Location

Thousand Oaks, CA

Start Date

1975 12:00 AM

Description

The ultrasonic pulse echo technique is a highly sensitive nondestructive method for detecting small defects within the bulk of a structure. The technique is capable of reliably finding small volumetric defects when the defect size is approximately 0.030 inches in diameter and the specimen thicknesses are not too great. If the distance between the transducer and the defect is large, greater than 2 near field distances, the minimum value of volumetric flaw sizes that can be reliably detected rises considerably. For 6-8 inch thick plates, it is not too surprising to occasionally miss volumetric defects such as slag inclusions of considerable length.

Book Title

Proceedings of the ARPA/AFML Review of Quantitative NDE

Chapter

4. Ultrasonic Scattering 2

Pages

129-146

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Defect Characterization by Spatial Distribution of Ultrasonic Scattered Energy

Thousand Oaks, CA

The ultrasonic pulse echo technique is a highly sensitive nondestructive method for detecting small defects within the bulk of a structure. The technique is capable of reliably finding small volumetric defects when the defect size is approximately 0.030 inches in diameter and the specimen thicknesses are not too great. If the distance between the transducer and the defect is large, greater than 2 near field distances, the minimum value of volumetric flaw sizes that can be reliably detected rises considerably. For 6-8 inch thick plates, it is not too surprising to occasionally miss volumetric defects such as slag inclusions of considerable length.