Abstract:
Nondestructive testing methods are that used widely in industry and technology so to test material and equipment to make sure that they are proper and secure.
In this work three samples from steel, carbon steel and aluminum were subjected to same fraction force. The damages produced were tested by ultrasound and magnetic particles. The fraction length obtained by magnetic particle and ultrasound give the same result. Where the length in the aluminum, steel and carbon steel defects are 13.6cm, 8.3cm and 4.3cm respectively. Whoever the depth of the defect was detected by ultrasound only and have results 8cm, 5cm and 2cm respectively. Other experiments were done to determine the thicknesses of disc and cube. The tests give apparent thickness of 3.9cm and 3.0cm respectively. These apparent thicknesses were used to find the real speed of sound for the disc and cube. The calculation shows that the speed is 4431m/s and 4470m/s which are the speed of sound for nickel.
