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Recommended Papers for: Heat Capacity

Total Papers Found: 24

Transient plane source measurements of the thermal properties of hydrating cement pastes

Since cracking in concrete is usually caused by thermal processes, relevant thermophysical properties such as heat capacity and thermal conductivity are important. This article details the measurement of thermal conductivity and heat capacity using the transient plane source method of two different (0.3 and 0.4) water-to-cement (w/c) ratio hydrated cement pastes. These thermophysical properties are measured during the initial application of the cement as well as over a period of 28 days. ...

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Infrared Imaging During Thermal Conductivity Measurements

The transient plane source sensors were used to measure thermal conductivity and other thermophysical properties of infrared transparent materials, while under infrared imaging. The infrared imaging provided evidence of temperature uniformity and symmetry, as well as temperature monitoring of the sensor and material being tested. The upgraded version of the original TPS system was used including a bridge circuit, a digital voltmeter, and a data analysis module...

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Heat capacity, thermal conductivity, and thermal expansion of barium titanate-based ceramics

Barium titanate-based ceramics are most commonly found in electronics as dielectric layers in multilayer ceramic capacitors. Two different forms of Barium titanate-based ceramics were analyzed in this article to determine heat capacities as a function of temperature. The thermal conductivities and thermal diffusivities of these two forms were also determined using the Hot Disk Transient Plane Source method. Inferences towards the performance and reliability of barium titanate-based ceramics under various ...

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Thermal Conductivity of Nitrogenated Ultrananocrystalline Diamond films on Silicon

Thermal conductivity testing was done on nitrogenated ultrananocrystalline diamond films on silicon. Temperature dependence on thermal conductivity was measured using these two techniques. A decrease in thermal conductivity was observed with the introduction of nitrogen addition. It was observed that MCD had the highest thermal conductivity followed by UNCD at 25% nitrogen and UNCD at 0% nitrogen....

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