Ultrasonic Testing - Applications and Advantages of Ultrasonic NDT in Industry
Ultrasonic testing is a non-destructive testing method that is used commonly for - Detecting cracks, defects and faults in a test piece; - Measuring the dimensions of a test piece; - Understanding the nature or character of a material; How is the test carried out? The testing unit or system consists of a receiver, transducer, and a display unit. The receiver or pulse is the unit that produces electrical pulses. The transducer then produces ultrasonic energy in high frequency. This sound energy or wave passes through the test piece. If the material has no-fault, it will behave as a standard piece – however, when there is a crack, fault, or break in between, the wave is intercepted by this fault line from where the wave reflects. This reflected wave or echo is then converted by the transducer into an electrical signal. This electrical signal gets displayed on the screen. The duration or period from wave generation to the echo is now displayed on the sc