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) : Server,W. L. ; Tetelman,Alan S.

Report Date : JUL 1971

Pagination or Media Count : 27

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 1/2 power)/sec. 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)

Descriptors :   (*STEEL, FRACTURE(MECHANICS)), (*FRACTURE(MECHANICS), IMPACT TESTS), TOUGHNESS, TEST METHODS, RADIATION DAMAGE, NEUTRON REACTIONS, NUCLEAR REACTORS

Subject Categories : Metallurgy and Metallography
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE