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endurance crack
相关语句
  疲劳裂缝
     Combined up-to-date code with latest achievement in scientific research,the author deduces the relationships among the extending life of endurance crack,cycle index of endurance load and stress of tendon by using definite integral theory in high mathematics,in order to confirm the theoretical relationships among several important parameters when the member is being damaged.
     将最新规范规定与最新科研成果相结合,运用高等数学中定积分的理论,推导出疲劳裂缝扩展寿命与疲劳荷载循环次数及此时预应力筋应力之间的关系,从而确定构件破坏时几个重要参数之间的理论关系。
短句来源
  疲劳裂纹
     Using ultrasonic to inspect endurance crack in collar thread
     钻铤螺纹疲劳裂纹的超声波检测
短句来源
     The substance and method of the experimental research on the power set revolving wheel prototype of Yantan Power Station is introduced. The result shows that the main reason of the endurance crack is more higher residual stress and dynamic stress in the vanes of revolving wheel.
     介绍岩滩机组转轮原型试验的研究内容和方法.研究表明岩滩机组转轮叶片存在较大的残余应力和动应力,是使转轮叶片产生疲劳裂纹的主要原因.
短句来源
     The endurance crack is apt to be produced in collar thread during drilling, which eventually results in the connection failure.
     在钻井过程中,钻铤螺纹容易产生疲劳裂纹,最终导致连接失效。
短句来源
  “endurance crack”译为未确定词的双语例句
     THE PROBABILITY RESEARCH OF THE EXTENDING LAW OF THE ENDURANCE CRACK FOR SUCKER ROD MATERIAL
     抽油杆材料疲劳裂纹扩展规律的概率研究
短句来源
  相似匹配句对
     Crack of reinforced structure and its endurance
     钢筋砼结构的裂缝与耐久性
短句来源
     Using ultrasonic to inspect endurance crack in collar thread
     钻铤螺纹疲劳裂纹的超声波检测
短句来源
     Out of the Crack
     走出夹缝
短句来源
     On Endurance Developement
     发展耐力素质初探
短句来源
     The crack was transgranular.
     裂纹呈穿晶扩展 .
短句来源
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In this paper, the extending law of the endurance crack approaching threshold hasbeen researched experimentally, and meanwhile the probability analysis has been accom-plished. We think that, in Paris formula, c obeys log-normal distribution, n and thecrack depth a obey normal distribution, the circulating time N obeys log-normal distri-bution. The point estimation and interval estimation of the quantities related to residuallifetime have been solved.

本文对抽油杆材料20CrMo钢近门槛区疲劳裂纹的扩展规律进行了实验研究。同时进行了概率分析。认为Paris公式中的c服从对数正态分布,n服从正态分布,裂纹深度a原从正态分布,循环次数N服从对数正态分布,并求出了与剩余寿命有关量的点估计和区间估计。

The substance and method of the experimental research on the power set revolving wheel prototype of Yantan Power Station is introduced.The result shows that the main reason of the endurance crack is more higher residual stress and dynamic stress in the vanes of revolving wheel.

介绍岩滩机组转轮原型试验的研究内容和方法.研究表明岩滩机组转轮叶片存在较大的残余应力和动应力,是使转轮叶片产生疲劳裂纹的主要原因.

The article presents the welding process and makes an economical analysis about how to repair the main roller of plate bending of rolling large machine. One effective method is found very useful for same type of large roller or shaft. The article focuses on the aspects as follows: the analysis for reasons of endurance crack, the chemical composition analysis of roller material, the selection of base metal and electrodes for repairing, the determination of welding parameters, the pre heat and post heat...

The article presents the welding process and makes an economical analysis about how to repair the main roller of plate bending of rolling large machine. One effective method is found very useful for same type of large roller or shaft. The article focuses on the aspects as follows: the analysis for reasons of endurance crack, the chemical composition analysis of roller material, the selection of base metal and electrodes for repairing, the determination of welding parameters, the pre heat and post heat treatment after welding, the ultrasonic check and check by other method, the economical assessment of welding repair. The plate bending of rolling large machine has been used for about five months after welding repair. There is no any new crack found on the weld up to now. The welding repair method is available.

介绍了大型卷板机主动辊断裂后修复的技术过程及经济性分析 ,疲劳裂纹形成的原因 ;辊子材料材质的化学分析 ;补焊材料材质的确定 ;焊接材料的选择 ;合理的焊接工艺参数的确定 ;焊前预热及焊后热处理方法 ;焊后超声波检查及其它检验方法 ;焊接修复的经济性分析 .修复后的卷板机已正常运行 ,经超声波检验复查 ,焊缝处无裂纹产生 ,此种焊接修复方法是可行的 .

 
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