What type of view does a B-scan provide during phased array testing?

A B-scan provides a two-dimensional view of echo amplitudes, which means it displays the amplitude of the reflected sound waves from the inspected material over time or depth. This type of imaging is integral in ultrasonic testing as it allows the operator to visualize the internal structures of a material, identify flaws, and assess their size and position based on the reflected signal strength and time it takes for the echoes to return.

The B-scan typically shows these reflected amplitudes in a format that reveals the vertical axis representing depth or time, while the horizontal axis represents the scanning position. This visual representation allows for a comprehensive analysis of the internal structure being tested, making it easier to detect anomalies such as cracks or inclusions.

Other options, while they may imply different types of visual representations or information gathering, do not accurately describe the B-scan's functionality or output. The focus on echo amplitudes clearly positions the B-scan as a crucial tool in phased array testing for analyzing material integrity.