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What is the maximum frequency used in the ultrasonic inspection?(a) 35 MHz(b) 40 MHz(c) 45 MHz(d) 50 MHzI had been asked this question in my homework.Question is from Ultrasonic Inspection topic in chapter Non Destructive Techniques of Casting-Forming-Welding II

Answer»

Correct answer is (d) 50 MHz

The BEST EXPLANATION: The maximum frequency that MAY be needed for an ultrasonic inspection is AROUND 50 MHz. Such frequencies make it easy for the devices to detect the flaws.



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