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A Study on the Effects of Feedrate and Shotpeening on the Fatigue Life of A17075-T6 Specimens  

Kim, Hyoung-Tae (서울산업대 에너지환경전문대학원)
Shin, Ki-Hoon (서울산업대 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.16, no.4, 2007 , pp. 64-70 More about this Journal
Abstract
This paper presents a study on the effects of feedrate and shotpeening on the fatigue life of A17075-T6 specimens. For this purpose, six groups of specimens, each of which consists of eight specimens, were first machined at six different feedrates(0.05, 0.10, 0.15, 0.20, 0.25, 0.30mm/rev). Half of eight specimens in each group were then peened and the others remained un-peened. Then, the fatigue life was measured by using 4-point rotatry bending machine. One observation was that the fast the feedrate was, the large the diameter of a specimen was. To make sure that the bending stress was the same in all cases, different loading conditions were thus applied to specimens based on their diameters. Next, comparison of fatigue life among twelve sets of specimens(six groups times two sets, peened and un-peened) was performed. Finally, based on machining cost analysis, a guideline for optimal feedrate was presented.
Keywords
Feedrate; Fatigue life; Shotpeenig;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Kim, T. H., Cheong, S. K. and Shin, Y. S., 2002, 'A Study on the Fatigue Characteristics of Al 7075-T6 by Shot Peening,' Trans. of the KSMTE, pp. 335-340
2 Nam, J. H., Kim, T. H. and Cheong, S. K., 2002, 'High Temperature Fatigue Characterisitics of Al 7075-T6 by Shot Peening,' Industry of technology symposium, pp. 424-428
3 Cheong, S. K. and Lee, S. H., 2001, The theory of shotpeening processing, Sehwa company
4 Kim, S. I. and Cho, J. W., 2005, 'Cutting Power Based Feedrate Optimization for High-Efficient Machin ing,' Trans. of KSME, Vol. 29A, No. 2, pp. 333-340
5 Gorczyca, 1987, Application of Metal Cutting Theory, Industrial Press, New York
6 Cheong, N. Y., Lee, G. S., Kim, J. K. and Han, M. G., 2004, Material test, Wonkwang, pp. 249-255
7 Kang, S. J. and Kim, J. K., 2004, 'Characteristics Evaluation of Surface Roughness with Ultra Precision Maching,' Trans. of KSMTE, Vol. 13, No. 1, pp. 9-15
8 Degarno, E. P., Balck, J. T. and Kohser R. A., 2003, Materials and Process in Manufacturing, John Wiley & Suns
9 Choi, J. B. and Choi, H. O., 1998, 'A Study on the Fatigue Life Prediction of Al 7075-T6 alloy,' Trans. of the KSME, A, pp. 230-235
10 Jun, J. U., Chung, J. S., Shin, K. D., Koo, Y. and Ha, M. K., 2000, 'Study of Surface Roughness by Cutting Angle at Turning of Non-iron Metal,' Trans. of KSMTE, pp. 236-241