Fatigue Behavior of Long and Short Cracks in Wrought and Powder Aluminum Alloys.
Abstract
The fatigue behavior of short cracks, which are small compared to the scale of the microstructure, small compared to the scale of local plasticity or simply physically small (i.e., approx. 1 mm), must be considered as one of the major factors limiting the application of defect-tolerant fatigue design for airframe and engine components. Accordingly, the current program is aimed at identifying factors which govern the growth of such short cracks (in contrast to long cracks) in a series of commercial aluminum alloys, with specific reference to behavior at near-threshold levels (below approx. 0.100000 mm/cycle). A summary of the research performed during the past six months is described, together with a review of future work.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 15, 1985
- Accession Number
- ADA166466
Entities
People
- Robert O. Ritchie
Organizations
- University of California, Berkeley