英语释义

• a crack in metal resulting from metal fatigue

片语

fatigue small crack疲劳小裂纹

fatigue-crack propagation疲劳裂纹扩展

fatigue growth crack疲劳扩展裂纹

Fatigue and Crack Propagation疲劳和裂纹扩展

fatigue micro crack疲劳微裂纹

fatigue long crack疲劳长裂纹

fatigue e crack疲劳裂缝

fatigue short crack疲劳短裂纹

英汉例句

• the results show that metallurgical defect is the main reason leading to early formation of fatigue crack under normal working stress.

  认为，该曲轴材料的冶金缺陷是导致疲劳裂纹在正常工作应力下过早形成的原因。

• the pre-straining prolonged the fatigue crack initiation life, and increased resistance coefficient and equivalent stress threshold of the fatigue crack initiation.

  预应变可以延长疲劳裂纹形成寿命，提高疲劳裂纹形成的抗力系数和裂纹形成的当量应力门槛值；

• investigation of fatigue crack initiation and propagation has been carried out on smooth plate specimens of a nickel base cast superalloy treated by hip.

  本文对铸造镍基高温合金光滑板试样（经过热等静压处理）疲劳裂纹的形成与扩展进行了研究。

• 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。

• a distribution function of two dimensional threshold is given for fatigue crack propagation.

  本文给出二维疲劳裂纹扩展门槛值分布函数，建立二维应力—门槛值干涉模型。

• and formation of typical fatigue striation on fatigue crack steady propagation is difficult.

  其疲劳裂纹的稳定扩展也较难形成典型的疲劳条带。

• the sampled data, sampled waveform and graph can be real time displayed, so that a supervision for the status of surface fatigue crack growing can be accomplished.

  通过监测系统软件设计，实现对采样数据、波形和图形进行实时屏幕显示，对表面疲劳裂纹扩展进行动态监视。

• on constant frequency ratio, loading ratio has an importance influence on the initiation and propagation of fatigue crack under double frequency complex loading.

  在频率比确定的条件下，载荷比是影响双频疲劳裂纹萌生及扩展的一个重要因素。

• finally, it synthesizes the main factors which affect the fatigue crack of the tooth surface extension and form pitting under ehl conditions.

  最后，综合了在弹性流体动力润滑条件下影响齿面疲劳裂纹扩展形成点蚀的主要因素。

• to predict the fatigue crack growth life of welded equipments at elevated temperature, a group of novel fatigue crack growth equations was proposed.

  为了预测焊接构件在中温环境下的疲劳裂纹扩展寿命，提出了一组新的疲劳裂纹扩展方程。

• the researches of fatigue crack propagation based on dissipated energy density are more significative.

  本文提出了以耗散能密度作为参数来描述疲劳裂纹扩展。

• corrosion pitting also can lead to fatigue crack initiation depending on the component, the location of pitting, and cyclic loading conditions.

  腐蚀斑点还会因不同的部件、斑点的位置和循环载荷状况，导致一些不同的疲劳裂纹。

• 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。

• we also make tentative researches for fatigue fracture and for the effect of secondary crack on fatigue crack growth.

  本文还在疲劳断口的研究方面进行了新的尝试，探讨了二次裂纹对疲劳裂纹扩展的影响。

• the compliance method based on the crack opening displacement parameters was used to calculate the fatigue crack length, and the fatigue crack growth rate.

  采用柔度法通过试件缺口张开位移计算出裂纹长度，以确定疲劳裂纹扩展速率。

• fatigue crack growth in a structure has become a concern to the prolonging of its lifetime.

  疲劳裂纹的生长已成为构件延寿工作关注的焦点。

• the relation of law of the fatigue crack extending and feature of macro-profile is discovered, which provides a new method for the life estimation of the brake disc.

  发现裂纹剖面宏观形貌特征与制动盘疲劳裂纹扩展规律之间存在一定的关联，为制动盘寿命评估提供了新的思路。

• the type of thermal fatigue crack propagation is mixed propagation.

  合金热疲劳裂纹的扩展方式为混合扩展。

• making fatigue crack with straight front is a difficult key problem during ctod test of welds in metallic thick plank.

  在金属厚板焊缝ctod试样中预制前沿平直的疲劳裂纹，是ctod试验的一个关键难题。

• we get valuable results about the effect of the stress ratio and residual stress on fatigue crack growth.

  在应力比，残余应力对疲劳裂纹扩展的影响方面获得了有价值的成果。

• the results show that the fatigue crack not only decreases the natural frequency, but also causes non linear vibration.

  计算结果表明，疲劳裂纹不仅使悬臂梁的固有频率下降，而且引起非线性强迫振动响应。

• 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。

• experimental and analytical studies of effect of specimen thickness on fatigue crack growth behavior were carried out in domestic 2024 t351 aluminum alloy.

  进行了国产2024-t351铝合金在单峰过载条件下试样厚度对疲劳裂纹扩展性能影响的试验和分析研究。

• 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；

• fracture lines start from the outside and spread over the whole cross section, particularly starting in the fillet area and very often after a fatigue crack propagation.

  断裂面从轴承部位外部开始延伸到整个截面。典型的是从圆弧部开始，常常会由于疲劳而产生的裂纹的扩展后引起的。