Fig. 1 Friction welding machine
Fig. 2 Schematic diagram of AE technique
Fig. 3 Relationship between tensile strength and pressure of as-welded specimens
Fig. 4 Relationship between metal loss and heating time of as-welded specimens
Fig. 5 Relationship between strength and heating time in the as-welded specimens
Fig. 7 Typical waveforms at the heating and the upsetting times
Fig. 6 Relationship between ductility and heating time in the as-welded specimens
Fig. 8 Cumulative count according to heating times
Fig. 9 Amplitude according to heating times
Fig. 10 ABS energy according to heating times
Table 1. Mechanical properties of materials
Table 2. Friction welding conditions and dimension of specimen
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