Accession Number : AD0616034

Title :   EFFECT OF EXTERNAL GEOMETRY ON FATIGUE BEHAVIOR OF WELDED JOINTS.

Descriptive Note : Illinois cooperative highway research program series no. 35,

Corporate Author : ILLINOIS UNIV URBANA DEPT OF CIVIL ENGINEERING

Personal Author(s) : Sanders,W. W. ,Jr. ; derecho,A. T. ; Munse,W. H.

Report Date : 1964

Pagination or Media Count : 8

Abstract : Fatigue tests were conducted on simulated butt-welded specimens of ordinary structural grade steel with the simulated 'weld reinforcement' machined from base metal. The profile of the weld reinforcement was controlled by varying the radius at the toe of the weld and the flank angle between the base metal and the reinforcement. The specimens were tested under zero-totension and tension-to-compression stress cycles. Also included are studies of the geometry of transverse butt-welded fatigue specimens in high-strength quenchedand-tempered steels. Each specimen fracture was examined to determine the external geometrical factors which are critical in the determination of fatigue behavior. Examinations were also conducted on buttwelded joints of several grades of steel after testing under fatigue loadings. Measurements of the parameters characterizing the weld reinforcement geometry at the point of fatigue fracture initiation, including the radius at the toe of the weld, R, the flank angle, the height, the width, and the area of the reinforcement, were made by means of plaster casts taken of the weld reinforcement prior to the testing of the specimens.

Descriptors :   (*WELDS, FATIGUE(MECHANICS)), (*JOINTS, WELDS), STEEL, GEOMETRY

Distribution Statement : APPROVED FOR PUBLIC RELEASE