Assessment of Integrity and Reliability of Weld Joints in Steel Structure to Attain Sustainability in Infrastructure Manufacturing

A. Rahim¹ , M.A. Habib²

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.6 , pp.33-36, Dec-2021

Online published on Dec 31, 2021

Copyright © A. Rahim, M.A. Habib . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
The quality of weld is dependent on various parameters including welding method, amount and concentration of energy input, weldability of the base material, filler and flux material, design of the joint and the interactions between all these factors. Different types of welding defects e.g., cracks, slag inclusion, gas inclusions (porosity), non-metallic inclusions, lack of fusion, incomplete penetration, lamellar tearing, overlap and undercut may be induced during welding process. These defects may promote the failure of the component and lead to unexpected incidents and accidents. To ensure the quality of weld, nondestructive testing (NDT) methods are commonly used. The entire volume of the weld joints was scanned using ultrasonic shear wave transducer to assess the integrity of the weld as well as the quality of steel structure. In this study, 84 butt weld joints of carbon steel made from varying thickness sheets were investigated and among them 13 joints were rejected. Total examined weld length was 19.6 m and the amount of defects in this tested length was 907 mm. In this work, it was found that 15.5% of the total number of joints contains defect and in terms of length the amount of defect was approximately 4.6% of the total inspected length. The aim of this study is to improve reliability of Ultrasonic Testing method to identify discontinuities and defects in weld joints in steel structure to reduce the risk of structural incidents and accidents. This will help to attain sustainability in both the steel structure manufacturing industry and infrastructure manufactured from steel.

Key-Words / Index Term :
Weldability, Weld defects, Nondestructive testing, Steel structure, Ultrasonic testing

References :
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