Difference between destructive & nondestructive test :-

Destructive test

Destructive test includes methods where the material is broken down in order to determine mechanical properties.

Example: - Tensile test, bend test.

Nondestructive test

Nondestructive testing is a method that does not damage or destroy the material or product being tested.

Example: - Radiographic test, Ultrasonic test, Magnetic particle test, Liquid penetrant test etc.