Fig. 1. Structure of the array measuring system

Fig. 2. Finite element models and the first two order modes of systems

Fig. 3. Test system

Fig. 4. Sensors location distribution

Fig. 5. Frequency response function of the system

Fig. 6. Diagram of tooling placement

Fig. 7. Layout of the load points for the calibration process

Fig. 8. Comparison of measured forces with input forces under position 2-7-2

Fig. 9. Flowchart of measuring strategy