How to accurately determine the line pipe anti-crack toughness value is the key of this problem.
如何正确合理地确定管材止裂韧性数值是这一问题的关键。
Causes the steel to produce the hot brittleness, reduces the steel the ductility and the toughness, when forging and rolling crack.
使钢产生热脆性，降低钢的延展性和韧性，在锻造和轧制时形成裂纹。
Besides , it's feasible to crack mend when distortion is requested to use the right amount of 660 diluter which can increase toughness of the serosity .
此外，添加适量的660稀释剂能增加环氧树脂灌浆材料的韧性，这在对裂缝有少量变形要求的修补时特别有利；
From the view point of material selection, we analyzed their dynamic fracture toughness and crack propagation resistance.
从选材角度对比分析了几种铝合金的动态断裂韧性及裂纹扩展阻力。
The crack will deflect because the weak layer exits, which will absorb more amounts of fracture work and improve the crack tolerance greatly, therefore the fracture toughness increases remarkably.
这是由于弱间层的存在将出现裂纹偏转现象，吸收大量的断裂功，从而大幅度提高了裂纹的扩展容限，使断裂韧性有较大增长。
The fatigue life in different initial crack sizes and different fracture toughness was compared, and an example was given.
还比较了不同初始裂纹尺寸和断裂韧性对疲劳寿命的影响，并给出了算例。
By comparing fatigue crack with electrosparking crack, the effects of crack tip on fracture toughness of ductile iron have been studied.
通过开疲劳裂纹和线切割裂纹的对比试验，研究裂纹尖端的尖锐程度对球墨铸铁断裂韧性的影响；
To analyze the characteristics of TBCs such as residual stress, bond strength, fracture toughness, and crack propagation ratio, the Young's modulus and Poisson's ratio are important parameters.
为确定热障涂层的残余应力、结合力、断裂韧性、疲劳裂纹扩展速率等性能和特性，需要知道其杨氏模量和泊松比。
Based on the fractal characteristic of concrete material, the relation between fracture toughness and height of crack zone is analyzed.
根据混凝土材料裂纹的分形特性，分析了混凝土的断裂韧度与裂纹带高度之间的变化关系。
The impact toughness, crack forming energy and crack extension energy of complex modified medium manganese austenitic steel. Are increased by 263%? 288% and 232% respectively.
复合变质中锰奥氏体钢的冲击韧度、裂纹形成功和裂纹扩展功分别比原来提高了263%、288%和232%。
Within the range of test temperature, the factors controlling the toughness are fracture loads, the lengths of fibrous crack, and the energy absorbed by each fibrous crack extension.
在试验温度区内，控制韧性的因素是断裂载荷、纤维裂纹长度和单位纤维裂纹扩展能量。
It is also found that the linear elastic fracture toughness criteria are applicable to the crack evaluation of concrete structures.
这表明线弹性断裂韧度准则可应用于混凝土结构的裂缝评定。
The flexural strength, first crack strength, modulus of elasticity and flexural toughness of high-strength lightweight fiber-reinforced concrete were investigated.
对轻骨料高强度钢纤维混凝土的抗压强度、初裂强度、弯曲强度、弹性模量和弯曲韧性指数等主要力学指标进行了试验研究。
The dynamic plastic fracture toughness CTOD and its variation with different. crack propagation speeds.
塑性动态断裂韧性CTOD，及其在不同裂纹扩展速度下变化规律的测试。
Compared with common manganese steel, it's strength and toughness was apparently enhanced. Heat crack was hindered or eliminated and anti-abrasive property was enhanced obviously.
与普通高锰钢相比，强韧性有了显著提高，热裂现象在很大程度上得以消除，抗磨性能大大增强。
The initiation time of crack is measured by strain gauge on the sample. The fracture toughness of the composite material is determined by FEM numerical simulation.
使用应变片方法确定了裂纹的起裂时间，结合有限元数值模拟得到了裂纹的起裂韧性；
Effects of mechanical heterogeneity on fracture toughness and crack deviation Angle of the joints were investigated by experiment.
通过试验研究了力学不均匀性对接头断裂韧性和裂纹开裂角的影响。
The equiaxed structure has good tensile property, low fracture toughness and high fatigue crack propagation rate.
等轴组织具有较好的拉伸性能、低的断裂韧性和高的疲劳裂纹扩展速率；
The results show that addition of small amounts of Mg can not only notably increase the creep crack growth life but also increase creep toughness.
结果表明：加入微量镁，不仅能延长合金的蠕变裂纹形成寿命，而且能提高合金的蠕变韧性。
The surface crack fracture toughness KIe of D406A steel were tested.
测定了D406A钢表面裂纹断裂韧度。
Based on testing results, the relationship between velocity of granite subcritical crack growth and stress intensity factor, and the fracture toughness are obtained respectively.
根据试验结果，得到了花岗岩亚临界裂纹扩展速度与应力强度因子之间的关系和花岗岩的断裂韧度。
It has excellent impact toughness on gap and crack resistance. It's used for welding key structure such as pressure containers, drop pipes of hydroelectric station, Bridges, ocean projects, etc.
有良好的低温冲击韧性和抗裂性能，焊接压力容器、水电站下降管、桥梁、海洋工程等重要结构。
The shallow surface crack fracture toughness was tested, and the fracture toughness probability distribution between the deep and shallow surface cracks was compared.
测试了浅表面裂纹的断裂韧度，比较了深、浅表面裂纹的断裂韧度概率分布。
It is concluded that the W-type specimen is reasonable and feasible the measurement of fracture toughness in the commonly used length range of initial crack and rabbin.
研究表明，在常用的裂纹长度和韧带长度范围内，W型试样在断裂韧度的测量中是合理而可行的。
It has excellent mould, toughness and crack resistance, use for welding key structure, such as pressure containers, ships and ocean projects, etc.
具有优良的塑性、韧性和抗裂性能，焊接压力容器、船舶、海洋工程等重要结构。
After fiber is mixed into Dry-mixed mortar, toughness, crack resistance of mortar will be improved, and dry shrinkage of mortar has reduced.
在砂浆中加入聚丙烯纤维，可以改善砂浆的韧性，提高砂浆的抗裂性，减小收缩。
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。
The results show that considering the effect of fracture toughness increment and retardation of crack of anchorage, better effect of anchorage is reflected in numerical fracture and damage simulation.
计算结果表明：在断裂损伤数值计算中考虑锚杆对裂隙的增韧止裂作用可以更好地反映锚杆的加固效果。
The results show that considering the effect of fracture toughness increment and retardation of crack of anchorage, better effect of anchorage is reflected in numerical fracture and damage simulation.
计算结果表明：在断裂损伤数值计算中考虑锚杆对裂隙的增韧止裂作用可以更好地反映锚杆的加固效果。
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