NON-DESTRUCTIVE WELDING INVESTIGATION. Quarterly Report No. 2, November 24, 1961 to February 8, 1962

Technical Report · Thu Feb 01 04:00:00 EST 1962

OSTI ID:4777467

The rolled steel in thicknesses of 50, 100, 200 and 300 mm. intended for the test pieces to be welding was subjected to an extensive investigation. In addition to ultrasonic research with both straight and angular probers, a magnetic investigation was also carried out on the sectional surfaces. It was noted that one of the plates (200mm. thick) had rolling defects, the greatest of which had a length of at least 25 mm. in one direction. The disturbing influence of these discontinuities in the material on the noise transmission when using an angular prober was also investigated. A difference of at least 4.5 db was found on one of the points selected for funther study. The impression is that this sheet forms a particularly good study object in the condition found, in comparison with the other sheets which show no great divergences, and that later on the influence of the impurities in the material and the rolling defects on the measuring sensitivity can thus be studied in the course of the next ultrasonic investigation. Furthermore, the influence of absorption on the measuring sensitivity was checked by means of tests on 200- and 300-mm. thick material. (auth)

• Research Organization: Rontgen Technische Dienst N.V., Rotterdam
• NSA Number: NSA-16-029358
• OSTI ID: 4777467
• Report Number(s): EURAEC-244
• Country of Publication: United States
• Language: English

Related Subjects

ABSORPTION
DEFECTS
DETECTION
IMPURITIES
MAGNETISM
MATERIALS TESTING
METALS, CERAMICS, AND OTHER MATERIALS
ROLLING
SENSITIVITY
SHEETS
STEELS
ULTRASONICS
WELDS