Estimation of Thermodynamic and Transport Properties …
243
Fig. 5 Standard deviations of k and C under X62B50T00 model (for ˜
t h = 0.55)
Fig. 6 Standard deviations of k and C under X42B50T00 model (for ˜
t h = 0.5)
6 Conclusions
The plane source experimental apparatus used for thermal properties estimation has
been modelled accounting for the heater heat capacity and a finite heating period but
only for metallic materials. Also, the thermal contact at the heater–sample interface
has been considered both perfect (X42B50T00 case) or imperfect (X62B50T00 case).
The optimal experiment for estimation of conductivity and heat capacity has been
designed using a D-optimum criterion. Then, the dimensionless standard deviations
of k and C have been computed. When an imperfect contact at the heater–specimen
interface is considered, the optimal experiment and heating durations are about 10%
longer than those obtained when the contact is perfect.
243
Fig. 5 Standard deviations of k and C under X62B50T00 model (for ˜
t h = 0.55)
Fig. 6 Standard deviations of k and C under X42B50T00 model (for ˜
t h = 0.5)
6 Conclusions
The plane source experimental apparatus used for thermal properties estimation has
been modelled accounting for the heater heat capacity and a finite heating period but
only for metallic materials. Also, the thermal contact at the heater–sample interface
has been considered both perfect (X42B50T00 case) or imperfect (X62B50T00 case).
The optimal experiment for estimation of conductivity and heat capacity has been
designed using a D-optimum criterion. Then, the dimensionless standard deviations
of k and C have been computed. When an imperfect contact at the heater–specimen
interface is considered, the optimal experiment and heating durations are about 10%
longer than those obtained when the contact is perfect.