Edge Echo Evaluation
Edge echo evaluation is a non-destructive testing method that uses reflections at the edges of a defect to determine its size and location. It helps in locating and sizing planar defects.
Physical-Chemical Action Mechanism
Edge echo evaluation is based on the reflections of the ultrasonic signal at the edges of a defect. These reflections are called edges and provide information about the size and location of the defect.
Metallurgical Relevance & Welding Risks
In weld inspection, edge echo evaluation can help detect smaller planar defects or cracks. However, misinterpretation can lead to inaccurate conclusions and potential misunderstandings in the inspection report.
Workshop Practice & Instructions
To perform edge echo evaluation successfully, the following steps should be observed:
1. Use a high-resolution ultrasonic device with high frequency.
2. Ensure the test setup and the material surface are clean.
3. Choose the correct probe angle and optimal sound direction.
4. Analyze the echo edges carefully and compare them with reference data or standards.