What is a benefit of using multiple angles in phased array testing?

Using multiple angles in phased array testing is beneficial because it can identify defects that may be missed at a single angle. This multi-angle approach provides a more comprehensive view of the test object by allowing the ultrasonic waves to interact with the material from various directions. Different angles can reveal different types of defects based on their orientation and size. For instance, certain flaws may only be detectable when sound waves approach them from specific angles, while others could be obscured or undetected entirely from just one viewpoint. Therefore, employing multiple angles significantly enhances the likelihood of identifying a wide range of potential defects, leading to more accurate and reliable inspections.