Which presentation provides a plan view of the part outline and defects?

Which presentation provides a plan view of the part outline and defects?

• A. An A scan presentation
• B. An B scan presentation
• C. A C scan presentation
• D. Automatic read-out equipment

Answer: (C)

In ultrasonic testing, a plan view of the part outline and defects is created by scanning across the surface and compiling the signals into a map of the surface plane. This is the C-scan presentation. It effectively stacks the echoes from across the area to show where defects lie relative to the part’s outline, giving you a top-down view of the scanned region. The A-scan is a one-dimensional display of echo amplitude versus time, which provides depth information along a single line but doesn’t map across a surface. The B-scan adds a second dimension to show a cross-sectional slice, giving a two-dimensional image of a depth profile along the scan path. Automatic read-out equipment refers to devices that interpret or display signals, but it isn’t the imaging mode itself.

In ultrasonic testing, a plan view of the part outline and defects is created by scanning across the surface and compiling the signals into a map of the surface plane. This is the C-scan presentation. It effectively stacks the echoes from across the area to show where defects lie relative to the part’s outline, giving you a top-down view of the scanned region.

The A-scan is a one-dimensional display of echo amplitude versus time, which provides depth information along a single line but doesn’t map across a surface. The B-scan adds a second dimension to show a cross-sectional slice, giving a two-dimensional image of a depth profile along the scan path. Automatic read-out equipment refers to devices that interpret or display signals, but it isn’t the imaging mode itself.