What type of ultrasonic inspection uses many different angles at the same time?

What type of ultrasonic inspection uses many different angles at the same time?

• A. Phased array inspection
• B. Time-of-flight diffraction
• C. Pulse-echo inspection
• D. Through-transmission inspection

Answer: (A)

Phased-array ultrasonic inspection enables steering and focusing one beam at multiple angles without moving the probe. By driving many tiny elements with precise time delays, the transmitted beam can be directed and focused in different directions, so you can examine a region from several angles simultaneously or in rapid sequence. This electronic control makes it possible to detect flaws that may be oriented differently or hidden behind complex geometry, which is why it’s the method described by the question. Other methods rely on a fixed geometry: a single-element pulsed-echo looks along one path; time-of-flight diffraction uses specific paths to locate and size defects rather than broad-angle coverage; through-transmission uses separate transmitter and receiver and isn’t about scanning from multiple angles.

Phased-array ultrasonic inspection enables steering and focusing one beam at multiple angles without moving the probe. By driving many tiny elements with precise time delays, the transmitted beam can be directed and focused in different directions, so you can examine a region from several angles simultaneously or in rapid sequence. This electronic control makes it possible to detect flaws that may be oriented differently or hidden behind complex geometry, which is why it’s the method described by the question.

Other methods rely on a fixed geometry: a single-element pulsed-echo looks along one path; time-of-flight diffraction uses specific paths to locate and size defects rather than broad-angle coverage; through-transmission uses separate transmitter and receiver and isn’t about scanning from multiple angles.