Multi-layer board damage detection method based on Stoneley wave energy transfer characteristic

An energy transfer and damage detection technology, which is applied in the analysis of solids using sonic/ultrasonic/infrasonic waves, which can solve problems such as user safety threats, casualties, and cracks between layers of thick plates, so as to improve the efficiency of damage detection and provide detailed fault information. , Detect the effect of convenient operation

Inactive Publication Date: 2015-12-02
XI AN JIAOTONG UNIV
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the layered structure of layered metal composites, damages such as local through cracks, interlaminar cracks in thick plates, and local delamination often occur during production, processing and engineering use. These damages change the local or overall stiffness and stiffness of the st...

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
  • Multi-layer board damage detection method based on Stoneley wave energy transfer characteristic
  • Multi-layer board damage detection method based on Stoneley wave energy transfer characteristic
  • Multi-layer board damage detection method based on Stoneley wave energy transfer characteristic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In a basic embodiment, a method for detecting damage of a multilayer board based on Stoneley wave energy transfer characteristics is provided, the method comprising the steps of:

[0027] S100, selecting an excitation frequency: selecting an excitation frequency that is favorable for judging the energy transfer of the Stoneley wave at the bonding interface of the multilayer board;

[0028] S200. Generate an excitation signal: generate a corresponding excitation signal based on the excitation frequency selected in S100, and apply it to the multilayer board with the bonding interface;

[0029] S300. Gathering signals: Gathering Stoneley wave signals propagating at the joint interface between the boards;

[0030] S400. Analyzing and judging damage: analyzing the collected signals to judge whether there is damage on the tested interface. If there is damage, the reflected echo signal formed by the damage is between the direct wave signal and the end surface reflected signal....

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 discloses a multi-layer board damage detection method based on a Stoneley wave energy transfer characteristic. According to the method, on the basis that in a multi-layer composite board, energy transfer exists on joints of two interfaces of Stoneley waves, under the condition of different excitation frequencies, distributions of energy magnitudes of the joints of interfaces between plates are different, and when a suitable excitation frequency is selected, independent detection of damage on a specific interface of the multi-layer composite board or simultaneous detection of damage on two interfaces of the multi-layer composite board can be achieved. The detection method is suitable for multi-layer composite board interface damage detection such as damage detection of a three-layer board, it can be guaranteed that fault information of all interfaces is detailed and accurate, the detection capacity is greatly improved, and implementation is convenient, easy and reliable.

Description

technical field [0001] The present disclosure relates to the field of non-destructive testing of mechanical structures, in particular to a method for the independent detection or detection of damage on a specific interface of a multilayer composite board based on the characteristic of Stoneley wave energy transfer between two interfaces in a multilayer composite board. A damage detection method for simultaneous detection of damage on two interfaces. Background technique [0002] With the emergence of new technologies and new industries, the demand for engineering materials with various properties is becoming more and more extensive. A single metal material is either limited by natural resources, or due to insufficient comprehensive performance, its application fields are greatly limited. In this case, the development, production and application of composite materials are increasingly showing their important status. [0003] As a kind of composite materials, layered metal c...

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
IPC IPC(8): G01N29/04
Inventor 李兵耿旭路通强磊李明航
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap