Ultrasonic Testing of Butt Weld Joint by TOFD Technique
نویسندگان
چکیده
منابع مشابه
The Analysis of Longitudinal Shrinkage in Butt Weld Joint (TECHNICAL NOTE)
In this research longitudinal shrinkage of two steel plates with identical thickness that are joint together through butt welding and another steel plate with bead welding. This study begins withthe introduction of a model, in which the thermoelastoplastic zones near the weld line is simulated with a thermoelastoplastic flat bar, and full-elastic areas beyond the weld line is simulated with a f...
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when testing the defect by ultrasonic time of flight diffraction (TOFD), the image signal detected is often reshaped and resulted in inaccuracy of defect measurements because the probe beam has a limited range. This paper proposed an image enhancement method based on synthetic aperture focusing technique (SAFT). A mathematical model of testing image was first established based on the generation...
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Ultrasonic Time-Of-Flight Diffraction (TOFD) is a recent innovation that has proved highly effective for the inspection of steel plates and tubular pipelines and has started to take its way to replace the other ultrasonic testing techniques. TOFD technique has a lot of advantages which make it the preferable technique in material testing. This technique gives accurate sizing, positioning and ch...
متن کاملFinite Element Analysis of Effect of Weld Toe Radius and Plate Thickness on Fatigue Life of Butt Welded Joint
Mechanical parts during service may be subjected to cyclical loading and high stresses, which make fatigue life prediction extremely important. The finite element method is commonly used in research institutions and industry in order to estimate life span of mechanical parts. In this study, an experimental investigation of the geometrical dimensions and mechanical properties of a weld joint, an...
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The present work evaluates the application of artificial neural networks for pattern recognition of ultrasonic signals using pulse-echo and TOFD (Time of Flight Diffraction) techniques in weld beads. In this study pattern classifiers are implemented by artificial neural network of backpropagation type using MATLAB. The ultrasonic signals acquired from pulse-echo and TOFD were introduced, separ...
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ژورنال
عنوان ژورنال: Manufacturing Technology
سال: 2017
ISSN: 1213-2489,1213-2489
DOI: 10.21062/ujep/x.2017/a/1213-2489/mt/17/6/842