Figure 9 Experimental result of screwed joint for plate 2.
Related Figures (13)
Figure |. Modal approach for CLF. was chosen for estimating CLFs of bolted and screwed junction of aluminium plates. CLFs for bolted and screwed joints of perpendicular aluminium plates were compared. Squaring equation (6) and averaging point a over the subsystem while keeping the load constant, gives The value of input conductance can be written in terms of mass and average frequency spacing. Using the relation between energy ratio, DLF and CLF, equation (8) can be re-written as Figure 3. Experimental arrangement. Figure 2. Experimental set up for plate. Figure 5. Coupling loss factor for line connected plates with different materials. Figure 4. Arrangement for instrumentation. Figure 7. Comparison of modal density for aluminium plate. Figure 6. DLF values of aluminium plate. The experimental set-up consisted of four channel FFT Analyzer, Accelerometers, Impact Hammer and Pulse software. For the evaluation of Damping Loss Factor, Half-Power Bandwidth method was used. Experiments were conducted for frequency range from 0 to 5000 Hz. Measurements were taken by varying positions of accelerometer and impact hammer. These values of damping loss factor were used for calculating coupling loss factors of line and point connected structures. Figure 8. Experimental result of screwed joint for plate |. Figure 12. Comparison of theoretical and experimental results for plates in same plane. Figure I1. Experimental result of bolted joint for plate 2. Figure 10. Experimental result of bolted joint for plate |. Figure 13. Comparison of experimental results for perpen- dicular plates.
