01815nab a2200253 i 4500 BPP KOSZ 005 20191005125034.0 151112s1997 pl n f |000 0eng KOSZ 005 KOSZ 005/HR eng POL 621.38 SUSZYŃSKI, Zbigniew. 1996 - . Politechnika Koszalińska - Wydział Elektroniki, Katedra Elektroniki Ciała Stałego Photoacoustic measurements of the thermal diffusivity of solids in the presence of a drum effect / Zbigniew Suszyński, Mirosław Maliński, Leszek Bychto. 1997. The photoacoustic measurements of the thermal diffusivity of the thick plates of metals are discussed when the drum effect is not quenched. The dominant machanism responsible for the photoacoustic signal was determined. Depending on the configuration arrangement, the ratio of the thermal signal to the thermoelastic bending one was determined. The thermal diffusivity was obtainted from both the frequency dependence of the rear amplitude and rear phase characteristics. The influence of the thermoelastic bending on both rear and front frequency characteristics is discused. The way of calculation of the thermal diffusivity in the case of the results showing strong thermoelastic bending effect is discussed. Przewodnictwo cieplne. Termodynamika techniczna. BYCHTO, Leszek. 1996 - . Politechnika Koszalińska - Wydział Elektroniki, Katedra Elektroniki Ciała Stałego W : Archives of Acoustics. - 1997, Vol. 22, nr 3, s. 343-349 Maliński, Mirosław Autor 1996 - . Politechnika Koszalińska - Wydział Elektroniki, Katedra Elektroniki Ciała Stałego ART UKD 298 298 0 0 0 0 BPK BPK 0190 ART