Accession Number:

AD0730678

Title:

The Use of Pre-Cracked Charpy Specimens to Determine Dynamic Fracture Toughness.

Descriptive Note:

Technical rept.,

Corporate Author:

CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

27.0

Abstract:

The use of an instrumented impact hammer on pre-cracked Charpy V specimens has led to an inexpensive method for determining the dynamic fracture toughness, K sub Id. Measurements were made on A-533 steel over a range of temperature -125 to 75F at a loading rate K clot approximately equal to 1,000,000 ksi in. to the 12 powersec. The data were found to be in excellent agreement with those obtained by other workers on much larger specimens. Analysis of the data leads to a new method for estimating the NDT temperature, which may be of practical value in nuclear reactor surveillance programs. Author

Subject Categories:

  • Metallurgy and Metallography
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE