scholarly journals Measurement of local thermal contact resistance with a periodic heating method using microscale lock-in thermography

2020 ◽  
Vol 91 (6) ◽  
pp. 064901
Author(s):  
Takuya Ishizaki ◽  
Taichi Igami ◽  
Hosei Nagano
Keyword(s):  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Periodic Heating ◽  
Heating Method ◽  
Lock In

scholarly journals Dynamic Thermal Contact Resistance Measurement Method Using Lock-in Thermography

Proceedings ◽  
2019 ◽  
Vol 27 (1) ◽  
pp. 42 ◽  
Author(s):  
Ishizaki ◽  
Igami ◽  
Ueno ◽  
Nagano
Keyword(s):  
Contact Resistance ◽  
Measurement Method ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Side Surface ◽  
Resistance Measurement ◽  
Phase Lag ◽  
Infrared Microscope ◽  
Measurement Principle ◽  
Lock In

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.

scholarly journals Measurement of Line Distribution of Thermal Contact Resistance Using Microscopic Lock-In Thermography

2021 ◽  
Vol 8 (1) ◽  
pp. 18
Author(s):  
Takuya Ishizaki ◽  
Ai Ueno ◽  
Hosei Nagano
Keyword(s):  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Resistance Measurement ◽  
Phase Lag ◽  
Contact Interface ◽  
Geometrical Condition ◽  
Infrared Microscope ◽  
The One ◽  
Lock In

This paper proposes a new thermal contact resistance measurement method using lock-in thermography. Using the lock-in thermography with an infrared microscope, the local temperature behavior in the frequency domain across the contact interface was visualized in microscale. Additionally, a new thermal contact resistance measurement principle was constructed considering the superimposition of the reflected and transmitted temperature wave at the boundary and taking into account the intensity distribution of the heating laser as the gaussian distribution, and the specific geometrical condition of the laminated plate sample. As a result of the experiments, the one-dimensional distribution of the thermal contact resistance was obtained along the contact interface from the analysis of the phase lag.

THERMAL CONTACT RESISTANCE MATCHING TO OPTIMIZE PERFORMANCE IN THERMOELECTRIC GENERATORS

2020 ◽  
Vol 27 (7) ◽  
pp. 617-627
Author(s):  
Yuanyuan Tian ◽  
Mengjun Zhang ◽  
Junli Wang ◽  
Anbang Liu ◽  
Huaqing Xie ◽  
...  
Keyword(s):  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Thermoelectric Generators

High‐Temperature Skin Softening Materials Overcoming the Trade‐Off between Thermal Conductivity and Thermal Contact Resistance

Small ◽  
2021 ◽  
pp. 2102128
Author(s):  
Taehun Kim ◽  
Seongkyun Kim ◽  
Eungchul Kim ◽  
Taesung Kim ◽  
Jungwan Cho ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
High Temperature ◽  
Contact Resistance ◽  
Thermal Contact Resistance ◽  
Thermal Contact ◽  
Trade Off
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