| 1. | A new expression of fatigue crack propagation velocity
一种带可靠性的疲劳裂纹扩展速率表达式 |
| 2. | Fatigue crack propagation in partially high percentage fiber reinforced concrete
局部高密度钢纤维混凝土疲劳裂纹扩展实验研究 |
| 3. | Lefm plastics - determination of tension - tension fatigue crack propagation - linear elastic fracture mechanics approach
塑料.测定拉伸-拉伸疲劳断裂延伸性.线性弹力断裂机械 |
| 4. | The fining grains of al - l % si could accelerate the fatigue crack propagation from the near threshold zone to paris zone
随着疲劳裂纹扩展速率从近门槛值区向paris区过渡，细小的a ( a1 )晶粒会加速疲劳裂纹的扩展。 |
| 5. | Abstract : the process of thermal fatigue crack propagation on the surface of steel bonded carbide gjw35 under the action of thermal stress has been observed
文摘:观察了在热应力作用下gjw35钢结硬质合金表面热疲劳裂纹扩展过程。 |
| 6. | Test results showed that the fatigue crack propagation rare increased with increasing the pre - tension deformation degree , especially at the near threshold section
结果表明：随著预拉伸变形量的增加，疲劳裂纹扩展速率提高，尤其是在裂纹扩展的近门槛区。 |
| 7. | During the course of the fatigue crack propagation , there lies crack - closing effect in both two alloys and the main crack - closing mechanic is plasticity - induced one
裂纹扩展过程当中，两种合金均存在着裂纹闭合效应；塑性诱发的裂纹闭合是镁合金的主要裂纹闭合机制。 |
| 8. | In the present study , experimental investigations were carried out on the fatigue crack propagation characteristics of x60 pipeline steel after different degrees of pre - tension deformation ( 5 % , 10 % , 15 % )
摘要用单边裂纹试样，研究了x60管线钢经预拉伸变形量为5 % 、 10 %和15 %后的疲劳裂纹扩展特性。 |
| 9. | According to the observed results near the fracture surfaces , the orientations of the fatigue crack initiation and propagation were investigated to study the mechanism of multiaxial fatigue crack propagation
根据薄壁管拉扭复合载试件断口附近表面观测结果，统计其裂纹扩展的位向，研究多轴疲劳裂纹萌生及扩展机理。 |
| 10. | Studying the rule of geometric shape of surface crack during propagation by means of fracture mechanics theory , a predicting method of fatigue crack propagation life and it ' s numerical calculation theory are presented
本文应用断裂力学理论，对焊接钢结构表面裂纹扩展过程中裂纹几何形状的变化规律进行了探讨，提出了疲劳裂纹扩展寿命的预测方法，给出了相应的数值计算理论。 |
