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裂纹     
相关语句
  crack
    Dynamic Modeling of Vibration and Analysis on Crack Fault in I.C.E. Crankshafts
    内燃机曲轴动态振动特性模拟及其裂纹故障分析
短句来源
    Investigation on the Fatigue Crack Growth Rate of ZG20CrMoV Steel
    对ZG20CrMoV钢疲劳裂纹扩展速率的研究
短句来源
    The Study of Crack Propagation on The Interaction of Fatigue for Steam Turbine Rotors Steel
    汽轮机转子钢疲劳-蠕变交互作用下的裂纹扩展研究
短句来源
    Improved Measures of Removing Crack on Inside Hole of Malleabl Cast Iron NUT-2 Wire Cleat
    消除NUT-2线夹内孔裂纹的工艺改进措施
短句来源
    EXPERIMENTAL RESEARCH ON CRACK GROWTH BEHAVIOR IN HTPB COMPOSITE PROPELLANT
    国产HTPB复合推进剂裂纹扩展特性的实验研究
短句来源
更多       
  cracks
    The Welding Technique for Repairing Cracks on High Pressure Steam Turbine Casings
    高压汽轮机缸体裂纹补焊技术的研究
短句来源
    Transverse Cracks in Waterwall Tubes of the 935 t/h Subcritical Once-Through Boiler in Yao Meng Power Plant
    姚孟电厂935吨/时亚临界压力直流锅炉水冷壁管横向裂纹起因的分析
短句来源
    An Evaluation of Safety of Electroslag Weldment Cracks on A High-Pressure Boiler Drum
    高压锅炉汽包电渣焊缝裂纹的安全性评定
短句来源
    Diagnosis of Crankshaft Cracks via Measurement of Crankshaft—Flywheel System Torsional Vibration Mode
    通过测量曲轴飞轮系统扭振模态特性诊断曲轴裂纹
短句来源
    Classification and Discrimination for Hardening Cracks in Parts of Engine
    发动机零件淬火裂纹分类辨析
短句来源
更多       
  cracking
    ESTABLISHMENT OF CRITICAL COOLING TIME CRITERION OF WELDING COLD CRACKING
    焊接冷裂纹临界冷却时间判据建立
短句来源
    TEST ON HG2008 BOILER WATER-WALL TRANSVERSE CRACKING
    HG2008锅炉水冷壁管横向裂纹泄漏试验研究
短句来源
    Prevenming Measure Of Deaerator Weld Cracking
    除氧器水箱焊缝裂纹防止措施
短句来源
    Mechanism of Transverse Cracking Failure in Boiler Water Wall
    锅炉水冷壁横向裂纹失效机理分析
短句来源
    Cause Analysis and Handing Meaures of Cracking Leakage on Water Wall Tubes of 1021t/h Boiler
    1021t/h锅炉水冷壁管裂纹泄漏原因分析及处理措施
短句来源
更多       
  blade crack
    Study of the hydraulic turbine blade crack examination system based on acoustic emission technology
    基于声发射技术的水轮机裂纹检测系统研究
短句来源
    Aiming at effective on line monitoring of blade crack fault, we studied the natural frequency and forced vibration of a cracked cantilever beam (Fig.1).
    以带疲劳裂纹悬臂梁为例研究疲劳裂纹对叶片固有频率及强迫振动响应的影响。
短句来源

 

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      crack
    The relationship between medial crack length and normal loading was also investigated when specimens were indented by symmetrical wedges with interior angles of 30°-120°.
          
    Crack fault quantitative diagnosis based on finite element of B-spline wavelet on the interval
          
    The model-based forward and inverse problems in the diagnosis of structural crack faults were studied.
          
    The forward problem is to solve the natural frequencies through a cracked structural model and the inverse problem is to quantitatively determine the crack parameters using the experimental testing frequencies.
          
    Then, the one-dimensional crack element of B-spline wavelet on the interval (BSWI) was built to solve the forward problem.
          
    更多          
      cracks
    Plane elastic problems of different media with cracks on the interface
          
    The equilibrium problem for the infinite elastic plane consisting of two different media with many cracks on the interface is discussed.
          
    Low pit aspiration ratio and cracks of some bordered pits are the main reasons for the increase in liquid penetration after RFVD treatment.
          
    Initiation and propagation laws of the glass cracks in specimens subjected to normal loading under the action of symmetric wedge
          
    To improve the machining precision of part surfaces and to facilitate tool design and cutting parameter selection, the initiation and propagation laws of glass cracks in specimens subjected to normal loading by symmetric wedges were investigated.
          
    更多          
      cracking
    In addition, thermal cracking, thermal oxidization, carbonization and cyclization of organic substances on the surface of brake block can make the friction surface produce pores or cracks, thus fatigue wear occurs.
          
    Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
          
    Formation of coke in thermal cracking of jet fuel under supercritical conditions
          
    Continuous-flow reactor experiments were carried out to study coke formation from thermal cracking of home-made jet fuel RP-3 under supercritical conditions.
          
    The starting cracking temperature of RP-3 fuel was determined to be 471.8°C by differential scanning calorimetry (DSC).
          
    更多          
      其他


    This paper atudles two lmpartaut proLlems in the’epaitiug of the cracks on high presauare ateam turbine casings by means of electric are welding,namuly,the preheating of the workiece before welding and the aubsequent heat treatment,and also introduces the correspunding methods adopted:(1)Using induction heating method to bring the temperature of the work piece to the desired vaules without producing residual deformation,(2)By measn of follow-up tempering on the welded beade,not only to keep the mechanieal properties...

    This paper atudles two lmpartaut proLlems in the’epaitiug of the cracks on high presauare ateam turbine casings by means of electric are welding,namuly,the preheating of the workiece before welding and the aubsequent heat treatment,and also introduces the correspunding methods adopted:(1)Using induction heating method to bring the temperature of the work piece to the desired vaules without producing residual deformation,(2)By measn of follow-up tempering on the welded beade,not only to keep the mechanieal properties of the weld metal and the residual stresses prtationally the same as theat caused by the couventional heat treatment method,but also not th increase the deformation

    本文对高压汽轮机汽缸裂纹补焊技术中存在的两个主要问题——预热和热处理问题,分别提出了现实可行的方法,即: 1.无变形工频感应预热的方法。用这种方法在预热温度范围内加热,可以使经过精加工的汽缸不产生残余变形。 2.跟踪回火的方法。用这种方法处理每一焊道,不但可以使补焊区的金属性能和残余应力与一般回火处理基本相同,而且不致因回火处理而增大工件的变形量。

    This paper presents an analysis of some examples of damages to marine diesel engine crankshafts on ships owned by COSCO, Tianjin Eranch. It discusses how in operation and maintenance the marine engineer can prevent the occurence of crankshaft damages, such as cracks, breakage, corossion and slip-moving of built-up crankshaft. Also, some suggestions have been made in this paper out of the writer's personal experience that might be helpful to operators and repair technicians.

    本文介绍了中远天津分公司船队的一些柴油机曲轴事故案例.作者从加强维修管理的角度出发,指出轮机管理人员应该怎样防止曲轴事故(从曲轴裂纹、断裂、腐蚀和组合式曲轴的滑移)的发生.根据我们工作中的体验,提出一些看法,供轮机管理人员和修理人员参考.

    This paper makes an analysis of the thermal stress and mechanical stress of the cylinder head of 9ESDZ 43/82 B-type diesel by applying the finite element method. It has been made clear that the cause of cracking occurred in the upper part of the walls of the cooling water chamber on the cylinder head is due to mechanical loads, especially the loads caused by the screws on the cylinder head.

    本文用有限元法分析了9ESDZ43/82B型柴油机气缸盖的热应力和机械应力.指出气缸盖冷却水腔上部壁处产生裂纹的原因是机械载荷,其中特别是气缸盖螺钉引起的载荷尤为重要.

     
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