2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/16/2017 | 11:25 AM - 11:50 AM | Thermal property characterization of advanced carbon composite utilizing the 3 omega method | 3
Thermal property characterization of advanced carbon composite utilizing the 3 omega method
The three omega method has been used in the characterization material thermal conductivity and other thermal properties. An excitation current at 1 omega induces a temperature change due to Joule heating at 2 omega, which causes a change in electrical resistance at 3 omega, which can be measured using a lock-in amplifier. Both the amplitude and phase delay of this response can be used to extract thermal properties. In this work, a thin-film sample of an advanced carbon composite fabricated at the University of Utah is analyzed in a configuration analogous to a suspended wire. A strip of the rectangular cross-section sample is attached to isothermal copper blocks by a silver paste during in-air measurements at various excitation frequencies. The sample has known electrical thin film electrical resistance, with potential in a wide range of applications.
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Presenters/Authors
Kurt Harris
(), Utah State University, kuharris@gmail.com;
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Austin Fleming
(), Utah State University, austin.d.fleming@aggiemail.usu.edu;
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Heng Ban
(), Utah State University, heng.ban@usu.edu;
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