Accession Number : AD0635766
Title : CORRELATION OF LABORATORY TESTS WITH FULL SCALE SHIP PLATE FRACTURE TESTS: ANALYSIS OF TRUE-STRESS TRUE-STRAIN DATA ON PROJECT STEELS.
Descriptive Note : Progress rept.
Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MINERAL INDUSTRIES EXPERIMENT STATION
Personal Author(s) : Klier, E. P. ; Mack,J. O. ; Wagner,F. C. ; Gensamer,M.
Report Date : 21 JUN 1950
Pagination or Media Count : 193
Abstract : The results of a study of the flow and fracture strengths of the project steels was are considered. It appears that the flow- and fracture- strength concept of failure proposed by Ludwik is not adequate to account for the results obtained. The flow properties of the steels was studied as a function of temperature and prestrain. The test results were found to be adequately described by the expression, sigma = sigma sub o delta to the n power, in which sigma and delta are respectively true stress and natural strain, while sigma sub o and n are constants. Sigma sub o has been found to vary regularly with temperature while n has been found to undergo a transition for most of the steels at sufficiently low temperatures. Both sigma sub o and n appear to have fundamental significance and should ultimately be correlated in some manner with the engineering properties of the steels. (Author)
Descriptors : (*SHIP PLATES, STEEL), (*STEEL, FRACTURE(MECHANICS)), SHIP HULLS, RHEOLOGY, STRAIN(MECHANICS), STRESSES, TRANSITION TEMPERATURE, TENSILE PROPERTIES
Subject Categories : Metallurgy and Metallography
Distribution Statement : APPROVED FOR PUBLIC RELEASE