裂纹

The results show that the simplified equations can be used to calculate the weld magnification factor not only for the T-butt joint but also for the butt, cruciform joints.

结果表明作者给出的简化表达式不仅可以用来计算T型接头的焊趾表面裂纹应力强度因子，而且可以用来计算对接与十字接头焊趾表面裂纹的应力强度因子。

The test results show that the relation of fracture strength and cumulative fracture probability and loading rate for specimens in distilled water can be show by the two-index Weibull function.

玻璃构件在制造、加工和使用过程中会产生许多大小、性状和方向均不相同的微裂纹，这些微裂纹是造成材料强度值具有很大分散性的主要原因。

The curve of fatigue crack growth rate is calculated, and the behavior of fatigue crack growth is simulated.

计算了疲劳裂纹扩展速率曲线，模拟了疲劳裂纹的扩展行为。

A method for quickly determining the crack growth curve of offshore steel platform s is presented in the paper.

提出了一种确定海洋平台钢裂纹扩展曲线的快速方法，该方法可以综合利用以往的经验数据和当前试验数据确定表面疲劳裂纹扩展速率曲线。

A small sample method for testing the fatigue crack growth rate curve of pressure vessel steel is presented in this paper.

提出了一种测试压力容器钢疲劳裂纹扩展速率的小样本方法，可以综合利用历史数据和当前试验数据确定疲劳裂纹扩展速率曲线。

In contrast to the experimental report by Cao and Evans, we found that the crack would extend under a cyclic electric field below the coercive field by the in-situ observation through a long focal length optical microscope.

不同于Cao和Evans的实验报道(矫顽电场以下，裂纹不发生扩展)，我们在通过长焦距显微镜实时观测了循环电场的幅值低于矫顽电场时，铁电陶瓷中疲劳裂纹扩展的规律。

Crack propagation leading to decohesion or delamination is one of the major failure.

但在生产与使用过程中膜基界面处容易产生裂纹，裂纹的扩展导致膜层的脱落是使膜层完全失效的主要形式之一。

The integral equation for determining the unknown forces about the problem can be transformed into algebraic equation and solved numerically.

并推导了SH波对夹杂与裂纹散射的定解积分方程组，进而求得裂纹尖端的动应力因子。

Then the integral equation for determining the unknown forces in the problem can be changed into the algebraic one and solved numerically so that crack DSIF can be determined.

其次，推导了圆孔、裂纹对SH波散射的定解积分方程组，进而求得裂纹尖端动应力强度因子。

So we put forward fracture criterion of the deviator strain energy density factor and fracture criterion of the deviator strain energy for the mixed-mode crack propagation, simplifies as criterion and criterion respectively.

作为应用举例，它们成功地预测了复合型裂纹的启裂角和临界荷载，将其与现有的理论结果和实验数据进行比较，其结果是在预测裂纹启裂角方面优于Sih的S准则，而预测的临界荷载偏保守。

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。