@article{chacko_amoafo-yeboah_cance_rabiei_2023, title={A computational and experimental approach to evaluate thermal conductivity and diffusivity of steel composite metal foam}, volume={9}, ISSN={["1588-2926"]}, url={https://doi.org/10.1007/s10973-023-12515-4}, DOI={10.1007/s10973-023-12515-4}, journal={JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY}, author={Chacko, Zubin and Amoafo-Yeboah, Nigel and Cance, John and Rabiei, Afsaneh}, year={2023}, month={Sep} }
 @article{amoafo-yeboah_rabiei_2023, title={Thermal Response of Steel-Steel Composite Metal Foams under Small-Scale Torch-Fire Conditions}, volume={6}, ISSN={["1527-2648"]}, url={https://doi.org/10.1002/adem.202300217}, DOI={10.1002/adem.202300217}, abstractNote={Steel–steel composite metal foam (S–S CMF) is a novel metal matrix composite material characterized by its high strength‐to‐weight ratio and unique mechanical and thermal properties. It is made up of hollow stainless‐steel spheres, embedded in stainless steel matrix, with 65–70% air in the structure making it effective as an insulating material. S–S CMF is being explored for use in tank cars carrying hazardous materials (HAZMATs) as a potential partial replacement for conventional carbon steel and thermal insulating material currently being used. In this study, S–S CMF material is numerically and experimentally evaluated for its thermal protection performance. Experimental studies are conducted in scaled‐down jet fire condition while numerical studies are conducted using fire dynamics simulator (FDS). Based on experimental and modeling results, as well as uncertainty studies, 13–15 mm thick S–S CMF ranging in density of about 2.5 g cc−1 tested as novel structural/insulating material meets the acceptance criterion for small‐scale simulated torch‐fire testing. Further success is anticipated in future full‐scale evaluation of 122 × 122 cm samples. The outstanding fire resistance and thermal protection of S–S CMF is attributed to the substantial volume of air trapped within the material, which correlates to its total density.}, journal={ADVANCED ENGINEERING MATERIALS}, author={Amoafo-Yeboah, Nigel and Rabiei, Afsaneh}, year={2023}, month={Jun} }
 @article{amoafo-yeboah_rabiei_2023, title={Thermal Response of Steel-Steel Composite Metal Foams under Small-Scale Torch-Fire Conditions}, volume={25}, ISSN={["1527-2648"]}, url={https://doi.org/10.1002/adem.202370064}, DOI={10.1002/adem.202370064}, abstractNote={The performance of novel steel composite metal foam (CMF) in a torch fire environment of 1200C is compared with that of the currently used solid steel of the same thickness as described in article number 2300217 by Afsaneh Rabiei and Nigel Amoafo-Yeboah. While solid steel is three times heavier, its temperature exceeds 730C in 30 minutes exposure but the steel CMF barely reaches 400C, providing a safer way for transportation of HAZMAT.}, number={19}, journal={ADVANCED ENGINEERING MATERIALS}, author={Amoafo-Yeboah, Nigel and Rabiei, Afsaneh}, year={2023}, month={Oct} }
 @article{akwaboa_zeng_amoafo-yeboah_ibekwe_mensah_2023, title={Thermophysical Properties of Laser Powder Bed Fused Ti-6Al-4V and AlSi10Mg Alloys Made with Varying Laser Parameters}, volume={16}, ISSN={["1996-1944"]}, DOI={10.3390/ma16144920}, abstractNote={This study investigated the influence of diverse laser processing parameters on the thermophysical properties of Ti-6Al-4V and AlSi10Mg alloys manufactured via laser powder bed fusion. During fabrication, the laser power (50 W, 75 W, 100 W) and laser scanning speed (0.2 m/s, 0.4 m/s, 0.6 m/s) were adjusted while keeping other processing parameters constant. Besides laser processing parameters, this study also explored the impact of test temperatures on the thermophysical properties of the alloys. It was found that the thermophysical properties of L-PBF Ti-6Al-4V alloy samples were sensitive to laser processing parameters, while L-PBF AlSi10Mg alloy showed less sensitivity. In general, for the L-PBF Ti-6Al-4V alloy, as the laser power increased and laser scan speed decreased, both thermal diffusivity and conductivity increased. Both L-PBF Ti-6Al-4V and L-PBF AlSi10Mg alloys demonstrated similar dependence on test temperatures, with thermal diffusivity and conductivity increasing as the test temperature rose. The CALPHAD software Thermo-Calc (2023b), applied in Scheil Solidification Mode, was utilized to calculate the quantity of solution atoms, thus enhancing our understanding of observed thermal conductivity variations. A detailed analysis revealed how variations in laser processing parameters and test temperatures significantly influence the alloy’s resulting density, specific heat, thermal diffusivity, and thermal conductivity. This research not only highlights the importance of processing parameters but also enriches comprehension of the mechanisms influencing these effects in the domain of laser powder bed fusion.}, number={14}, journal={MATERIALS}, author={Akwaboa, Stephen and Zeng, Congyuan and Amoafo-Yeboah, Nigel and Ibekwe, Samuel and Mensah, Patrick}, year={2023}, month={Jul} }
 @article{rabiei_amoafo-yeboah_huseboe_scemama_2022, title={A Study on Thermal Properties of Composite Metal Foams for Applications in Tank Cars Carrying Hazardous Materials}, ISBN={["978-3-030-92566-6"]}, ISSN={["2367-1696"]}, DOI={10.1007/978-3-030-92567-3_23}, abstractNote={Each year, millions of tons of hazardous materials are shipped through tank cars on railroads. Accidents involving these tank cars can create punctures that release these hazardous materials into the surrounding area, resulting in potential fire and even explosions, human fatalities, and substantial damage to the environment. Despite all enhancements to mitigate the consequences of such accidents, there is still an immediate need for novel material with superior puncture and fire resistance with lower weight than the current carbon-steel in use, to improve the safety and efficacy of tank cars carrying hazardous materials (HAZMAT). Composite metal foamComposite metal foam (CMF) is a novel class of light-weight material made of closely packed metallic hollow spheres with a surrounding metallic matrix. In this study, the latest developments on evaluating the performance of composite metal foamComposite metal foam against extreme heat through both experimental and analytical approaches will be reported and compared to those properties of the base bulk steel materials in use.}, journal={METAL-MATRIX COMPOSITES: ADVANCES IN PROCESSING, CHARACTERIZATION, PERFORMANCE AND ANALYSIS}, author={Rabiei, Afsaneh and Amoafo-Yeboah, Nigel and Huseboe, Evan and Scemama, Claire}, year={2022}, pages={367–379} }