Non-Destructive Testing (NDT) Methods – Training Options

Visual Testing (VT)

• Basic inspection with the naked eye or tools like magnifiers, borescopes.

• Ideal for detecting surface defects such as cracks, corrosion, or misalignment.

Ultrasonic Testing (UT)

• Uses high-frequency sound waves to detect internal flaws or thickness.

• Commonly used in weld inspections, castings, and forgings.

Radiographic Testing (RT)

• Uses X-rays or gamma rays to detect internal discontinuities.

• Provides a permanent image (film or digital) of weld integrity and voids.

Magnetic Particle Testing (MPT / MPI)

• Detects surface and near-surface discontinuities in ferromagnetic materials.

• Useful for cracks, seams, or inclusions in welds and castings.

Radiographic Testing (RT)

• Surface-level defect detection method using dye and developer.

• Effective for non-magnetic materials like stainless steels and aluminum.

Eddy Current Testing (ET)

• Uses electromagnetic induction to detect surface and near-surface flaws.

• Often used in aerospace, tube inspections, and conductive materials.

Acoustic Emission Testing (AET)

• Detects short bursts of stress waves emitted by sudden crack growth or deformation.

• Useful for real-time monitoring of pressure vessels and structural materials.

Leak Testing (LT)

• Detects leakage in pressure vessels, pipelines, and containers.

• Methods include soap bubble, pressure drop, and helium leak tests.