Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Sound wave direction control method of frequency sweeping multichannel ultrasonic guided wave device

An ultrasonic guided wave and direction control technology, which is applied to the generation of ultrasonic/sonic/infrasonic waves, material analysis using sonic/ultrasonic/infrasonic waves, and measurement devices, etc. It can solve problems such as superimposed signal distortion and achieve the effect of suppressing signal leakage.

Active Publication Date: 2022-04-15
HARBIN INST OF TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the existing guided wave direction control method based on frequency-sweeping multi-channel electromagnetic ultrasonic wave-guiding device may cause superimposed signal distortion at certain frequencies, the present invention provides a sound-wave direction control method of frequency-sweeping multi-channel ultrasonic wave guiding device Control Method

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
  • Sound wave direction control method of frequency sweeping multichannel ultrasonic guided wave device
  • Sound wave direction control method of frequency sweeping multichannel ultrasonic guided wave device
  • Sound wave direction control method of frequency sweeping multichannel ultrasonic guided wave device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0021] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0023] The frequency-sweeping multi-channel ultrasonic guided wave device of this embodiment includes a multi-ch...

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 sound wave direction control method of a sweep-frequency multichannel ultrasonic guided wave device, solves the problem that an existing guided wave direction control method can cause distortion of superposed signals under certain frequencies, and belongs to the technical field of nondestructive testing and evaluation. The method comprises the steps that transducers of an ultrasonic guided wave device are installed on a tested piece, transmitting coils of the transducers are distributed side by side at any intervals in the ultrasonic guided wave propagation direction, coordinate axes are established, the number of the transmitting coils is n, excitation current amplitudes of the first (n-1) transmitting coils are all set as Ix, and the excitation current amplitude of the nth transmitting coil is set as (n-1) Ix; at any point x and any moment t0 of the suppressed side of the ultrasonic guided wave signals, all the signals reach the point x at the same time, the amplitude is zero after superposition, and the excitation current initial phase of each transmitting coil is calculated; and adjusting the initial phase of excitation current of the transmitting coil array to realize direction control of sound waves.

Description

technical field [0001] The invention relates to an optimization method for sound wave direction control of a frequency-sweeping multi-channel ultrasonic waveguide device, and belongs to the technical field of non-destructive testing and evaluation. Background technique [0002] With the continuous development of the level of industrialization, it is of great significance to regularly inspect and monitor the health of industrial structures to ensure their safe operation. Therefore, the application of non-destructive testing technology is becoming more and more extensive, especially the ultrasonic guided wave testing technology, which has the technical advantages of high detection efficiency and low cost, and is suitable for defect detection and health monitoring of large industrial structures. [0003] The electromagnetic ultrasonic guided wave detection method is easier to control the type, mode and propagation direction of the guided wave by changing the structure of the tr...

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): G01N29/24G01N29/32G01N29/34
Inventor 王淑娟李策何成
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com