DocumentCode
2361102
Title
Thermal wave methods: some experimental pitfalls
Author
WÜbbenhorst, M. ; van Turnhout, J.
Author_Institution
Dept. of Polymer Technol., Delft Univ. of Technol., Netherlands
fYear
1994
fDate
7-9 Sep 1994
Firstpage
182
Lastpage
187
Abstract
Uncertainties in the spatial distributions calculated from thermal wave data are normally attributed to the ill-posed deconvolution problem. This paper focusses on the impact of “ill-posed” experimental conditions on the pyroelectric spectra. The spectra are affected by structural inhomogeneities and temporal changes in the electrical and thermal properties, by distortions caused by the electric circuit, by frequency-dependent properties and by piezoelectricity. Experimental results are given for PVDF and LiTaO3. Suggestions are made to reduce the effect of experimental errors
Keywords
dielectric polarisation; electrets; lithium compounds; piezoelectric materials; polymers; pyroelectricity; thermally stimulated currents; LiTaO3; PVDF; frequency-dependent properties; ill-posed deconvolution problem; piezoelectricity; pyroelectric spectra; spatial distributions; structural inhomogeneities; temporal changes; Deconvolution; Dielectric losses; Frequency; Permittivity; Plastics; Polarization; Polymers; Pyroelectricity; Space charge; Spatial resolution;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrets, 1994. (ISE 8), 8th International Symposium on
Conference_Location
Paris
Print_ISBN
0-7803-1940-0
Type
conf
DOI
10.1109/ISE.1994.514765
Filename
514765
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