Search

Multi Point Incremental Forming (MPIF) of sheet metals, where industry can focus in the future, due to the massive opportunities available for automated invention of sheet metals. In this paper, the void analysis of AA5052 sheets were investigated, which was formed using Multi Point Incremental Forming (MPIF) process is represented. Scanning Electron Microscope (SEM) analysis was carried out on various surfaces existing during the MPIF process. The Forming Limit Diagram (FLD) was drawn and reported. The void analysis was carried out and determined. Energy Dispersive X-ray Spectroscopy (EDS) analysis was investigated to confirm the elemental composition of AA5052 sheets. [ABSTRACT FROM AUTHOR]

This study presents investigation of a cracked piece of a passenger aircraft fuselage frame made of aluminum alloy 7075-T6. Investigation method includes chemical analysis, hardness and tensile tests in order to determine mechanical properties of the alloy, metallography and microstructural analysis, scanning electron microscopy of the fracture surface and energy dispersive spectroscopy of the precipitates and corrosion debris at grain boundaries. Although from striations observed in SEM images of the fracture surface, it is found that fatigue is the main cracking reason but other evidences prove that precipitates and corrosion pits accelerated cracks nucleation. [ABSTRACT FROM AUTHOR]