| Titanium (Ti) and its alloys are extensively used in the Aerospace industry due to its compatibility with composite materials, high tensile strength, lighter weight and corrosion resistance. But it is very hard to machine using conventional machining. Therefore solid state joining processes such as Friction Stir Welding (FSW) and Diffusion Bonding (DB) which produce near net shapes, significantly reducing the processing time with minimal wastage of material, have been developed. However there is a lot of possibility that these processes induce various defects, in the weld/bond zone, if they are properly not operated. Destructive testing proves to be very expensive to evaluate the quality of the bond. This motivates us to investigate the bond quality using Non Destructive Testing (NDT) techniques using Ultrasonic Testing. |
