查询词典 fatigue curve

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。

For three kinds of materials, a family of equivalent damage curve was measured on various stress levels using toughness degradation fatigue tests by fixing a group of cyclic numbers.

通过固定一组循环数进行不同应力水平加载试验，用韧性耗散法测得三种材料等效损伤线族，它显示了损伤场全貌。

As long as obtain S-N curve, the actual load history and the cumulative damage rule of the submarine pressure hall, the estimate of the fatigue life with pressure hull become possible.

只要取得船体构件材料之S-N曲线、船体构件之实际负荷履历以及疲劳累积损坏率这三方面的评估资料，即可对压力壳的疲劳寿命进行合理预估。

At the end, we discuss its engineering significance to simplyfying fatigue test in order to obtain P-S-N curve of parts.

文中最后讨论了该方法对旨在获得零件P-S-N曲线的疲劳试验的简化作用和工程意义。

This paper presents a curve of influence of vibratory stress relief on fatigue life of welded structures.

通过试验，给出了低应力预处理对金属焊接接头疲劳寿命影响的规律曲线。

The fatigue life of the newly developed drill rod is also predicted according to the S-N curve of drill steel and its theoretical loading spectrum.

同时，结合材料的S-N曲线和钎杆的理论载荷谱，运用电算程序，预估了新型结构钎杆的抗疲劳寿命。

Based on the experiment and theory analysis, we give out the fatigue reliability curve of these two kinds of materials to provide bases for engineering.

通过上述试验研究与理论分析，给出 WH530和WH610D2两种钢材的疲劳性能参数，并给出这两种钢材的疲劳可靠性曲线，为工程应用提供依据。

Relationship curve between the fatigue life and the load level corresponding to the different relative reliabilities was established.

通过试验结果的对比分析，探讨了成组法和升降法的&谐应&关系，提出了实用的高速汽车链的疲劳试验方法。

In this paper the curvature decision method to determine the turning points of fatigue crack growth rate curve has been proposed.

本文提出了确定疲劳裂纹扩展速率曲线转折点的数学方法——曲率判定法。

Adopting the method in this dissertation to obtain S-N curve can reduce fatigue experiments and helpful in gaining economic efficiency.

采用本文方法预测S-N曲线可以大量减少疲劳试验，节省人力、物力和时间。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。