What aspect of the sound beam does the probe angle primarily influence during testing?

The probe angle plays a crucial role in influencing the angle of incidence at which the sound beam strikes the material being tested. This angle of incidence affects how the ultrasonic waves interact with the material, which can significantly impact the results of the inspection.

When the probe is angled, the sound waves are directed towards the material surface at a specific angle, which can enhance or reduce the reflection and refraction of the waves depending on the material properties and any flaws present. By controlling the probe angle, the tester can optimize the detection of certain types of discontinuities or enhance the sensitivity of the examination.

Understanding this relationship is fundamental in phased array technology, as proper angling allows for better imaging and characterization of defects. This function of the probe angle is essential for ensuring accurate assessments during ultrasonic testing.