If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.
如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。
Fracture mechanics is adopted to estimate the fatigue life of structural members, and among the rest, crack growth rate formula is studied.
本文采用断裂力学方法来估算结构构件的疲劳寿命，这其中主要围绕裂纹扩展速率表达式展开研究。
The technique of measurement of growth, rate of fatigue short crack with indirect KC (IDC) potential system and AC potential system was investigated.
木文研究了间接直流电位法（IDC法）和交流电位法（AC法）用于监测疲劳短裂纹扩展速率的有关技术问题。
It is shown that a regular pattern distribution of scattered alloying zones which surrounded by phase transformation zone can retard the fatigue crack growth rate and improve the fatigue life.
研究表明，大量规则分布、互不重叠的合金化区及其周围的相变硬化区从总体上降低了疲劳裂纹扩展速率，提高了材料的疲劳寿命。
Stay up late, emotional instability, eye fatigue, aging, venous blood flow rate is too slow, the skin red.
熬夜，热忱没有波动，眼部疲累、朽迈，静脉血管血流速率过于渐渐，眼部皮肤黑。
Losding effect consists of rate effect and fatigue effect.
荷载效应包括速率效应和疲劳效应两部分。
The results show that the crack growth rate under high-low cycle complex fatigue load is greater than that under low cycle fatigue load, and so the fatigue life is obviously reduced.
结果表明：与纯低周载荷作用相比，高低周复合载荷下球墨铸铁的裂纹扩展速率明显加快，极大地降低材料的疲劳寿命。
By analyzing operator's fatigue states under different working posture on assembly line, studys the fatigue threshold and working time rate of standing posture, sitting posture and alternate posture.
通过对流水线上操作人员在不同作业姿势下的疲劳分析，研究站姿、坐姿和站、坐交替三种姿势的疲劳时间阈值和劳动时间率。
The fatigue crack closure and fatigue crack growth rate in the high strain region of SCT specimen are studied.
本文研究了SCT试样高应变区的疲劳裂纹闭合效应和疲劳裂纹扩展速率。
The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation (FCP) theory.
疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。
A small sample method for testing fatigue crack growth rate curve of steel was presented in this paper using a formula of two-dimensional one-side tolerance factor.
应用二维单侧容限系数公式，提出了一种测定金属材料疲劳裂纹扩展速率的小样本方法。
The mechanical properties of the butt welded joints have been evaluated according to the impulsive and fracture toughness as well as the rate and threshold values of fatigue crack propagation.
根据试验测定的焊缝各区冲击韧性、断裂韧性、疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，对焊缝力学性能作出综合评价。
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.
疲劳寿命的计算采用断裂力学方法，建立疲劳裂纹扩展模型和失效模式的极限状态方程。
Under 4% strain, the number of repeat tensile fatigue rupture is 38560 cycles and the recovery rate keeps up 100%.
在4%的固定应变下，反复拉伸疲劳断裂次数高达38560次，形状回复率为100%。
For CH joint, when the initial crack is located in hard zone, the closer the initial crack is to the hard soft interface, the slower the fatigue crack growth rate is.
起始裂纹在硬区的软对硬力学性能非对称焊接接头，起始裂纹越靠近软区，疲劳裂纹扩展速率越慢；
The flaking do increases and undulates the fatigue crack growth rate.
钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。
The analysis on all aspects showed that the mechanics property of the corroded reinforcement concrete beams was affected by main bar corrosion rate and the number of fatigue circles.
综合分析表明，主筋锈蚀率和疲劳循环次数影响钢筋混凝土梁的静力力学性能。
The results proved that there was close relationship between the restoration of heart rate and dynamic heart rate and the intensity of physical fatigue.
证明在体力劳动中，心率恢复期和动态心率与体力疲劳程度之间存在着密切的联系。
The fatigue crack propagation rate of the fusion line and weld toe are greater than that of the others.
熔合线和焊趾处疲劳裂纹扩展速率较其他部位大。
Product is non-fluorescent brighteners, reflecting the low rate, suitable for reading, should not cause visual fatigue and injury.
产品不含荧光增白剂，反射率低，适宜阅读，不宜造成视觉疲劳及伤害。
The studies were carried out of the test of fatigue crack growth rate and relative to the microscopic morphology of fracture surface in certain high-strength steels.
本文用宏观和微观方法测量了几种高强度钢的疲劳裂纹扩展速率，用金相和断口复型法观察了疲劳断口的微观形态以及与显微组织的关系。
The heart rate of NEWHOLLAND M160 tractor driver during the wheat cutting and sunning operation were tested and analyzed for understanding the fatigue conditions.
为了解麦收作业拖拉机驾驶员的疲劳状况，对割晒作业过程中NEWHOLLANDM160型拖拉机驾驶员的心率进行了测试与分析。
The fatigue crack propagation rate (FCPR) of as-rolled AM60 in the longitudinal direction is higher than that of the transverse direction.
轧制AM60的横向疲劳裂纹扩展速度（FCPR）明显地高于纵向。
The relation between laser texturing overlaid rate and 18-8 stainless steel fatigue life was analyzed by numerical simulation and related experiments.
通过模拟分析，对激光毛化18 8不锈钢的疲劳寿命与毛化覆盖率的关系进行研究，预测结果与相关实验结果进行对比。
On the basis of this, an automatic measurement technique of fatigue crack length in fatigue crack growth rate test under corrosive circumstance is established.
在此基础上，建立了腐蚀环境下疲劳裂纹扩展速率试验中裂纹长度的自动检测技术。
Finally, this study analysised the asphalt mixture fatigue damage evolution process of stress control mode and established a relationship between unit load fatigue damage rate and the fatigue life.
最后，本研究分析了应力控制模式下沥青混合料疲劳试验过程中的损伤演化规律，建立了单位加载疲劳损伤率与疲劳寿命之间的关系式。
Utilization rate of oxygen and stack of metabolite when exercise can affect motor capacity, and related with the exercise fatigue.
运动时氧利用率及代谢产物的堆积可能影响运动能力，并且与运动疲劳相关。
Study of fatigue crack growth rate and fatigue life calculation under random loading is very important for the reliable life prediction of engineering structures.
变化载荷作用下裂纹扩展律和疲劳寿命的计算对工程结构的寿命的可靠预测是十分重要的。
Study of fatigue crack growth rate and fatigue life calculation under random loading is very important for the reliable life prediction of engineering structures.
变化载荷作用下裂纹扩展律和疲劳寿命的计算对工程结构的寿命的可靠预测是十分重要的。
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