Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for nondestructive inspection by ultrasound of a bonded assembly

A component and bonding technology, which is applied in the direction of material analysis using sound wave/ultrasonic wave/infrasonic wave, solid state analysis using sound wave/ultrasonic wave/infrasonic wave, processing detection response signal, etc., can solve the problem of measuring adhesion and hindering the generalization of bonding technology , Quantify the mechanical strength of the bonded components, etc., to achieve the effect of easy inspection

Inactive Publication Date: 2019-07-02
SAFRAN
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While many non-destructive assessment methods exist, the easiest method is undoubtedly the visual inspection method, existing traditional methods cannot truly quantify the mechanical strength of bonded components
[0005] In the absence of suitable methods for quantitatively checking the quality of the bond, it is difficult, if not impossible, to measure the degree of adhesion of these assembled structures and thus to check, verify and guarantee the quality and reliability of the bond
This hinders the generalization of bonding technology as a means of assembly and thus the use of structural components made of composite materials in the aerospace industry

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for nondestructive inspection by ultrasound of a bonded assembly
  • Method for nondestructive inspection by ultrasound of a bonded assembly
  • Method for nondestructive inspection by ultrasound of a bonded assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] now refer to figure 1 . figure 1 A sample of the glued component 1 on which the first step of the described method was applied is shown. The bonded component 1 is a component composed of a first layer 3 composed of a first composite material and a second layer 5 assembled together by an adhesive connection 7, the second layer may consist of a second composite material or Not comprised of the second composite material.

[0032] An ultrasound device 9 is placed in contact with the sample of the bonded component 1 . In the example shown, the ultrasound device 9 is a multi-element ultrasound 11 transducer 9 which acts in contact. The intrinsic properties of the transducer 9 (flat or flexible, number of elements 11, size, center frequency, etc.) may differ depending on the bonded assembly 1 considered, in order to enable the generation / detection of the physical phenomena involved ( In particular, the emission and acquisition of the emitted ultrasound signal 12 are optimi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a method for nondestructive inspection by ultrasound of a bonded assembly (1). The method comprises two steps, consisting of measuring a thickness of an adhesive joint (7) ofthe bonded assembly (1) by means of an ultrasound transducer (9) arranged on the bonded assembly (1) in a determined position, and measuring the degree of adhesion of parts of the bonded assembly (1)by means of the same ultrasound transducer (9) maintained in said determined position, the degree of adhesion being measured by means of ZGV Lamb waves (13).

Description

technical field [0001] The present invention relates to a method for nondestructive inspection (NDI) of anisotropic multilayer composite media, and in particular to a method for inspecting bonded assemblies intended to resist Quantitative method for the degree of adhesion of mechanically bonded joints. Background technique [0002] In aerospace, composite materials offer many advantages over traditionally used metallic materials. Among the advantages of these composite materials, mention is made of the composite's large stiffness / mass ratio, good fatigue and corrosion resistance and good adaptability of mechanical properties to the specific loads applied to the composite during use. [0003] Thus, the use of composite materials results in a reduction in the weight of the structure. For example, in civil aviation, the use of composite materials can reduce the mass of components by 20%, while having the same or even higher structural rigidity. This saves an estimated 6% of ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/30G01N29/44G01N29/46G01N29/52G01N29/26
CPCG01N29/041G01N29/262G01N29/30G01N29/4409G01N29/46G01N29/52G01N2291/0231G01N2291/02854G01N2291/0427G01N2291/106G01N2291/2632G01N2291/2694G01N29/04G01N29/4472
Inventor 马修·罗伊克·杜克索尼古拉斯·古维列
Owner SAFRAN