EFFECT OF TENSION-COMPRESSION CYLING ON FATIGUE CRACK GROWTH IN HIGH-STRENGTH ALLOYS
Virtually all of the fatigue crack propagation data reported in the literature for structural alloys are generated under simple zero-tension cycling. The direct application of this data to problems involving large welded structures subjected to operating stress cycles approaching fully-reversed tension-compression is questionable. The present study shows that the compression portion of fully-reversed tension-compression cycling can contribute substantially to fatigue crack growth rates in plate-thickness, medium-to-high-strength alloys. Data from several alloys show a 50 percent increase in fatigue crack growth rates due to tension-compression cycling. The implications of these findings and methods for applying the results of this study are discussed. (Author)
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Corporate Authors:
Naval Research Laboratory
Stennis Space Center, MS United States 39529-5004 -
Authors:
- Crooker, T W
- Publication Date: 1971-1-4
Media Info
- Pagination: 11 p.
Subject/Index Terms
- TRT Terms: Cracking; Fatigue cracking; Materials science; Repeated loads; Stresses; Structural analysis; Welds
- Uncontrolled Terms: Crack propagation
- Old TRIS Terms: Cyclic fatigue; Weld stresses
- Subject Areas: Marine Transportation; Materials;
Filing Info
- Accession Number: 00016684
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NRL-7220
- Files: TRIS
- Created Date: Aug 27 1973 12:00AM