公开(公告)号：WO2011106890A1

公开(公告)日：2011-09-09

申请号：PCT/CA2011/000254

申请日：2011-03-04

Applicant: SOCPRA SCIENCES ET GÉNIE S.E.C. ,  MASSON, Patrice ,  MICHEAU, Philippe ,  QUAEGEBEUR, Nicolas ,  LANGLOIS DEMERS, Dominique

Inventor： MASSON, Patrice ,  MICHEAU, Philippe ,  QUAEGEBEUR, Nicolas ,  LANGLOIS DEMERS, Dominique

IPC: G01N29/50 ,  G01N29/04

CPC classification number: G01N29/069 ,  G01N29/07 ,  G01N29/226 ,  G01N29/2475 ,  G01N29/30 ,  G01N29/343 ,  G01N29/4427 ,  G01N2291/0256 ,  G01N2291/0258 ,  G01N2291/044 ,  G01N2291/101 ,  G01N2291/102

Abstract: The invention relates to a method for providing a structural condition of a structure, comprising providing an excitation wave generator; providing an excitation wave sensor; injecting an excitation burst wave into the structure using the excitation wave generator; obtaining a measured propagated excitation burst wave using the excitation wave sensor; correlating the measured propagated excitation burst wave with one of a plurality of theoretical dispersed versions of the excitation burst wave; and providing an indication of the structural condition of the structure corresponding to the correlated measured propagated excitation burst wave. The method may offer a better localization of the reflection points and thus of the potential defects present in a structure under inspection, when compared with a group velocity-based or time-of-flight (ToF) approach. The method may be particularly useful for structural health monitoring (SHM) and Non-Destructive Testing (NDT). The method may also enable determination of the mechanical properties of the structure.

Abstract translation: 本发明涉及一种用于提供结构的结构状态的方法，包括提供激励波发生器; 提供激发波传感器; 使用激发波发生器将激发脉冲波注入结构; 使用激发波传感器获得测量的传播的激发脉冲波; 将所测量的传播激发脉冲波与激发脉冲波的多个理论分散版本中的一个相关联; 并提供对应于相关测量的传播激发脉冲波的结构的结构状态的指示。 当与基于组速度或飞行时间（ToF）方法相比时，该方法可以提供更好的定位反射点以及因此存在于被检查结构中的潜在缺陷。 该方法对于结构健康监测（SHM）和无损检测（NDT）可能特别有用。 该方法还可以确定结构的机械性能。

公开(公告)号：WO2014019075A1

公开(公告)日：2014-02-06

申请号：PCT/CA2013/000688

申请日：2013-08-01

Applicant: SOCPRA SCIENCES ET GÉNIE S.E.C.

Inventor： MASSON, Patrice ,  QUAEGEBEUR, Nicolas ,  OSTIGUY, Pierre-Claude ,  BEAUDET, Nicolas ,  SARRET, Philippe

IPC: G01L1/25 ,  A61B5/103 ,  A61B5/117 ,  G01B17/00 ,  G06F3/043 ,  G06K9/00 ,  G01H11/08 ,  G01L25/00

CPC classification number: G06F3/0436 ,  G01B17/00 ,  G01L1/255

Abstract: Method and apparatus for determining that a pressure field is applied on a structure. A plurality of acoustic waves are generated within the structure using at least one wave generator and a plurality of measurements of the acoustic waves is taken using at least one wave sensor. A pressure field applied to a surface of the structure is determined by processing at least two of the plurality of measurements. The wave generator and the wave sensor may be piezoelectric elements, which may alternate between acting as the wave generator and the wave sensor. Processing the measurements may comprise obtaining a differential measurement value and comparing the value to a threshold. Determining that the pressure field is applied may comprise processing the measurements using a model based on acoustic wave propagation or experimental results. The processing may provide a mapping of the pressure field of an object on the structure.

Abstract translation: 用于确定在结构上施加压力场的方法和装置。 使用至少一个波发生器在结构内产生多个声波，并且使用至少一个波传感器采用声波的多个测量。 通过处理多个测量中的至少两个来确定施加到结构的表面的压力场。 波发生器和波传感器可以是压电元件，其可以作为波发生器和波传感器之间交替。 处理测量可以包括获得差分测量值并将该值与阈值进行比较。 确定压力场的应用可以包括使用基于声波传播或实验结果的模型处理测量。 处理可以提供对象在结构上的压力场的映射。