Accession Number : AD0674880

Title :   INVESTIGATION OF HIGH STRENGTH STEELS UNDER HISTORY PROGRAM FATIGUE, PART I.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK DEPT OF CIVIL ENGINEERING AND ENGINEERING MECHANICS

Personal Author(s) : Branger,J. ; Ronay,M.

Report Date : FEB 1968

Pagination or Media Count : 129

Abstract : As the first high strength steel in a long range research program on the fatigue performance of such steels in aircraft structures a 0.15% C, 1.12% Cr, 3.69% Ni and 0.67% Mo steel of tempered massive martensite structure (sigma sub U = 120-125 kp/sq mm) was investigated in a six bar fatigue test bed under a History Program loading using both notched and unnotched fatigue specimens. The applied fatigue program simulates the service history of the VENOM fighter plane under the operational and gust conditions of Switzerland. (Author)

Descriptors :   (*STEEL, FATIGUE(MECHANICS)), AIRFRAMES, CHROMIUM ALLOYS, NICKEL ALLOYS, MOLYBDENUM ALLOYS, CARBON ALLOYS, MARTENSITE, MICROSTRUCTURE, CRACKS, NONDESTRUCTIVE TESTING, MICROSCOPY, JET FIGHTERS

Subject Categories : Attack and Fighter Aircraft
      Properties of Metals and Alloys
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE