5.What are the tests for checking the weld joint and explain?

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Tests for checking weld joint and their explanation.

Visual inspection - checking for cracks, porosity, undercut, etc.
Dye penetrant test - applying dye to the weld and checking for leaks
Radiographic test - using X-rays or gamma rays to check for internal defects
Ultrasonic test - using high-frequency sound waves to detect flaws
Magnetic particle test - using magnetic fields to detect surface cracks
Tensile test - applying tension to the weld to check its strength
Bend test - bending the weld to check for cracks or defects
Hardness test - measuring the hardness of the weld to check for proper heat treatment
Macro etch test - examining the cross-section of the weld under a microscope
Acoustic emission test - detecting high-frequency signals emitted during welding
Leak test - checking for leaks in the weld using air or water pressure

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