This study aimed to determine the effect of instrument temperature cooling time on the accuracy of thermal conductivity measurements. Multiple samples, with varying thermal conductivities, were measured using the Thermal Constants Analyzer, and with five different cooling times. Cooling times, and their effect on the thermal conductivity results were analyzed, and appropriate cooling times were suggested, based on the findings....
Author(s): Craig Dixon
Presently, society has become infatuated with limiting their carbon-foot print. As this progresses, scientists must find alternative means for manufactured composites: natural composites. One way this has been put forth is the addition of betel nut husk (BNH) as a reinforcing material in vinyl ester (VE) matrices (polymer composites). Thermophysical tests were conducted, using a TPS sensor, to determine the thermal properties of the composites. Mechanical and thermal degradation tests ...
Author(s): E. S. Zainudin, L. Yusriah, M. Jawaid, M. Mariatti, S. M. Sapuan
This work introduces a specifically designed sensor to measure the thermal conductivity of thin, insulating materials. This sensor, referred to as the hot square sensor, is unlike the standard sensors, in the sense that it is square in nature, and does not have two, thin layers of Kapton insulation on either side of the thin, metal heating spiral. The lack of Kapton allows a good thermal contact between the sample ...
Author(s):
This paper discusses thermal conductivity measurements on homogenous and non-homogenous materials, using three transient methods: Laser Flash Method (LFM), Modified Hot Wire (MHW), and the Transient Plane Source (TPS). This article also compares the non-destructive nature of the MHW, and the TPS methods, to the destructive nature of the LFM. Research conducted on homogenous materials produced comparable results using all three transient methods. However, when testing non-homogenous materials, such as ...
Author(s): Nancy Mathis
An organic phase change material (PCM), tetradecanol (TD), infused with copper nanowires (CuNWs), was sent through a slurry of tests, to determine the effect of the ultra-high aspect ratio and sponge nature of the CuNWs, on the PCM. Experimental testing alluded to the increased thermal conductivity of the PCM, with the addition of the CuNWs. The addition of CuNWs, enhanced the thermal conductivity of the PCM by nearly 9 times. A ...
Author(s): Fu-Rong Zhua, Guang-Rong Denga, Ju-Lan Zenga, Li-Xian Suna, Ling Zhang, Ling Zhua, Sai-Bo Yub, Wen-Pei Yana, Zhong Caoa
