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1. 发明公开

EP1821099A4 ULTRASONIC TEST METHOD AND ULTRASONIC TEST INSTRUMENT USED FOR SAME 有权
标题翻译： ULTRASCHALLTESTVERFAHRENUNDDAFÜRVERWENDETESULTRASCHALLTESTGERÄT
公开(公告)号：EP1821099A4
公开(公告)日：2011-01-19
申请号：EP05806260
申请日：2005-11-11
申请人： INDEPENDENT ADMINISTRATIVE INSTITUTION JAPAN AEROSPACE EXPLORATION AGENCY
发明人： SHIRAI MAKOTO , MIYAMOTO H , MATSUBARA S
IPC分类号： G01N29/24 , G01N29/04 , G01N29/32 , G01N29/38
CPC分类号： G01N29/043 , G01N29/07 , G01N29/223 , G01N29/32 , G01N29/38 , G01N2291/0231 , G01N2291/0427 , G01N2291/044 , G01N2291/056 , G01N2291/102 , G01N2291/2694
摘要： An ultrasonic test method for detecting a defective portion more precisely in a noncontact reflection way, and ultra-sonic test instrument used for the method. An ultrasonic wave is transmitted from a transmitter (20 (21)) provided on one side of an object under test, and the reflected wave is received by a receiver (30 (31)) provided on the same side. The ultrasonic wave is transmitted/received through an air layer between the transmitter and the object (100) under test and between the receiver and the object (100). The relative positions of the transmitter (20), the receiver (30), and the object (100) are so determined that the air propagation time ta of the air path (RA) between the transmitter and the receiver is longer than the propagation time tb of the reflected wave in the reflection path (RB). The propagation of the ultrasonic wave through the solid body between the transmitter and the receiver is blocked. This invention is suitable to test laminated material (100) such as a laminate of CFRP (101) and insulation (102) in a noncontact way.
摘要翻译：一种用于以非接触反射方式更准确地检测缺陷部分的超声波测试方法，以及用于该方法的超声波测试仪器。从设置在被测物体的一侧的发送器（20（21））发送超声波，反射波由设置在同一侧的接收器（30（31））接收。超声波通过发射机与待测物体（100）之间的空气层和接收器与物体（100）之间的空气层进行传输/接收。如此确定发射器（20），接收器（30）和物体（100）的相对位置，使得发射器和接收器之间的空气路径（RA）的空气传播时间ta比传播时间长在反射路径（RB）中的反射波的tb。超声波在发射机和接收机之间通过固体的传播被阻挡。本发明适用于以非接触方式测试诸如CFRP（101）和绝缘体（102）的层压材料的层合材料（100）。

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