Beam crack fault detection apparatus and apparatus based on frequency sweep frequency sweep excitation vibration

A technology for fault detection and vibration excitation, which is used in measuring devices, testing of mechanical components, testing of machine/structural components, etc. It can solve problems such as low crack sensitivity, high requirements for theoretical analysis and operating skills, and achieve broad engineering applications. Prospects, the effect of the realization process is simple and easy

Inactive Publication Date: 2015-11-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF3 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the existing dynamic excitation crack detection technology requires high theoretical analysis and operatio

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
  • Beam crack fault detection apparatus and apparatus based on frequency sweep frequency sweep excitation vibration
  • Beam crack fault detection apparatus and apparatus based on frequency sweep frequency sweep excitation vibration
  • Beam crack fault detection apparatus and apparatus based on frequency sweep frequency sweep excitation vibration

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0033] The invention provides a beam crack fault detection device based on sweep frequency excitation vibration, such as figure 1 As shown, it includes a signal acquisition unit, a frequency sweep signal generator, an exciter, and a computer digital signal acquisition and analysis unit, and the frequency sweep signal generator, an oscillator, a signal acquisition unit, and a computer digital signal acquisition and analysis unit are connected in sequence.

[0034] Among them, the frequency sweep signal generator is used to generate the sine frequency sweep excitation, and the vibrator is used to realize the excitation process. The frequency sweep signal generator is connected to the vibrator through a high-power cable to realize the sinusoidal frequency sweep excitation to the beam structure.

[0035] The signal acquisition unit is connected with the com...

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 beam crack fault detection apparatus and apparatus based on frequency sweep frequency sweep excitation vibration. By use of a vibration signal excitation and data acquisition system, given sine frequency sweep excitation is applied to a beam structure, and according to the frequency change of the frequency sweep excitation, innovative re-sampling, filtering and statistical analyzing are carried out on beam vibration signals so that fault diagnosis and fault degree classification carried out on different-degree cracks of a simply supported girder are realized.

Description

technical field [0001] The invention belongs to the technical field of fault diagnosis and prediction of mechanical equipment, and in particular relates to the design of a beam crack fault detection device and method based on sweep frequency excitation vibration. Background technique [0002] In recent years, the health monitoring of mechanical structures has attracted more and more attention, especially the proposal of Industry 4.0 and 2025 Made in China, which put forward higher requirements for the health management of mechanical equipment operation status, and adopt simple and effective methods to realize the The assessment of the health status of the machine has become an important research topic in the health management of mechanical equipment. [0003] Fatigue cracks are common faults in mechanical structures, and tiny cracks are difficult to detect and detect. Potential crack propagation will have catastrophic consequences, and effective detection and classification...

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): G01M13/00G01N29/04
Inventor 王科盛张冕罗大双韦东冬
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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