抗疲劳强度

结论：牙周愈合方式和粘结面积对纵折牙粘结面的抗疲劳强度有影响，牙周膜愈合者抗疲劳强度要高于骨粘连者。

CONCLUSION : Periodontal healing modes could affect fatigue resistance of vertical fractured teeth after bonding restoration .

目的：比较再植后两种牙周愈合方式下，纵折牙粘结修复后的抗疲劳强度。

OBJECTIVE : To compare the fatigue resistance of vertical fractured teeth after bonding restoration in two different periodontal healing modes .

AAAC-400导线的拉重比达11.67km，一般可用于1000m左右大跨越线路上，且具有较高的抗疲劳强度。

AAAC-400 conductor has the tension-weight ratio of 11.67 km , which is normally used for large cross line at about 1 000 m , being of higher anti-fatigue strength .

未锁定之带锁钢板和非锁定钢板的抗疲劳强度较各自的即刻固定强度显著减弱。

After fatigue testing , the strength of all unlocked constructs decreased significantly .

提高机械零件抗疲劳强度的措施

Measures on improving the fatigue strength of machine components

最后一部分，提出了残余应力在提高抗疲劳强度方面的作用。

The last part shows the effect of residual stress on fatigue behaviour .

直流镀镍层的引线随厚度的增加，抗疲劳强度呈直线下降。

The lead fatigue strength is decreased linearly with the increase in nickel coating thickness .

不同材质桩核修复漏斗状残根的抗疲劳强度

Resistance to cyclic fatigue of pulpless teeth with flared root canals restored with different post-and-core materials

测定其即刻固定强度、抗疲劳强度和钢板螺钉的抗拉出强度。

The fixation strength and pull off strength of the screw plate constructs were performed initially and after fatigue .

不同粘结剂对桩核冠修复后牙体组织抗疲劳强度影响的实验研究

An in vitro study of different cements ' influence to the fatigue strength of pulpless teeth restored with post-and-core crowns

目的：比较带锁与非带锁颈椎前路钢板螺钉系统的即刻固定和抗疲劳强度。

Objective : To compare the fixation strength of locking and non locking anterior cervical plating initially and after fatigue .

其端部斜面焊缝结构的抗疲劳强度比对接焊缝结构高，且不会发生一次性脆性破坏；

The fatigue resistance of the scarf weld in the end of the vessel is stronger than that of the butt weld .

通过对油管的受力分析，校核偏磨油管的抗拉强度和抗疲劳强度。

By analyzing the force applied on the tubing , the tensile strength and anti - fatigue strength of the tubing are calibrated .

讨论了稀土元素对铝基轴承材料的机械性能、耐磨性能、抗疲劳强度及金相组织的影响。

Influences of rare earths on mechanical properties , resistance to wear , fatigue strength and metal structure of the bearing alloy are discussed .

这样，用传统方法生产的轴瓦已不能满足上述抗疲劳强度和耐磨性要求。

The bearings made in traditional way cannot satisfy the demands , and even the best thin slots bearing cannot meet above demands of fatigue strength and wearability .

作为风力发电机叶片材料性能中最重要的还是材料必须具有高的抗疲劳强度性能，其次很重要的一点是作为风力发电机叶片的材料，还必须具有原材料来源广泛、价格低廉的优势才行。

The fatigue properties of materials must be superior as well . It is also important that the materials used must be widely available with a low cost .

分析了喷油煤浆泵柱塞弹簧的疲劳断裂原因，建立了其抗疲劳强度的数学模型，并根据喷油煤浆泵柱塞的工作特点和材料性能，提出了一种新的柱塞弹簧的可靠性设计方法。

The causes of fatigue fracture in the plunger spring of coal oil slurry pump are analyzed , and a mathematics model of anti-fatigue strength for the plunger spring is established .

结论：采用真空搅拌骨水泥的方法，提高了国产骨水泥的抗疲劳强度及静态抗弯曲强度，在临床应用有较大的积极意义。

Conclusion : The values of fatigue strength and bending strength of the bone cement were improved by vacuum mixing . The method of vacuum mixing has an active significance in clinic .

从生产角度，提出了重新确定机组调峰起点、提高机组工作部件抗疲劳强度等解决问题的基本方法；

From the viewpoint of practical production , this paper brings forward some basic methods to reconfirm the initial point of peak load modulation , to improve units ' fatigue resistance and so on .

随着飞机制造行业对零件的要求越来越高，在国际国内有关标准中规定，高强度螺栓的螺栓头下圆角部位须采取冷滚压工艺，以大幅度地提高螺栓的抗疲劳强度。

Cold rolling process should be taken in the first round next sites of high strength bolts in international and Chinese standards to greatly improve anti-fatigue strength , with increasingly high demands of the aircraft manufacturing industry .

由温塑性成形工艺来生产铁路重载货车轴承滚动体，有利于提高零件的抗疲劳强度和生产效率，除低原材料消耗。

In order to improve the fatigue strength resistance and production efficiency , also reduce the consumption of the raw material , we usually adopt the warm forming process to produce the bearing rollers of the heavy wagon train .

多波形电流镀镍层的引线抗疲劳强度所允许的镀层厚度比直流镀层成倍增加，从而提高了外壳的抗腐蚀性能。

For a given limited lead fatigue strength value , the permited thickness of nickel coating of multiwave current plating is about one time larger than that of direct current plating , and the corrosion resistence is greatly improved .

压力机轴断裂因素分析及提高抗冲击疲劳强度的方法

The factors analysis of the hydro-extractor shaft crack and the method of increasing the shaft resistance to shock fatigue strength

在疲劳试验的基础上，对上下层布式钢纤维混凝土的抗折疲劳强度进行了研究，得到了上下层布式钢纤维混凝土的抗折疲劳方程。

Based on fatigue tests , this paper studies the flexural fatigue strength of layer steel fiber reinforced concrete , and gives the flexural fatigue equation .

医用金属材料具有强度高，韧性好及抗弯曲疲劳强度高，易于加工成型等优良特点，并在生物骨组织替换中表现出良好的力学性能。

Medical metal materials with high strength , good toughness and high resistance to bending fatigue strength , easy processing molding and other fine features , and showed good mechanical properties in the replacement of biological bone tissue .

借助混凝土疲劳强度史密斯设计图，同时考虑不均匀沉降与温度荷载的影响，基于轨道板抗弯疲劳强度提出了最不利情况下高铁路基中长波不均匀沉降的控制准则。

In the end , considering the effect of uneven settlement and temperature load , the medium-long wave uneven settlement of subgrade is controlled based on fatigue strength of slab with the help of the Smith design drawing of concrete fatigue strength .

并指出，提高材料抗多冲疲劳的强度将是减少钎头断裤率，延长其使用寿命的有效途径。

It should be pointed out that upgrading the strength of materials to resist multi-shock fatigue is an effective approach to reduce the socket-breakage rate as well as to improve bit 's service life .

结果：应用真空搅拌处理，抗弯曲强度和抗疲劳强度分别提高了13%和15%，骨水泥的静态压力耐受强度稍降低，弹性模量稍提高，二者在统计学上无变化。

Result : When using vacuum mixing technique , fatigue strength and bending strength were significantly improved by 15 % and 13 % respectively . With vacuum mixing neither the static compression strength of this bone cement nor the E-modules of bending improved statistically significant .

由于中锡铝合金具有较好的抗咬合性、顺应性和嵌藏性，其承载能力与抗疲劳强度高于高锡铝合金，同时也可以节约贵重有色金属Sn，使该合金价格上具有竞争力。

Aluminum alloy with mid-tin has better anti-bite , and compliance and embedded possession , and its carrying capacity and anti-fatigue strength is higher than the high-tin aluminum alloy , and also can save valuable non-ferrous metals Sn , as a result of a competitive price .