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[1, 2014] 

Journal of Electrical Engineering, Vol 65, 1 (2014) 30-36 DOI: 10.2478/jee-2014-0004

EVALUATION OF SPECTRAL AND PROSODIC FEATURES OF SPEECH AFFECTED BY ORTHODONTIC APPLIANCES USING THE GMM CLASSIFIER

Jiří Přibil – Anna Přibilová – Daniela Ďuračková

   The mechanical behavior and the thermal stability of an encapsulant based on ethylene-vinyl acetate (EVA) were studied. The EVA properties were verified at temperatures ranging from -70°C to 500°C. Thermogravimetry, differential scanning calorimetry and dynamic mechanical analysis were used in this study. It has been shown that the encapsulant has a good weight stability; however, the encapsulant passes through both a glass transition and a melting phase in the range of operating temperatures. The kinetic parameters of crosslinking were also analyzed. It is possible to achieve 65 % crosslinking at a temperature of 150°C and a time of 5 minutes. The activation energy of crosslinking is 95.6 kJ/mol.

Keywords: renewable energy resources, photovoltaic, EVA, encapsulant, glass transition, thermal analysis


[full-paper]


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