Accession Number:

ADA030188

Title:

Acoustic Emission during Fracture-Toughness Tests of a Nuclear Pressure Vessel Steel and Its Weldment.

Descriptive Note:

Technical rept.,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES DEPT OF MATERIALS

Personal Author(s):

Report Date:

1976-08-01

Pagination or Media Count:

19.0

Abstract:

This paper describes acoustic emission behavior of SA533B steels during fracture toughness tests at 23, -15 and -35 C. Results on AE measurements are summarized and discussed in reference to fractographic observations. Two distinct types of AE signals were recognized by means of waveform, rms voltage changes and amplitude distribution analysis. One type of burst emissions was associated with the formation of equiaxed dimples, while the other type appears to arise from microcracking, tearing, and possibly fracture of inclusions. Author

Subject Categories:

  • Metallurgy and Metallography
  • Fission Reactor Materials

Distribution Statement:

APPROVED FOR PUBLIC RELEASE