Accession Number : AD0653469

Title :   SECOND-ORDER ELONGATION OF METAL TUBES IN CYCLIC TORSION.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV NEW YORK INST FOR THE STUDY OF FATIGUE AND RELIABILITY

Personal Author(s) : Ronay,Maria

Report Date : MAY 1967

Pagination or Media Count : 24

Abstract : Aluminum tubes of different wall-thickness are subjected to reversed cyclic torsion of the same amplitude superimposed on the same axial tensile stress. The observed strong dependence on wall thickness of the axial extension accumulating with the number of torsion cycles ('cyclic creep') implies that this phenomenon is due to the amplification, by superimposed tension, of accumulating second-order strain increments. (Author)

Descriptors :   (*ALUMINUM, STRESSES), PIPES, THICKNESS, TORSION, TENSILE PROPERTIES, STRAIN(MECHANICS), CREEP

Subject Categories : Metallurgy and Metallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE