公开(公告)号：US20160109283A1

公开(公告)日：2016-04-21

申请号：US14893908

申请日：2014-05-22

Applicant: SNECMA

Inventor： Nicolas Broussais-Colella ,  Jean-Yves Chatellier ,  Jeremy Duval

IPC: G01H1/00 ,  G01N29/44

CPC classification number: G01H1/003 ,  G01N29/11 ,  G01N29/44 ,  G01N29/4463 ,  G01N2291/0231 ,  G01N2291/0289 ,  G01N2291/044 ,  G01N2291/048

Abstract: The invention relates to a method for inspecting an object by means of ultrasound transmission, comprising the steps consisting in: sweeping an ultrasound beam over a reference part that has the same geometry as the object to be inspected, and measuring the amplitude (1100) transmitted through the part in order to obtain (1200) a mapping thereof, the ultrasound beam being amplified with a reference gain; determining (1300) gain corrections to be added to the reference gain at certain points during the sweeping of the reference part in order to obtain an ultrasound beam amplitude transmitted through the part which is constant at each point of the mapping; and sweeping an ultrasound beam over the object to be inspected and measuring the transmitted amplitude (2100), the gain applied to the various points during the sweeping corresponding to the reference gain corrected on the basis of said corrections.

Abstract translation: 本发明涉及一种用于通过超声波传输检查物体的方法，包括以下步骤：将超声波束扫过与待检查物体具有相同几何形状的参考部分，并测量发射的振幅（1100） 通过该部分以获得（1200）其映射，超声波束以参考增益被放大; 在扫描参考部分期间在某些点处确定（1300）增益校正以被添加到参考增益，以便获得通过在映射的每个点处是恒定的部分传输的超声波束幅度; 并且将超声波束扫过要检查的物体并测量发射振幅（2100），对应于基于所述校正校正的参考增益，施加到扫描期间的各个点的增益。

公开(公告)号：US10041828B2

公开(公告)日：2018-08-07

申请号：US14893908

申请日：2014-05-22

Applicant: SNECMA

Inventor： Nicolas Broussais-Colella ,  Jean-Yves Chatellier ,  Jeremy Duval

IPC: G01N29/44 ,  G01N29/04 ,  G01H1/00 ,  G01N29/11

Abstract: A method for inspecting an object by ultrasound transmission, including sweeping an ultrasound beam over a reference part that has the same geometry as the object to be inspected, and measuring the amplitude transmitted through the part to obtain a mapping thereof. The ultrasound beam is amplified with a reference gain. The method further includes determining gain corrections to be added to the reference gain at certain points during the sweeping of the reference part to obtain an ultrasound beam amplitude transmitted through the part which is constant at each point of the mapping, and sweeping an ultrasound beam over the object to be inspected and measuring the transmitted amplitude. The gain applied to the various points during the sweeping corresponds to the reference gain corrected on the basis of said corrections.