13th International Conference on Fracture June 16–21, 2013, Beijing, China -6- Figure 7. Fracture alarm unit 4. CONCLUDING REMARKS Conventional fatigue tests take a long time more than 200days to reach N=109, and a number of fatigue test data are required as the fundamental data in the mechanical design. In order to solve such difficulties, the high performance fatigue testing machine in rotating bending “GIGA QUAD” has been developed in this work. Based on a lot of experimental results, the fundamental performance of this testing machine was confirmed. Actually these machines are already being used at many laboratories in universities and industries. Thus, conventional customers and new customers have informed that this testing machine is successfully used to obtain a number of fatigue data within a reasonable short period. 5. REFERENCES [1] Sakai T. Review and Prospects for Current Studies on Very High Cycle Fatigue of Metallic Materials for Machine Structural Use. Proc. of VHCF-4, Ann Arbor, MI, USA, (2007), 3-12. [2] Bathias, C., P. C. Paris. Gigacycle Fatigue in Mechanical Practice, Marcel Dekker, 2005. [3] Sakai T., Ochi Y., Jones J. W. Special Issue on the Third International Conference on Very High Cycle Fatigue held in Kyoto/Kusatsu, Japan on 16-19 September, 2004, International Journal of Fatigue, 2006; 28: 1437. [4] T. Sakai, Review and Prospects for Current Studies on Very High Cycle Fatigue of Metallic Materials for Machine Structural Use, Journal of Solid Mechanics and Materials Engineering, Vol.3, No.3, (2009), 425-439.
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