CAUSES OF CLEAVAGE FRACTURE IN SHIP PLATE: FLAT PLATE TESTS.

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Abstract:

The principal materials used in the tests were three lots of semikilled, hull quality steels. The specimens in the principal program of tests were tested in tension in widths of 72, 48, 24, and 12 in. The specimens all contained a narrow, central, transverse slot having a length of one-fourth of the plate width. Tests were made at each of a number of temperatures in order to determine the range of temperature within which the mode of failure changed from a ductile, shear type to a brittle, cleavage type. In these tests, observations were made to determine the maximum load, failure load, strain distribution across the faces of the plates over several gage lengths, energy absorbed to maximum load, the mode of fracture, and the reduction of thickness near the break. Whenever observations could be made, the load at the development of cracks was also recorded.

Author(s):
Davis, Harmer E. ; Troxell, G. E. ; Boodberg, A. ; Parker, Earl R.
Author Organization(s):
CALIFORNIA UNIV BERKELEY
Descriptive Note:
Technical rept.
Supplementary Note:
See also AD-636 746.
Pagination:
0181

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
NObs-31222, NObs-34231
Project Number(s):
SR-92, NRC-92A
 Subject Terms
Communities of Interest:
Ground and Sea Platforms
Descriptor(s):
(*SHIP PLATES, *FRACTURE(MECHANICS)), SHIP HULLS, STEEL, TRANSITION TEMPERATURE, FAILURE(MECHANICS), HARDNESS, EXPERIMENTAL DATA, LOADS(FORCES)
Field(s)/Group(s):
Metallurgy and Metallography, Marine Engineering
Report Date:
1946 Apr 01