Dynamic Thermal Contact Resistance Measurement Method Using Lock-in Thermography

Autor: Takuya Ishizaki, Taichi Igami, Ai Ueno, Hosei Nagano
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Proceedings, Vol 27, Iss 1, p 42 (2019)
Druh dokumentu: article
ISSN: 2504-3900
DOI: 10.3390/proceedings2019027042
Popis: This paper proposes a new thermal contact resistance measurement method using lock-in thermography. By the lock-in thermography with an infrared microscope, the dynamic temperature behavior across the contact interface was visualized in the sample side surface. Meanwhile, a new thermal contact resistance measurement principle was constructed by the superimposition of the temperature wave from virtual heat sources in consideration of the thermal contact resistance at the interface. Consequently, the thermal contact resistance was obtained as a fitting parameter by fitting the theoretical curve to the measured amplitude and phase lag. The validity of the principle was shown.
Databáze: Directory of Open Access Journals