How does the probe angle affect the results in phased array ultrasonic testing?

The probe angle significantly influences the geometry of the sound beam in phased array ultrasonic testing. When a probe is angled, the direction in which the ultrasonic waves propagate changes, which in turn affects how the waves interact with the material being tested. This alteration in the beam geometry can lead to variations in the sensitivity to detect flaws, the depth of penetration, and the overall inspection range.

By adjusting the probe angle, the technician can optimize the beam's interaction with defects at different orientations and depths, which is crucial in obtaining accurate and reliable results. Therefore, understanding how the probe angle modifies the sound beam's path is essential for effective testing and ensuring that any potential flaws within the material can be adequately identified. This understanding aids in maximizing the effectiveness of phased array testing in various applications.