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),
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 15, 1967
- Accession Number
- AD0833843
Entities
People
- Bohdan Jancelewicz
Organizations
- National Air and Space Intelligence Center