PDF《PROGRESS》

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. PROGRESS REPORT ' ,,

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(Proiect SR-1 10) on REPRODUCIBILITY OF KEYHOLE CHARPY AND TEAR TEST DATA ON ,,

, ,. LABORATORY HEATS OF SEMIKILLED STEEL by :. R. H. FRAZIER,F. W. BOULGER and J. 'W.,.SPRETNAK Battelle Memorial Ins fifute : "" ,.. . ,,

,'. J, .,. : Trmsmht,d through NATIONAL RESiA17CH C0UNW3 COMMllTEE ON SHIP STEEL ! ., ' Division of Engineering and Indu,t,i.1 Research Nat;

onal Academy of S&nces N.,ic,,

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e, rch 'Ounci[ Washington, D. C. ,. Ssc - fn FEBRUARY 7,.1955 ...――――. . .- SHIPSTRUCTURE COMMITTEE MEMBER AGENCIES: u UREAU OF SHIPS. DCPT. o? MAW MILITARY SEA TRAt4sPOR7AT10N SKEVICK. Dw'r. OF NAVY UNITED STATES COAST GUARD, TREAWIRY DWT. MARITIME ADMINISTRATION. DEPT. or COMMKRCC AMERICAN BUREAU OF SHlwlNa ADDRESS CORRESPONDENCE TO: SECRETARY SHIP STRUCTURE COMMITTEE U. S. COAST GUARD HEADQUARTERS WASHINGTON 25. D. C. February 7,1955 Dear Sir: As part of its research program related to the im- provement of hull structures of ships, the Ship Structure Committee is sponsoring an investigation of the influence of chemical composition and deoxidation on the notched bar properties of ship plate steels at Battelle Memorial In- ., ~.,,

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~prk.~pns.=,o< >h~s...wo~~wasas PX.9$eP.t.9g...-.j . . . . . . ., at the Symposium on Effect of-Temperature on' the 13r"ittleBe- havior of Metals with Particular Reference to Low Temperatures held at the annual meeting of the &merican Society foresting Materials, Atlantic City, June 28--JO, 1953. This paper, entitled "Repro&ucibility of Keyhole Charpy and Tear-Test Data on Laboratory Heats of Semiskilled Steel" by R. H. Frazier, J. '{~.Spretnak and F. M. Boulger, constitutes Part I of the attached report, SSC-83, the progress report on the project. Part II of the report describes the results of later calcula- tions. The project is being conducted with the advisory assistance of the Committee on Ship Steel of"' the National Academy of Sciences-National Research Council. Comments concerning this report m'fi solicited and should be addressed to the Secretary- Ship Structure Committee. This report is being distributed to those individuals and agencies associated with and interested in the work of the Ship Structure Committee. Yours sincerely, ~:: ::,::: A-.;

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