Abstract: A dual specimen rotating bending fatigue test machine was developed and was operated successfully[1]. This newly developed fatigue testing machine was used to test the fatigue behaviour of Aluminium 7075 specimen. Two specimen of identical design were tested on the machine simultaneously. The results that were obtained, as expected, showed the fatigue strength reducing continuously with increasing stress for both the specimen. The results of both the specimen that were tested simultaneously produced similar results which proved that the equipment was operating well. In some cases the two specimen were loaded unequally even then the machine ran as expected without any glitch.

Keywords: Fatigue Testing Machine, Moore Test, Rotating Bending, Al 7075, Fatigue test specimen.