WELDING TESTS

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• Q1: Name some Welding Tests.
  Ans: The types of welding tests are as follows:

  • ➔ Destructive Tests
    • ➔ Tensile Test
    • ➔ Shear Test
    • ➔ Fatigue Test
  • ➔ Non-destructive Tests
    • ➔ X-ray Test
    • ➔ Gamma Radiography Test
    • ➔ Ultrasonic Test
    • ➔ Stethoscope Test
    • ➔ Magnetic Particle Test
    • ➔ Visual Test
• Q2: State the Destructive Welding Tests.
  Ans: The destructive welding tests are:

  • ➔ Tensile Test
  • ➔ Shear Test
  • ➔ Fatigue Test
• Q3: State the Non-destructive Welding Tests.
  Ans: The non-destructive welding tests are:

  • ➔ X-ray Test
  • ➔ Gamma Radiography Test
  • ➔ Ultrasonic Test
  • ➔ Stethoscope Test
  • ➔ Magnetic Particle Test
  • ➔ Visual Test
• Q4: Briefly Explain Tensile Test of Welding.
  Ans: Tensile test is used to check the strength of a welded joint by applying pulling force until it breaks.
  It helps to determine how much load the weld can تحمل before failure.
• Q5: Briefly Explain Shear Test of Welding.
  Ans: Shear test is used to check the ability of a weld to resist forces that try to slide one part over another.
  The weld is tested until it fails under shear force.
• Q6: Briefly Explain Fatigue Test of Welding.
  Ans: Fatigue test is used to check the strength of a weld under repeated loading and unloading conditions.
  It shows how long the weld can last under cyclic stress.
• Q7: Briefly Explain X-ray Test of Welding.
  Ans: X-ray test is a non-destructive test used to detect internal defects in welding.
  X-rays pass through the weld and show defects like cracks and voids on a film.
• Q8: Briefly Explain Ultrasonic Test of Welding.
  Ans: Ultrasonic test uses high-frequency sound waves to detect internal defects in the weld.
  Reflected waves help in identifying cracks and discontinuities.
• Q9: Briefly Explain Stethoscope Test of Welding.
  Ans: Stethoscope test is used to detect leakage or small cracks by listening to sound produced in the weld.
  It is a simple inspection method.
• Q10: Briefly Explain Visual Test of Welding.
  Ans: Visual test is the simplest method where the weld is inspected by eyes.
  It helps to find surface defects like cracks, porosity, and improper welding.
• Q11: Briefly Explain Gamma Radiographic Test of Welding.
  Ans: Gamma radiographic test uses gamma rays to detect internal defects in welds.
  It is similar to X-ray but uses radioactive sources.
• Q12: Briefly Explain Magnetic Particle Test of Welding.
  Ans: Magnetic particle test is used to detect surface and near-surface defects.
  Magnetic particles are applied, and they gather at defect points making them visible.
• Q13: State the techniques of Oxy-Acetylene Gas Welding.
  Ans: The techniques are:

  • ➔ Forehand (Leftward) Method
  • ➔ Backhand (Rightward) Method
• Q14: Briefly explain the Fore hand/Left Word Method of Oxy-Acetylene Gas Welding.
  Ans: In this method, the torch moves from right to left.
  The flame is directed towards the un-welded part.
  It is suitable for thin metal sheets.
• Q15: Briefly explain the Back hand/Right Word Method of Oxy-Acetylene Gas Welding.
  Ans: In this method, the torch moves from left to right.
  The flame is directed towards the welded part.
  It is suitable for thick metal sections and gives stronger joints.