Browse > Article
http://dx.doi.org/10.3795/KSME-A.2013.37.11.1407

Study on Accelerated Life Testing of Swing Reduction Gear Box for Hybrid Excavator  

Park, Jong Won (Reliability Assessment Center, Korea Institute of Machinery & Materials)
Choi, Byung Oh (Reliability Assessment Center, Korea Institute of Machinery & Materials)
Kim, Kyeong Keun (Doosan Institute of Technology)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.37, no.11, 2013 , pp. 1407-1413 More about this Journal
Abstract
The swing motion drive unit of a hybrid excavator is composed of an electrical motor instead of a hydraulic motor that is used in hydraulic excavators. The method to assess and guarantee the reliability of a hybrid excavator should consider combining the mechanical and the electrical failure mode effects. In particular, the swing reduction gear set of a hybrid excavator is operated under severe outdoor conditions; therefore, an accelerated life test, which is based on field operating condition, should be conducted for the newly developed reduction gear set. In this study, various qualitative methods for reliability engineering, such as FMMA, FMECA, FTA, and QFD, were used to develop the accelerated life test method for the swing drive reduction gear set for the hybrid excavator.
Keywords
Hybrid Excavator; Swing Reduction Gear Box; Failure Mode; Accelerated Life Test;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Park, J. W., Lee, K. W. and Kim, H. E., 2011, "Development of Reliability Test Method for Hybrid Excavator," KSME Spring Conference in Jeju, pp. 95-96.
2 Dimitri Kececioglu, Ph. D., P. E., 1993, Reliability and Life Testing handbook, Vol. 1, Prentice Hall PTR. New Jersey, pp. 1-104.
3 Tyrone, L. J., 2007, Handbook of Reliability Prediction Procedures for Mechanical Equipment, Naval Surface Warfare Center, West Bethesda, pp. 14-1-22-14.
4 Verhoeve, C. W. G. and Frumau, C. F. A., 1997, Reliability Testing of Ac-module Inverters, European Photovoltaic Solar Energy Conference.
5 Sawyer, E. and Kampen, T. V., 2008, Reliability Consideration Inverters/DC Link Capacitor Using PP Film and $105{^{\circ}C}$ Engine Coolant, IMAPS.
6 Li, Y., Billington, S., Zhang, C., Kurfess, T., Danyluk, S., and Liang, S., 1999, "Dynamic Prognostic Prediction of Defect Propagation on Rolling Element Bearings," Trans. Journal of Tribology, Vol. 42, No. 2, pp. 385-392.   DOI   ScienceOn
7 Jones, A. B., 1960, "A General Theory for Elastically Constrained Ball and Radial Roller Bearings Under Arbitrary Load and Speed Conditions," Trans. of ASME., 82, pp. 309-320.   DOI
8 Filetti, E. G. and Rumbarger, J. H., 1970, "A General Method for Predicting the Influence of Structural Support Upon Rolling Bearing Performance," Trans. of ASME., 921, pp. 121-128.