shot peening and rolling are the well-known methods that can increase the fatigue limit of Titanium and its alloys, however, the invigoration effect is limit.

喷丸和滚压是公认的提高钛及其合金疲劳强度有效的方法，但其强化效果都不太明显。

Safety life of crane was determined by its fatigue intensity of metal structure.

起重机的安全寿命取决于其金属结构的疲劳强度。

We find that the proportion of the contribution of the three factors on the fatigue strength improvement of the peened joints depends on the base metal static strength.

结果表明：超声冲击处理提高焊接接头疲劳强度的硬化，改善焊趾几何外形和在焊趾区形成表面压应力三者贡献的大小，与被处理焊接接头的母材静强度有一定的相关性。

Rod of sieve sieve drum strength, high fatigue, sieve Aperture uniform accuracy level of similar foreign products, Aperture uniform, 90% of the gap between the deviation of ± 0.025mm.

棒条筛筛鼓强度大，抗疲劳强度高，筛缝宽均匀，精度达国外同类产品水平，缝宽均匀，90％缝隙偏差在±0.025mm之间。

The alloy boasts good shaping property, high corrosion resistance, weldability and fatigue strength, medium static strength, is used to make airplane oil tank, oil pipe, oil pipe, metal sheet and instrument for vehicle and vessel, street lamp post and riveted wire.

典型用途：此合金有良好的成型加工性能，抗腐蚀性，可焊性，疲劳强度与中等的静态强度，用于制造飞机油箱、管，以及交通车辆、舶的钣金件、表、灯支架等。

The alloy boasts good shaping property, high corrosion resistance, weldability and fatigue strength,medium static strength, is used to make airplane oil tank, oil pipe, oil pipe, metal sheet and instrument for vehicle and vessel,street lamp post and rive

典型用途：此合金有良好的成型加工性能，抗腐蚀性，可焊性，疲劳强度与中等的静态强度，用于制造飞机油箱、油管，以及交通车辆、船舶的钣金件、仪表、街灯支架等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。