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

Inspection method of pipe seat fillet weld based on civa simulation software

A technology of simulation software and detection method, which is applied in the direction of using sound wave/ultrasonic wave/infrasonic wave to analyze solids, etc. It can solve the problem of high experience dependence of engineering personnel, achieve the effect of small experience dependence, low detection efficiency, and not easy to miss detection

Active Publication Date: 2016-09-14
BEIJING UNIV OF TECH
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a method for detecting defects of pipe seat fillet welds based on a conventional ultrasonic angle probe, by which the defect detection efficiency and reliability of pipe seat fillet welds can be greatly improved; Practical problems with high dependence on engineering personnel's experience

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
  • Inspection method of pipe seat fillet weld based on civa simulation software
  • Inspection method of pipe seat fillet weld based on civa simulation software
  • Inspection method of pipe seat fillet weld based on civa simulation software

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] 1) In order to facilitate processing and testing, the test piece is welded by two steel plates with a thickness of 40mm. First, the numerical simulation module is used for simulation calculation, and the same simulation model as the actual test piece is established in CIVA software, and a hole-like defect with a length of 10 mm and a diameter of 2 mm perpendicular to the side surface is added to the model. Place the probe on the upper surface of the bottom plate for detection, the probe frequency is selected as 2.25MHz, the probe chip size is set as 10mm, only the angle of the probe is changed, and a simulation calculation is performed every two degrees from 30° to 60°. The sensor position-echo signal amplitude curves at different angles are obtained. The probe position-signal amplitude curve and the detectable area graph of the defect are obtained by summarizing and processing with MATLAB software.

[0025] 2) During the detection process, when the angle probe is sele...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a CIVA software-based ultrasonic detection method for fillet weld defects of pipe bases, belonging to the field of non-destructive testing. The present invention utilizes the numerical simulation module to carry out numerical simulation, obtains the sensor detection position-amplitude curve, the graph of the detectable region of the weld defect; selects the detection angle and the detection position of the sensor according to the simulation result to place the sensor; under the control of the computer, the ultrasonic signal is excited The / receiving module generates an excitation signal, and the ultrasonic signal is excited by the sensor to be emitted along the test piece, and the reflected ultrasonic signal is received by the sensor, and then transmitted to the computer through the ultrasonic excitation / receiving module; it can be obtained through the acquisition software in the computer The waveform is detected, and finally the position of the weld defect can be determined through the calculation of the sound path. The invention can greatly improve the defect detection efficiency and the reliability of the defect detection of the pipe seat fillet weld.

Description

technical field [0001] The invention relates to a method for detecting defects of pipe seat fillet welds based on sound field simulation software. The method is mainly used for structures such as pipe seat fillet welds and belongs to the field of non-destructive testing. Background technique [0002] The fillet weld of the header pipe seat is a rigid structure connecting the pipe row and the header, and its structural stress is mainly concentrated at the root of the fillet weld. The fillet weld cools quickly during the welding process, and is prone to defects such as incomplete penetration, infusion, and cracks, and its service environment is generally accompanied by a large temperature difference, which is likely to cause cracks and the expansion of the unfused area. The analysis results of fillet weld leakage in some thermal power plants in recent years show that most of the leakage is caused by the expansion of dangerous defects such as incomplete penetration, incomplete ...

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 Patents(China)
IPC IPC(8): G01N29/07
Inventor 焦敬品侯松刘伟何存富吴斌
Owner BEIJING UNIV 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