1.Understanding the C-Scan Image:

C-Scan: A C-scan is a two-dimensional image that shows the ultrasonic response across the entire scanned area.

Grayscale or Color: Indicates variations in signal intensity, typically represented by different shades of gray or colors.

2.Identifying Key Features:

Uniformity: Observe the overall uniformity of the image to identify any abnormal areas.

Defect Areas: Look for nonuniform regions which could indicate defects or foreign objects.

3.Detailed Analysis:

Marked Points: The image marks points “A1”, “A2”, and “A3”, corresponding to the positions of the A-scan images.

Comparative Analysis: Compare the C-scan image with the A-scan images to confirm changes in signal intensity at specific locations.

Example Analysis

1.A1:

A-Scan Image: Shows multiple peaks, including initial pulse and bottom reflection.

C-Scan Image: Corresponding position has higher signal intensity, suggesting potential internal defects.

2.A2:

A-Scan Image: Shows fewer peaks, indicating this location is relatively uniform.

C-Scan Image: Corresponding position has lower signal intensity, indicating a more uniform region.

3.A3:

A-Scan Image: Shows a clear bottom reflection without additional peaks.

C-Scan Image: Corresponding position has uniform signal intensity, indicating no significant defects.

Summary

A-Scan: Used for detailed analysis of ultrasonic signals at specific locations, helping to identify internal defects.C-Scan: Provides an overall view, aiding in the rapid identification of potentially defective areas.

Combined Analysis: By comparing A-scan and C-scan images, one can accurately identify and locate defects.

Through this comprehensive analysis method, SAM data can be effectively utilized for material inspection and quality control.