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The Advanced Split Mandrel Coldworking Process in Various Military Life Extension Applications
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English
Abstract
This paper examines the development of the split mandrel coldworking process. The process is an improvement of the established split sleeve method. While the split sleeve process made coldworking easy and cost-effective for the first time, the advanced split mandrel process is simpler, quicker, less expensive, and adaptable to applications unsuited for the split sleeve process. Military applications of the split mandrel process are discussed and an application case study is presented as an example.
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Authors
Citation
Leon, A., "The Advanced Split Mandrel Coldworking Process in Various Military Life Extension Applications," SAE Technical Paper 983128, 1998, https://doi.org/10.4271/983128.Also In
References
- Yanishevsky, M. Guellec, S. Le, “CF116 Main Lower Wing Skin Enhancement Coupon Test Program,” Unpublished Provisional Copy Department of National Defense Canada
- Phillips Joseph, L. “Fatigue Improvement by Sleeve Coldworking,” SAE Paper 730905 Society of Automotive Engineers 1973
- Wieland, David H. Cutshall, Jon T. Burnside, O. Hal Cardinal, Joseph W. “Analysis of Cold Worked Holes for Structural Life Extension,” Presented at the FAA/NASA Symposium May 6 1994 Southwest Research Institute San Antonio, Texas 1994
- Hermann, R. “Three-Dimensional Stress Distribution Around Cold-Expanded Holes in Aluminum Alloys,” Engineering Fracture Mechanics 1994 48 6 819 835
- Cathey, W. H. Grandt, A.F. Jr. “Fracture Mechanics Consideration of Residual Stresses Introduced by Coldworking Fastener Holes,” Journal of Engineering Materials and Technology 1980 102 85 91
- Finney, J. M. “Cold Expansion and Interference for Extending the Fatigue Life of Multi-layer Metal Joints,” Department of Defence - Defence Science and Technology Organisation, Aeronautical Research Laboratory Melbourne, Victoria, Australia 1993
- Ozelton, Malcom W. Coyle, Timothy G. “Fatigue Life Improvement by Cold Working Fastener Holes in 7050 Aluminum,” Fatigue in Mechanically Fastened Composite and Metallic Joints Potter John M. American Society for Testing and Materials Philadelphia Pennsylvania 1986
- Pell, R. A. Beaver, R. W. Mann, J. Y. Sparrow, J. G. “Fatigue of Thick-Section Cold-Expanded Holes With and Without Cracks,” Fatigue and Fracture Engineering Materials and Structures 1989 12 6 553 567
- Weigel, Matthew Leon, Anthony “Greater Manufacturing Efficiency Through Automated Split-Mandrel Coldworking,” SAE Paper Number 965513 Presented at SAE World Aviation Congress and Exposition October 22 - 24 1996 Los Angeles, California Society of Automotive Engineers, Inc.
- Lam, Y.C. “A Comparative Study on the Effects of Interference Fit and Cold Expansion on the Fatigue Life of Cracked Holes,” Scripta Metallurgica et Materialla 1993 28 191 193
- Stack, C.P. Stephens, R.I. “Effect of Split Sleeve Cold Expansion on the Fatigue Resistance of Hot-rolled 1020 Steel,” International Journal of Fatigue 1989 11 327 334
- Leon, A. “Benefits of split mandrel coldworking,” International Journal of Fatigue 1996 20 1 1 8
- Leon, Anthony “Developments in Advanced Coldworking,” SAE Paper Number 98FAS13 Proceedings 1998 SAE Aerofast Conference September 15-17 1998 Long Beach California Society of Automotive Engineers, Inc.