Brief investigation of induced drilling stresses in the center-hole method of residual-stress measurement
- 319 Downloads
Results of experiments to measure induced drilling stresses in the center-hole method of residual-stress measurement are described. Five specimens of different metals were specially prepared in an attempt to relieve malerial residual stress. Surface-residual-stress measurements were then performed by the center-hole method with a conventionally used (low-speed) end mill and an ultra-high-speed drill. For each specimen, the relieved strains due to the hole drilling were significantly higher for the low-speed end mill than for the ultra-high-speed drill. Preliminary conclusions are that the ultra-high-speed drill would be much superior to the conventional low-speed end mill in the measurement of residual stress by the center-hole method.
KeywordsMechanical Engineer Residual Stress Drilling Fluid Dynamics Hole Drilling
Unable to display preview. Download preview PDF.
- 1.Mathar, J., “Determination of Initial Stresses by Measuring the Deformation Around Drilled Holes,” Trans. ASME,56 (1934).Google Scholar
- 2.Rendler, N.J. and Vigness, I., “Hole-drilling strain-gage Method of Measuring Residual Stresses,” Paper presented at the Annual Meeting of SESA at Detroit, MI (May 1966).Google Scholar
- 3.Bush, A.J. and Kromer, F.J., “Simplification of the Hole-Drilling Method Residual Stress Measurement,” 27th Annual ISA Conference Paper, New York, NY (Oct, 9–12, 1973).Google Scholar
- 4.Beaney, E.M., “Accurate Measurement of Residual Stress on Any Steel Using the Center Hole Method,” CEGB Report RD/B/N3568 (Dec. 1975).Google Scholar
- 5.Vaughn, R.L. and Krueck, R.T., “Recent Developments in Ultra-High Speed Machining,” Tool Engineer (April 1960).Google Scholar
- 6.“Instruction Manual,” Model RS-200-01 Milling Guide, Micro-Measurements, Measurements Group, Vishay Intertechnology Inc., PO Box 27777, Raleigh, NC 27611.Google Scholar