Accession Number : AD0670171

Title :   DYNAMIC TEMPERATURE MEASUREMENT DURING THE AXIAL IMPACT OF ANNEALED ALUMINUM TUBES,

Corporate Author : KENTUCKY UNIV LEXINGTON DEPT OF ENGINEERING MECHANICS

Personal Author(s) : Taylor,Benson T. , Jr

Report Date : APR 1968

Pagination or Media Count : 70

Abstract : Experimental temperature data produced in annealed aluminum tubes during an axial impact of 0.005 seconds duration are presented for strains of magnitudes from 50 to 5,000 microns in/in. The results approximately agree with the energy equation reported herein, but the data have a large variation which is attributed to impacts which are not perfectly axial. The temperature associated with the elastic volume changes which occur during plastic deformation is shown to be large compared to the plastic work. The stored energy of the dynamic impact is shown to be of the same order of magnitude as the 'static' stored energy of cold work for annealed aluminum. The test specimen consisted of a short soft section which is ten inches long glued to a long hard aluminum tube of the same cross-section. This type specimen produced a more uniform strain field and permitted heat conduction to be neglected during impact. (Author)

Descriptors :   (*ALUMINUM, MECHANICAL PROPERTIES), PIPES, STRAIN(MECHANICS), IMPACT, HIGH TEMPERATURE, DEFORMATION, CREEP, INTENSITY, ANNEALING, COMPRESSIVE PROPERTIES, STRAIN GAGES, BENDING, STRESSES, THERMOCOUPLES, MEASUREMENT

Subject Categories : Metallurgy and Metallography
      Mechanics
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE