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The Development of Annular Electron Beam Welding Line Ultrasonic Automatic Test System

Author: WuChengBo
Tutor: XuZhiNong；ZhouXiaoJun
School: Zhejiang University
Course: Mechanical Manufacturing and Automation
Keywords: Annulus Electron beam Weld Ultrasonic testing Automation Ultrasound imaging Image processing
CLC: TG43
Type: Master's thesis
Year: 2005
Downloads: 327
Quote: 7
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Abstract


In this paper, the actual project as the basis, the annular electron beam welding automatic ultrasonic detection system. In the research process, the latest automation and control technology and ultrasonic signal high-speed acquisition and processing technology is introduced into the ultrasonic automatic detection system. The same time, the application of ultrasound imaging and sound image processing technique to the present system to achieve automation of the annular electron beam weld ultrasonic testing. The first chapter describes the background of the project and technical requirements of this project to clarify the significance of the annular electron beam welding Automatic Ultrasonic Inspection System; describes the current domestic and foreign ultrasonic testing automation technology, ultrasound imaging and sound and image processing technology research the status quo; Finally, the main research content and organizational structure. The second chapter studies annular electron beam weld ultrasonic testing principle. To clarify the role of ultrasonic detection technology to ensure weld quality, and then through the structural characteristics of the electron beam girth welding parts, welding process characteristics and defect distribution characteristics analysis, research and resolve annular electron beam welding ultrasonic detection testing method, display and imaging method, the probe selection, coupling agents to determine a series of technical problems, the sound of water in the ultrasonic testing process automatic adjustment method. Chapter annular electron beam weld ultrasonic testing automation. First the overall structure of the system design and planning, and in the analysis of the annular electron beam welding parts required for a typical workpiece scanning path based on the annular electron beam welding automatic detection of mechanical system design, as well as motion control and ultrasound trigger signal acquisition and control. PC motion control card and fieldbus technology in the latest control technology-based motion control based on integrated sound card ultrasonic signals trigger acquisition and control. The fourth chapter studies annular electron beam weld ultrasonic testing, imaging and sound and image processing. First ultrasound imaging and principles of composition, and then for ultrasonic nondestructive detection imaging particularity, the study discusses the image processing method suitable for ultrasonic testing, the ultrasound imaging detection of visual, intuitive, easy to defects interpretation, in order to fully play to the advantages of ultrasound imaging detection. Chapter V system software design and experimental validation of the system, the ultrasonic testing system software design framework and system software features; Chapter review and sum up the work of the full text on the next step raised some preliminary conceived.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Welding, metal cutting and metal bonding > Welding equipment
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