This article is based on research that has been done to improve hydrogen storage systems with on-board reversible metal hydrides. The study involved the compaction of the sodium aluminum hydride particles, as well as the addition of either aluminum or expanded natural graphite (ENG) to the powders to determine how their addition affects the thermal conductivity. It was found that the compaction of the powders improved the volumetric capacity of ...
High-strength steel used in bolts was tested for its thermo-physical properties in order to determine how steel bolts would respond in a fire. It was determined that the thermal and mechanical properties of the steel were dependent on temperature, and that the thermal conductivity of the steel was also dependent on carbon content. The thermal conductivity of the three types of steel that were tested was found to be the ...
Microcellular (methylmethacrylate)-(butyl acrylate)-(Methylmethacrylate) triblock copolymer foams were prepared by a foaming process using CO2. CO2 was first dissolved into sheets of the polymer, and then the pressure was released over different time periods, from 2 to 30 minutes. The density, cellular structure, and thermal conductivity of these foams were then investigated. It was determined that the density decreased with increasing depressurization time; however, the density did not change ...
Two organic phase change materials (PCMs) were investigated to determine their effects on the thermal management capabilities of electronics. The thermo-physical properties of n-eicosane and 1-hexadecanol were determined experimentally, and the two PCMs were then added to unfinned, and finned heat sinks. It was determined that a PCM with a high melting point is able to increase the time of protection from overheating; however, it was also determined that if ...
The transient plane source (TPS) technique was used to determine the anisotropy of titanium aluminide bars with different microstructures. The thermal conductivity of the bars was measured at temperatures up to 700oC. It was determined that the anisotropy in the bars was approximately 15% at all temperatures....
