超声波探伤

• For this reason , limiting the tightening times has been put forward , and concrete measures for preventing failure of high temperature bolts , such as ultrasonic detection and surface inspection etc . , being strengthened
  对此，提出了限制运行周期和紧固次数，加强对螺栓超声波探伤和表面探伤等防止高温螺栓失效的具体措施。
• Among them , ut is an essential branch that has the advantages of wide detecting field , thorough testing , high sensitivity , easy to operate , speed , correctness , economic and harmless to human bodies
  其中超声波探伤是应用最广的一种，具有测量材质种类多、探伤深度大、灵敏度高、操作方便、快速、正确、经济、对人体无害等优点。
• It has set up physical chemical inspection center , 3 - d coordinate meter lab aberlink , made in england , helium leakage indicator lab shimadzu , made in japan , ultrasonic crack detector lab , x - ray fault indicator lab
  已建有理化检验中心英国aberlink三维坐标仪检测室日本岛津氦质普检漏室水压泄漏检测室超声波探伤室x射线探伤室。
• Aiming at analyzing the mechanism of high noisy level during ultrasonic testing of titanium plates and bars , three aspects of microstructure , surface roughness of workpiece and probe frequency were tested and analyzed
  摘要针对钛合金板和棒材超声波探伤时杂波水平较高的情况，从显微组织、工件表面粗糙度和探头频谱三方面进行了试验分析。
• Results showed that in addition to the effect of microstructure on ultrasonic testing noise of the titanium alloys , the roughness of the workpiece and the probe frequency both had great influence on noisy level , as well
  结果表明，除显微组织对钛合金超声波探伤杂波水平产生影响外，工件表面粗糙度以及探头频谱对杂波水平也有较大的影响。
• The typical lamination defect of steel plate is introduced herein by analyzing actual situation . the proposal is presented that steel plate should be detected 100 % by ut before manufacturing to control the quality
  对分层类型缺陷进行阐述，分层缺陷检测、鉴定，并对一钢板分层实例进行分析总结，提出对钢板逐张进行100的超声波探伤，将缺陷消除在最初阶段。
• Stating manufacturing test - components and checking measure in supersonic detection of using railway wheel shaft for power locomotive . material , checking - measures and test - components manufacturing are the important factors for supersonic detection
  叙述了电力机车在役车轴超声波探伤工作中的试块制造、 3种检测方法，而材料、检测方法、试块制造等也是影响超声波探伤定量的重要因素。
• Weld positioning under load without installation , seam thickness of the seam thickness of not less than two - thirds of the design , not to exceed 8 mm , should not be less than 25 mm in length weld , located in welds inside
  安装定位焊缝不需承受荷载时,焊缝厚度不少于设计焊缝厚度的2 / 3 ,且不大于8 ? ,焊缝长度不宜小于25 ? ,位置应在焊道内.安装焊缝全数外观检查,主要的焊缝应按设计要求用超声波探伤检查内在质量.上述检查均需做出记录
• Finally , the relationship between the damage and the descent of ultrasonic velocity due to triaxial compressive loading history was investigated . it is concluded that the ultrasonic pulse method is convenient and applicable to estimate the damage of concrete due to loading history in engineering practice
  最后，根据超声波探伤原理对混凝土载后损伤与超声波速降低之间的关系进行了细致的研究，取得了一些对工程实践具有重要指导意义的结论。