ADVANTAGES OF WELDED JOINT
• Welded joints have high strength compare to their parent metals
• Different materials can be welded
• Welding can be performed anywhere, no need enough clearance
• They give smooth appearance and simplicity in design
• It can be done in any shape and direction
• It can be automated
• Provide complete rigid joint
• Modification and addition of existing structure is easy
• Continuous weld provide fluid for erection of large tightness
• Weld usually have good aesthetic appearance
• Mismatch of holes will never happen in welded joints
• Alternation of joint can easily be made in case of welded connection
• Welded joints are more economical as less labor and less material is required
• The efficiency of welded joint more than the riveted
DISAVANTAGES
• WELDED JOINTS ARE MORE BRITTLE AND THEREFORE THE FATIGUE STRENGHT IS LESS THAN THE MEMBERS JOINED
• DUE TU UNEVEN HEATING AND COOLING OF THE MEMBERS DURING THE WELDING, THE MEMBERS MAY DISTORT RESULTING IN ADDITIONAL SRESS
• SKILLED LABOUR AND ELECTRICITY IS REQUIRED FOR WELDING
• NO PROVISION FOR EXPANSION AND CONTRACTION IS KEPT IN WELDED CONNECTIONS AND THEREFORE, THERE IS POSSIBILITY TO RACK
• THE INSPECTION WORK OF WELDING IS DIFFICUT AND COSTLIER THAN REVETING JOINT
• DEFECTS LIKE INTERNAL AIR POCKET SLAG INCLUSION AND INCOPLETE PENETRATION AREDIFFICUT TO DETECT
• WELDED JOINTS ARE MORE PRONE TO FAILURE DUE TO FATIGUE STRESSED
• WELDED JOINTS ARE OVER RIGID


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