Electrothermal static contact: inverse analysis and experimental approach

Figures & data

Figure 1. Thermal contact states vs. contact characteristics.

Figure 2. Scheme of measurement principle.

Table 1. Experimental data.

	ρe (Ω m)	λ (W m K^−1)	Cp (J kg K^−1)	ρ (kg m^−3)	(m^2 s^−1)	(W m^−^2K s^0.5)	Li (mm)	(°C)
Steel	10^−7	40	500	7300	1.1 × 10^−5	12,083	40	50
Copper	5 × 10^−8	320	381	8500	0.99 × 10^−4	32,192	40	20

Figure 3. S_R vs. time and R_TC.

Figure 4. S_R vs. time and φ_g.

Figure 5. S_R vs. time and α.

Figure 6. S_R vs. time and sensor location.

Figure 7. S_α vs. time and R_TC.

Figure 8. S_a vs. time and φ_g.

Figure 9. S_α vs. time and sensor location.

Figure 10. cc vs. t_w and ΔT.

Figure 11. t_opt and cc vs. R_TC and φ_g.

Figure 12. t_opt and cc vs. α and φ_g.

Figure 13. Imprecision domain of estimation for different values of signal/noise ratio bb.

Figure 14. Influence of the damping parameter on estimation.

Figure 15. Experimental device.

Figure 16. Temperature recordings.

Figure 17. Dispersion of measured temperatures.

Table 2. Estimations results.

Test	Estimated RTC (K m^2 W^−1)	Average value of RTC (K m^2 W^−1)	δRTC (K m^2 W^−1)	Estimated α	Average value of α	δα	Value of α according to the theoretical model 11	Residues (°C)
1	1.42 × 10^−4	1.41 × 10^−4	10^−6	0.41	0.40	0.02	0.39	0.0098
2	1.41 × 10^−4			0.42				0.011
3	1.40 × 10^−4			0.39				0.0076
4	1.43 × 10^−4			0.40				0.01104
5	1.41 × 10^−4			0.38				0.00724
6	1.39.10^−4			0.40				0.00109