Evaluation and Quality Control of Resistance-Welded Joints

2011 ◽  
pp. 486-503
Keyword(s):  
Quality Control ◽  
Welded Joints

Features of ultrasonic control of butt welded joints of polyethylene pipes

2020 ◽  
pp. 46-52
Author(s):  
N.P. Aleshin ◽  
D.M. Kozlov ◽  
L.YU. Mogilner
Keyword(s):  
Quality Control ◽  
Welded Joints ◽  
Ultrasonic Testing ◽  
Ultrasonic Inspection ◽  
Mechanical Tests ◽  
Ultrasonic Control ◽  
Lack Of Fusion ◽  
Polyethylene Pipes ◽  
End To End

The reliability of ultrasonic testing (UT) of the quality of welded joints of polyethylene pipelines, made end-to-end with a heated tool, is considered in comparison with mechanical tests and radiography. The greatest detection of solid defects is provided by ultrasonic inspection with the use of chord tipe probes (not less than 90 %). When detecting defects translucent for ultrasound (lack of penetration, lack of fusion, etc.), the reliability decreases to 70÷80 %. Keywords: welding, polyethylene pipeline, quality control, ultrasonic testing, chord tipe probe. [email protected]

Similar and Dissimilar FSWed Joints in Lightweight Alloys: Heating Distribution Assessment and IR Thermography Monitoring for On-Line Quality Control

2013 ◽  
Vol 554-557 ◽  
pp. 1055-1064 ◽  
Author(s):  
Archimede Forcellese ◽  
Milena Martarelli ◽  
Giuseppe Pandarese ◽  
Michela Simoncini
Keyword(s):  
Quality Control ◽  
Welded Joints ◽  
Ir Thermography ◽  
Friction Stir ◽  
Welding Line ◽  
Lightweight Alloys ◽  
On Line ◽  
Bottom Side ◽  
Non Destructive ◽  
Fsw Experiments

The heating distribution assessment on similar and dissimilar friction stir welded joints in AA6082 and AA5754 aluminium alloy sheets was investigated. The FSW experiments were carried out using constant rotational and welding speeds of 1500 rpm and 60 mm/min, respectively. Temperature was locally measured by means of K-type thermocouples inserted into thin grooves located on the bottom side of the sheets, in fixed positions, very close to the welding line. It was observed that the mechanical properties of joints are related to the heat distribution. In order to obtain a completely non intrusive temperature monitoring, that was able to follow the process dynamic, a non-contact measurement system based on infrared thermography was also developed. Such system, used for the experimental evaluation of temperature on the upper surface of the joints, is also able to detect the presence of flow defects with a non-destructive method, demonstrating its effectiveness as a diagnostic instrument for the on-line quality control of welded joints.

scholarly journals IMPROVING THE QUALITY OF CONTROL OF WELDED JOINTS IN THE PRODUCTION OF MECHANICAL ENGINEERING PRODUCTS

2021 ◽  
Vol 23 (3) ◽  
pp. 40-46
Author(s):  
I.V. Malkina ◽  
◽  
D.V. Zhdanov ◽  
Keyword(s):  
Quality Control ◽  
Welded Joints ◽  
Block Diagram ◽  
Programmable Logic Controller ◽  
Automated System ◽  
Programmable Logic ◽  
Sensors And Actuators ◽  
Quality Of Control ◽  
Automated Quality Control

The purpose of the work is to develop an automated quality control system for welded joints of cable car structures designed and manufactured at the Skado LLC enterprise (Samara) in order to improve the quality of control. The analysis of requirements for welded structures and welded joints of cable cars is carried out, methods of control of welded joints are considered. A block diagram of an automated system for quality control of welded joints based on the method of ultrasonic testing has been developed. The analysis of ultrasonic sensors on phased arrays is carried out. The sensors and actuators of the system are selected. A scheme for interfacing system elements with a programmable logic controller has been developed. The structure of the system and the scheme of interfacing the system elements with the programmable logic controller are described. A method for performing control has been developed.

Quality control of steel for large-sized welded structures of Arctic shelf. Application of Russian and foreign requirements

2019 ◽  
pp. 136-153
Author(s):  
V. Yu. Filin
Keyword(s):  
Quality Control ◽  
Scale Development ◽  
Welded Joints ◽  
Low Temperatures ◽  
Large Scale ◽  
Arctic Shelf ◽  
Marine Structures ◽  
Welded Structures ◽  
International Projects ◽  
The Difference

Future large-scale development of Arctic inevitably requires marine structures both of Russian and foreign manufacturers and, correspondingly, applying of domestic and foreign steels. So, it is expedient to compare Russian and foreign systems of standard requirements for steel products and welded joints’ metal applied at low temperatures. The paper analyzes their theoretical and experimental grounding as it is extremely important because the difference in requirements serves an instrument to drive out Russian steel manufacturers from international projects.

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