Question

An advantage of phased array testing is that:

A) a single probe and wedge combination can be used to generate a variety of angles and focal ranges
B) it does not require couplant even on very rough surfaces
C) it is simple to use and does not require any additional training for Level 2 personnel
D) it can be used in any industry as long as a complementary test method is used to get coverage of the inside and outside surfaces

Answer 1

Phased array testing allows a variety of angles and focal ranges with a single probe and wedge, using constructive interference of multiple sources to scan and create detailed internal structure images. The correct answer is A) a single probe and wedge combination can be used to generate a variety of angles and focal ranges.

Step-by-step explanation:

An advantage of phased array testing is that a single probe and wedge combination can be used to generate a variety of angles and focal ranges. This method involves having multiple ultrasound sources in the probe's head, which are phased to interfere constructively in an adjustable direction, allowing for the scanning of an area of interest with directional beams. Echoes are measured as a function of position as well as depth, and a computer constructs an image that reveals the shape and density of internal structures.

Phased array testing is beneficial because it enables detailed inspections with greater flexibility and coverage without the need for multiple probes. The correct answer is A) a single probe and wedge combination can be used to generate a variety of angles and focal ranges.