Introduction
• NDT =Testing without damaging the
component.
• Vital for safety, reliability, and cost-saving.
• Common in aerospace, oil & gas,
manufacturing.
3.
Objectives of NDT
•Detect defects early and accurately.
• Ensure safety and integrity of components.
• Avoid part damage or downtime.
• Cost-effective quality control.
4.
Common NDT Methods
•Visual Testing (VT)
• Ultrasonic Testing (UT)
• Radiographic Testing (RT)
• Magnetic Particle Testing (MT)
• Dye Penetrant Testing (PT)
• Eddy Current Testing (ET)
5.
Ultrasonic & RadiographicTesting
• UT: High-frequency sound waves to detect
internal flaws.
• - Deep penetration, portable, real-time.
• RT: X-ray/gamma ray imaging of internal
structures.
• - Precise, but requires radiation safety.
6.
Surface & Electromagnetic
Methods
•Dye Penetrant Testing (PT): Surface cracks,
simple.
• Magnetic Particle Testing (MT):
Surface/subsurface in ferromagnetic
materials.
• Eddy Current Testing (ET): Electrical
conductivity, fast for surface defects.
7.
Applications & Limitations
•Applications: Aerospace, pipelines, welds,
castings.
• Advantages: No damage, early detection, safer
systems.
• Limitations: Needs skilled operator, cost varies
by method.
8.
Conclusion
• NDT ensuressafety and quality without
compromising material.
• Essential in critical industries.
• Questions?
