公开(公告)号：US20140157900A1

公开(公告)日：2014-06-12

申请号：US14090035

申请日：2013-11-26

Applicant: SNECMA

Inventor： Jean-Yves Francois Roger CHATELLIER

IPC: G01N29/04

CPC classification number: G01N29/04 ,  G01N29/46 ,  G01N2291/0231 ,  G01N2291/044

Abstract: The invention relates to a method of characterizing an adhesive bond, the method comprising a step of recording an ultrasound wave reflected by an adhesive bond interface between two fragments, a step of resolving said wave into its sinusoidal components in order to characterize a mode of breaking to be expected in the event of the adhesive bonding interface breaking in shear.

Abstract translation: 本发明涉及一种表征粘合剂粘合的方法，所述方法包括记录由两片之间的粘合剂界面反射的超声波的步骤，将所述波分解成其正弦分量的步骤，以表征断裂模式 在粘合界面剪切断裂的情况下可以预期。

公开(公告)号：US20130345992A1

公开(公告)日：2013-12-26

申请号：US13917227

申请日：2013-06-13

Applicant: SNECMA

Inventor： Jean-Yves Francois Roger CHATELLIER

IPC: G01L1/10

CPC classification number: G01L1/10 ,  G01N29/46 ,  G01N2291/02827 ,  G01N2291/2693

Abstract: A method of determining the breaking stress in shear for a part of determined thickness and made up of two elements that are bonded together by a layer of adhesive. A plane sensor emits an ultrasound wave at the part of determined thickness. The plane sensor receives a reflected signal made up of a plurality of successive echoes. A processor unit calculates a fast Fourier transform of the reflected signal. A Gaussian envelope connecting together the peaks of all of the resonances of the fast Fourier transform is determined. A frequency at which the Gaussian envelope is at a maximum is determined. The breaking stress from a predetermined correspondence relationship between the frequency of the maximum of the Gaussian envelope and the breaking stress is determined.

Abstract translation: 确定部分确定厚度的剪切中的断裂应力的方法，并由由粘合剂层粘合在一起的两个元件组成。 平面传感器在确定的厚度部分发射超声波。 平面传感器接收由多个连续回波构成的反射信号。 处理器单元计算反射信号的快速傅里叶变换。 确定将快速傅里叶变换的所有谐振的峰值连接在一起的高斯包络线。 确定高斯包络处于最大值的频率。 确定高斯包络的最大值的频率与断裂应力之间的预定对应关系的断裂应力。