REVIEW OF NONDESTRUCTIVE TESTING TECHNIQUES FOR DETECTING LACK OF PENETRATION IN ALUMINUM FUSION WELDS,
Abstract
A literature search was made to determine the effectiveness of various nondestructive testing techniques for detecting lack of penetration, i.e., incomplete penetration, in butt joints in aluminum alloys fusion welded from both sides. Under certain conditions, conventional ultrasonic and radiographic techniques may fail to detect such incomplete penetration. Two approaches to radiographic inspection also are reviewed which might be developed into satisfactory inspection techniques for improved reliability in detection of incomplete joint penetration. One approach involves the measurement of radiographic density variations in weld areas. The other approach involves creating a readily detectable flaw which is completely removed when joint penetration is complete. In addition, two approaches to improve ultrasonic inspection are reviewed. One approach is to increase the sensitivity of the test method by increasing the test frequency. The other approach involves creating a readily detectable flaw which is completely removed when complete penetration is obtained, similar to that proposed for radiographic inspection. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 11, 1967
- Accession Number
- AD0661044
Entities
People
- John A. Gibson
Organizations
- Battelle Memorial Institute