Question

Which of the following is \textbf{not a non-destructive test?}

• A. Magnaflux method
• B. Radiography
• C. Ultrasonic testing
• D. Fatigue testing

Hint:

All non-destructive tests preserve the usability of the test object. If a test involves breaking, fracturing, or damaging the material to determine its properties, it's a destructive test.

Answer 1

The Correct Option is D

Non-destructive testing (NDT) methods allow inspection and evaluation of materials or components without causing damage. - Magnaflux method is a magnetic particle inspection used for detecting surface and near-surface defects in ferromagnetic materials. - Radiography uses X-rays or gamma rays to view internal features of components. - Ultrasonic testing uses high-frequency sound waves to detect internal flaws. Fatigue testing, on the other hand, involves subjecting a specimen to repeated cyclic loading until failure. Hence, it causes damage and ultimately breaks the material, making it a destructive test.