Eddy Current Testing Services

Advantages of Eddy Current Testing

1. Sensitive to Small Cracks and Other Defects: ET is highly sensitive to small cracks, especially those perpendicular to the coil movement.

2. Versatile for Various Applications: It’s used for crack detection, material thickness measurements, conductivity measurements for material identification, and heat damage detection.

3. Immediate Results: The results are immediate and can be displayed in real-time, aiding quick decision-making.

4. Non-Contact Method: ECT does not require physical contact with the material, making it suitable for delicate surfaces and automated scanning systems.

5. Can Inspect Through Coatings: Thin non-conductive coatings or paint do not need to be removed as ET can inspect through them.

6. No Safety Hazards: Unlike radiographic testing, ET does not use hazardous radiation.

7. Minimal Surface Preparation Required: It requires less surface preparation compared to methods like dye penetrant or ultrasonic testing.

Disadvantages of Eddy Current Testing

1. Limited Penetration Depth: ET is mainly used for surface and near-surface defect detection and has limited depth penetration.

2. Conductivity Requirements: It’s only applicable to conductive materials, limiting its use on non-metals.

3. Surface Condition Effects: The method is sensitive to the surface condition of the material, and rough or irregular surfaces can interfere with readings.

4. Coupling Consistency Needed: Inconsistent probe contact and liftoff can affect the reliability of results.

5. Variability in Material Properties: Variations in material properties like conductivity and permeability can affect results.

6. Risk of Electromagnetic Interference: ET can be susceptible to electromagnetic interference from external sources.