caa a22 4500 465755542 CHVBK 20180323111846.0 cr unu---uuuuu 170327e19900501xx s 000 0 eng 10.1007/BF00500847 doi (NATIONALLICENCE)springer-10.1007/BF00500847 Effects of detector nonlinearity and specimen size on the apparent thermal diffusivity of NIST 8425 graphite [Elektronische Daten] [D. Hasselman, K. Donaldson] With the use of a graphite thermal conductivity standard it is demonstrated that optical detector non-linearity, coupled with excessive laser pulse energies, is primarily responsible for the anomalous specimen size dependence of the thermal diffusivity measured by the laser-pulse technique. High laser pulse energies also result in an anomalous positive temperature dependence for thin specimens near room temperature, in contrast to the expected negative temperature dependence. Using moderately thick specimens and attenuated laser pulses yields excellent agreement with thermal diffusivity calculated from standard thermal conductivity data. Plenum Publishing Corporation, 1990 detector nonlinearity nationallicence graphite nationallicence laser-flash method nationallicence standard materials nationallicence thermal diffusivity nationallicence Hasselman D. Thermophysical Research Laboratory, Department of Materials Engineering, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia, USA aut Donaldson K. Thermophysical Research Laboratory, Department of Materials Engineering, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia, USA aut International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/3(1990-05-01), 573-585 0195-928X 11:3<573 1990 11 10765 https://doi.org/10.1007/BF00500847 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00500847 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hasselman D. Thermophysical Research Laboratory, Department of Materials Engineering, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia, USA aut NATIONALLICENCE 700 1- Donaldson K. Thermophysical Research Laboratory, Department of Materials Engineering, Virginia Polytechnic Institute and State University, 24061, Blacksburg, Virginia, USA aut NATIONALLICENCE 773 0- International Journal of Thermophysics Kluwer Academic Publishers-Plenum Publishers 11/3(1990-05-01), 573-585 0195-928X 11:3<573 1990 11 10765 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer