![]() ![]() For example, a large aperture (element pitch times the number of elements) combined with a high frequency tends to result in better focalization at a deeper position in the part, while a smaller aperture combined with a lower frequency tends to produce better focalization in the near-surface area. ![]() Inspectors need to find the best combination of these characteristics to suit the type of application, the characteristics of the part to inspect, and the targeted region of interest in the part. The performance of a given probe depends on the combination of the following characteristics: Since TFM obeys the same principles of physics as PAUT, which probe you choose is equally important. With standard phased array ultrasonic testing (PAUT), the probe choice is crucial to the success of your inspection. Here are the 4 essentials for building a TFM strategy for weld inspection that complies with this code:
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