Crack detection on ferrous materials such as iron, nickel, cobalt based alloys is easy. Because, all ferro magnetic materials can undergo crack detection using magnetic particle inspection method.
Then, what about other non-ferro magnetic materials? Such as Aluminium, or other non magnetic materials? Is there any NDT method to detect cracks on these materials? Answer is YES, Eddy current testing is one of the effective means of detecting cracks.
The method can detect both surface and subsurface crack without even contacting the surface. Therefore, in many areas eddy current crack detector have replaced magnetic particle testing where speed and accuracy is vital.
For example, eddy current machines detects cracks on railway tracks at steel plants. Also, as the method is contact less, high speed inspections are possible. In addition, unlike ultrasonic testing, no couplant is necessary.
Our Eddy current labs can provide you crack testing services both onsite across India and at our labs in Peenya, Bangalore.