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1. 发明申请

WO2010097269A1 A METHOD FOR TESTING PIPELINE WELDS USING ULTRASONIC PHASED ARRAYS 审中-公开
标题翻译：使用超声波相位阵列测试管道的方法
公开(公告)号：WO2010097269A1
公开(公告)日：2010-09-02
申请号：PCT/EP2010/051172
申请日：2010-02-01
申请人： SAIPEM S.P.A , CATALDO, Giuseppina , DILIGENT, Olivier
发明人： CATALDO, Giuseppina , DILIGENT, Olivier
IPC分类号： G01N29/04 , G01N29/26 , G01N29/44
CPC分类号： G01N29/262 , G01N29/043 , G01N29/4445 , G01N2291/106 , G01N2291/2634 , G01N2291/2675
摘要： NDT inspection of an austenitic weld between two CRA Clad pipes (2) using a phased ultrasonic transducer array system (8a, 8b) is described. The method may be performed during laying of gas/oil fatigue sensitive pipelines, for example, at sea. Two types of UT inspection may be generated simultaneously by a Phased Array on each side (Upstream and Downstream) of a girth weld. Firstly, mode converted longitudinal waves are used. These waves have properties that they propagate well. Shear waves (10) are also used. The combination of these two ultrasonic waves, with the addition of surface waves (7), enables 100% of the girth weld to be inspected to the standard required in fatigue sensitive welds, such as Steel Catenary Risers. Shear waves (10) and compression waves are emitted substantially contemporaneously. Defects may be detected and measured using time of flight information and amplitudes of radiation detected on reflection and on diffraction from the defect.
摘要翻译：描述了使用相位超声波换能器阵列系统（8a，8b）的两个CRA包层管（2）之间的奥氏体焊接的无损检测。该方法可以在例如在海上铺设气/油疲劳敏感管道期间进行。可以通过环形焊缝的每侧（上游和下游）上的相控阵列同时产生两种类型的UT检查。首先，使用模式转换纵波。这些波具有很好的传播性质。剪切波（10）也被使用。通过增加表面波（7），这两个超声波的组合使100％的环形焊缝能够被检测到疲劳敏感焊缝所需的标准，例如钢悬臂梁。剪切波（10）和压缩波基本同时发射。可以使用飞行时间信息和在反射上检测到的辐射的振幅以及来自缺陷的衍射来检测和测量缺陷。

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