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.
