Open AccessImprovement of Weld Joint Strength by Applying Random Vibrations Along With External Magnetic Field
Author(s) -
Suresh Chitturi,
Chowdary K. Mohana Krishna,
Munmun Bhaumik,
Dhanunjay Kumar Ammisetti
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/998/1/012035
Subject(s) - welding , materials science , residual stress , heat affected zone , arc welding , fusion welding , vibration , metallurgy , composite material , joint (building) , ultimate tensile strength , structural engineering , engineering , acoustics , physics
Welding is a metal joining process induces high residual stresses. These are strongly influencing the mechanical properties of weldment. In earlier days heat treatment and shot peening techniques were used to relieve these stresses. Due to the time consuming of these processes, in this research work we have applied random vibrations to relive the residual stresses to improve mechanical properties. Along with that, welding arc may get affected by magnetic field during welding. This leads to arc instability which is responsible for welding defects like lack of fusion, porosity. These reduce the quality and strength of weld. To overcome this, arc spattering with external magnetic field need to be reduced. In this research work, a setup has been designed for vibration assisted welding along with external magnetic field set up to improve the mechanical properties of Mild Steel weld joints by means of hardness and ultimate tensile strength. Welding had been performed with and without these setups. After performing welding work pieces have been tested both welding conditions and results have been compared.