Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Aluminum plate impact load positioning analysis method based on acoustic mode superposition

A technology of impact load and analysis method, which is applied in the direction of analyzing materials, using sonic/ultrasonic/infrasonic waves for material analysis, and processing the response signals of detection, which can solve problems such as casualties and equipment damage.

Active Publication Date: 2021-04-16
HOHAI UNIV
View PDF4 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the correct response measures are not taken in the early stage, it will cause damage to the equipment, and may even cause casualties due to improper operation.

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
  • Aluminum plate impact load positioning analysis method based on acoustic mode superposition
  • Aluminum plate impact load positioning analysis method based on acoustic mode superposition
  • Aluminum plate impact load positioning analysis method based on acoustic mode superposition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0072] In order to enable those skilled in the art to better understand the technical solutions in the application, the technical solutions in the embodiments of the application are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the application, and Not all examples. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0073] Such as figure 1 As shown, a localization analysis method of impact load of aluminum plate based on acoustic mode superposition, the analysis method includes radiation modal analysis of aluminum plate, establishment of radiation sound field of aluminum plate, measurement of local sound field information and inversion of load shock signal;

[0074] S1: The radiation modal analysis of the aluminum plate takes a rectangular thin plate as the...

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 provides an aluminum plate impact load positioning analysis method based on acoustic mode superposition. The aluminum plate impact load positioning analysis method comprises the steps of radiation mode analysis of an aluminum plate, establishment of a radiation sound field of the aluminum plate, measurement of local sound field information and inversion of a load impact signal. The radiation modal analysis of the aluminum plate takes a rectangular thin plate as a research object, and the inherent frequency and modal shape function of the aluminum plate can be calculated according to a free vibration differential equation of the thin plate. And according to an acoustic mode superposition method, an external radiation sound field of the aluminum plate can be obtained, and a corresponding relation between the radiation sound field and a load impact signal is established. The microphone array is reasonably arranged on the aluminum plate, so that certain local sound field information can be measured. The inversion of the load impact signal adopts a near-field acoustic holography theory, the information of the whole sound field is inverted from the local sound field information, the position of the load impact is positioned according to the corresponding relation between the radiation sound field and the load impact signal, and the load impact characteristic is inverted.

Description

technical field [0001] The invention relates to a method for positioning and analyzing the impact load of an aluminum plate based on acoustic mode superposition, and belongs to the field of structural health monitoring. Background technique [0002] In structural health monitoring, it is a key step to realize the localization of the impact part to deduce the damaged part. The inverted load shock characteristics provide an important reference for subsequent damage judgment and damage assessment. When using mechanical equipment, various forms of damage may gradually occur to the structure due to the load, which belongs to the damage caused by the impact of the load. If the correct response measures are not taken in the early stage, the equipment will be damaged, and there may even be casualties due to improper operation. Therefore, it is very important to be able to detect the damage caused by the load impact in time, and make an alarm, so as to evaluate the structural damag...

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): G01N29/22G01N29/44
CPCY02T90/00
Inventor 梁栋蔡宇航詹啸强余凯军杨兆宝
Owner HOHAI 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
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