公开(公告)号：US20160223495A1

公开(公告)日：2016-08-04

申请号：US14917739

申请日：2014-09-09

Applicant: AIRBUS GROUP SAS

Inventor： Nicolas DOMINGUEZ ,  Frank GUIBERT

IPC: G01N29/14 ,  G01N29/36 ,  G01N29/07

CPC classification number: G01N29/14 ,  G01N29/07 ,  G01N29/11 ,  G01N29/30 ,  G01N29/36 ,  G01N29/4463 ,  G01N29/46 ,  G01N2291/011 ,  G01N2291/015 ,  G01N2291/044

Abstract: A method for the non-destructive ultrasonic testing of a part by the analysis of echoes returned by the part in response to the emission of an ultrasonic wave via an ultrasonic transducer, includes a step of determining a variable gain curve and a step of correcting the amplitude of the echoes returned by the part according to the variable gain curve and the moments of reception of the echoes. The method further includes steps of: producing a wave function representative of an ultrasonic transducer; producing transfer functions Fm representative of the frequency responses of reference samples Rm of the material forming the part; and calculating reference attenuation values between the wave function and the results of calculations of filtering of the wave function by the respective transfer functions Fm of the reference samples Rm.

Abstract translation: 通过分析响应于通过超声波换能器发射超声波的部分返回的回波而对部分进行非破坏性超声波测试的方法包括确定可变增益曲线的步骤和校正步骤 根据可变增益曲线部分返回的回波振幅和回波的接收时刻。 该方法还包括以下步骤：产生代表超声换能器的波函数; 产生传递函数Fm代表构成部分的材料的参考样品Rm的频率响应; 以及通过参考样本Rm的相应传递函数Fm计算波函数和波函数的滤波计算结果之间的参考衰减值。