Accession Number : AD0833843

Title :   AN INQUIRY INTO THE EFFECT OF PLASTIC DEFORMATION ON THE FATIGUE LIFE OF DURALUMINUM SHEETS WITH NOTCHED HOLES (BADANIA WPLYWU ZGNIOTU PLASTYCZNEGO NA TRWALOSC ZMECZENIOWA DURALOWYCH BLACH Z KARBEM),

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Jancelewicz, Bohdan

Report Date : 15 SEP 1967

Pagination or Media Count : 22

Abstract : The investigation described concerns the fatigue life properties of 1 mm and 2 mm PA-7T specimens under constant amplitude loads. An adequately calibrated 3 mm central hole was provided to act as a stress concentrator. A higher increase of the fatigue life was observed for narrow specimens and lower stress levels. For wider specimens and higher stress levels this increase was distinctly lower. In the range investigated, the increase of the fatigue life as a function of plastic deformation of the diameter of the hole was found to be linear or quasi-linear. (Author)

Descriptors :   (*ALUMINUM ALLOYS, FATIGUE(MECHANICS)), SHEETS, DEFORMATION, STRESSES, NOTCH SENSITIVITY, LOADS(FORCES), PLASTIC PROPERTIES.

Subject Categories : Metallurgy and Metallography
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE