caa a22 4500 465755429 CHVBK 20180323111845.0 cr unu---uuuuu 170327e19901101xx s 000 0 eng 10.1007/BF00500563 doi (NATIONALLICENCE)springer-10.1007/BF00500563 Effects of infrared detector nonlinearity on thermal diffusivity measurements using the flash method [Elektronische Daten] [J. Hoefler, R. Taylor] When using an infrared detector to measure temperature changes as in the case of the flash technique, the effects of detector nonlinearity can have drastic effects on the experimental data. In the flash technique, the detector nonlinearity tends to shift the calculated half-time to larger values, resulting in underpredicted values of thermal diffusivity especially in experiments performed at room temperature. In order to predict the error in the diffusivity calculation, the nonlinear relationship between the detector signal and the temperature change was developed into a Taylor series expansion used in the flash technique's mathematical model. The nonlinear detector model proves to yield accurate correction factors for the presently calculated values of diffusivity. In order to utilize the model, it is necessary to estimate the maximum temperature rise of the back surface and the degree of detector nonlinearity. Plenum Publishing Corporation, 1990 detector nonlinearity nationallicence flash technique nationallicence infrared detector nationallicence thermal diffusivity nationallicence Hoefler J. Thermophysical Properties Research Laboratory, Purdue University, 47906, West Lafayette, Indiana, USA aut Taylor R. Thermophysical Properties Research Laboratory, Purdue University, 47906, West Lafayette, Indiana, USA aut International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/6(1990-11-01), 1099-1110 0195-928X 11:6<1099 1990 11 10765 https://doi.org/10.1007/BF00500563 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00500563 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hoefler J. Thermophysical Properties Research Laboratory, Purdue University, 47906, West Lafayette, Indiana, USA aut NATIONALLICENCE 700 1- Taylor R. Thermophysical Properties Research Laboratory, Purdue University, 47906, West Lafayette, Indiana, USA aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/6(1990-11-01), 1099-1110 0195-928X 11:6<1099 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer