Optimization of ceramic thermal insulation behavior using the genetic algorithm

Optimization of ceramic thermal insulation behavior using the genetic algorithm

Amir Najah Saud Hasan Shker Majdi Safaa Najah Saud 

Dep. of Biomedical Engineering, Al-Mustaqbal University Collage, Babylon, Iraq

Faculty of Information Sciences and Engineering, Management & Science University, Shah Alam, Selangor, Malaysia

Corresponding Author Email: 
30 June 2018
| Citation



The modified alumina has been classified as one of the best thermal insulation materials that able to reduce the solar radiation and enhance the working environment and thus, reduce the energy consumption. This paper emphasis the effect of the multi-variables, such as yeast cell ratio, pressing load, sintering temperatures, and socking time on the lower thermal conductivity of the modified alumina. The ceramic thermal insulation was prepared by semi-dry pressing method using alumina with different amount of the bioactive yeast cell as a pore-forming agent and 3 wt.% sugar. The optimization process was carried out via a genetic algorithm for 61 samples according to the chromosome-based. The microstructure results revealed that there are two types of pores were observed; micro and meso size pores. Furthermore, it was also found by depending on the analyzed input data that the thermal conductivity of 2.5× 10-1 watt/m.oC was acquired at the optimal variables of 1200 oC, 19.4 %, 66 MPa, 1.5 hrs. as sintering temperature, yeast cell, pressing load, and socking time, respectively


thermal insulation, semi-dry pressing, alumina, genetic algorithm

1. Introduction
2. Experimental
3. Design of experimental
4. Results and discussion
5. The objective function and parameter of genetic
6. Conclusions

Amare Z. E., Bekalo T. B. (2017). Clay ceramic filter for water treatment. Materials Science and Applied Chemistry, Vol. 34, No. 1, pp. 69-74. http://dx.doi.org/10.1515/msac-2017-0011

Arunachalam U. P., Edwin M. (2017). Theoretical investigation of a ceramic monolith heat exchanger using silicon carbide and aluminium nitride as heat exchanger material. International Journal of Heat and Technology, Vol. 35, No. 1, pp. 645-650. http://dx.doi.org/10.18280/ijht.350323

Boumaza A., Djelloul A., Guerrab F. (2010). Specific signatures of α-alumina powders prepared by calcination of boehmite or gibbsite. Powder Technology, Vol. 201, No. 2, pp. 177-180. http://dx.doi.org/10.1016/j.powtec.2010.03.036

Dong X., Wang M., Guo A., Zhang Y., Ren S., Sui G., Du H. (2017). Synthesis and properties of porous alumina ceramics with inter-locked plate-like structure through the tert-butyl alcohol-based gel-casting method. Journal of Alloys and Compounds, Vol. 694, pp. 1045-1053. http://dx.doi.org/10.1016/j.jallcom.2016.10.153

Faoite D. D. B., David J., Stanton, K. T. (2013). Regression analysis of temperature-dependent mechanical and thermal properties of dielectric technical ceramics. Journal of Materials Science, Vol. 48, No. 1, pp. 451-461. http://dx.doi.org/10.1007/s10853-012-6759-6

Han M., Yin X., Cheng L., Ren S., Li Z. (2017). Effect of core-shell microspheres as pore-forming agent on the properties of porous alumina ceramics. Materials & Design, Vol. 113, pp. 384-390. http://dx.doi.org/10.1016/j.matdes.2016.10.043

Hirata Y., Fujita H., Shimonosono T. (2017). Compressive mechanical properties of partially sintered porous alumina of bimodal particle size system. Ceramics International, Vol. 43, No. 2, pp. 1895-1903. http://dx.doi.org/10.1016/j.ceramint.2016.10.149

Honda S., Hashimoto S., Yase S., Daiko Y., Iwamoto Y. (2016). Fabrication and thermal conductivity of highly porous alumina body from platelets with yeast fungi as a pore forming agent. Ceramics International, Vol. 42, No. 12, pp. 13882-13887. http://dx.doi.org/10.1016/j.ceramint.2016.05.196

Luo Y. (2015). Effect of yeast cell morphology, cell wall physical structure and chemical composition on patulin adsorption. PloS One, Vol. 10, No. 8, pp. e0136045. http://dx.doi.org/10.1371/journal.pone.0136045

Luyten J. S., Mullens J., Cooymans A. Wilde D. M., Thijs I., Kemps R. (2009). Different methods to synthesize ceramic foams. Journal of the European Ceramic Society, Vol. 29, No. 5, pp. 829-832. http://dx.doi.org/10.1016/j.jeurceramsoc.2008.07.039

Lyckfeldt O., Ferreira J. M. F. (1998). Processing of porous ceramics by ‘starch consolidation’. Journal of the European Ceramic Society, Vol. 18, No. 2, pp. 131-140. http://dx.doi.org/10.1016/S0955-2219(97)00101-5

Ma C., Chang Y., Ye W., Shang W., Wang C. (2008). Supercritical preparation of hexagonal γ-alumina nanosheets and its electrocatalytic properties. Colloid Interface Sci., Vol. 317, pp. 148-154. http://dx.doi.org/10.1016/j.jcis.2007.07.077

Mohammed A. Ahmed A. D., Shaker J. (2017). Hasanain Nadhim Abbas: Preparation of HA/β-TCP scaffold and mechanical strength optimization using a genetic algorithm method. Journal of the Australian Ceramic Societ. http://dx.doi.org/10.1007/s41779-016-0007-5

Nettleship I. (1996). Applications of porous ceramics. Key Engineering Materials, pp. 122-124, 305-324. https://doi.org/10.4028/www.scientific.net/KEM.122-124.305

Pickrell G. R. (2007). Porous ceramic, polymer and metal materials with pores created by biological fermentation. U.S. Patent, No. 7. http://dx.doi.org/10.1016/US7157115 B2

Tang Y. F., Miao Q., Qiu S., Zhao K., Hu L. (2014). Novel freeze-casting Fabrication of aligned lamellar porous alumina with a Centro symmetric structure. Journal of the European Ceramic Society, Vol. 34, No. 15, pp. 4077-4082. https://doi.org/10.1016/j.jeurceramsoc.2014.05.040

Xu G., Li J., Cui H., He Q., Zhang Z., Zhan X. (2015). Biotemplated fabrication of porous alumina ceramics with controllable pore size using bioactive yeast as pore-forming agent. Ceramics International, Vol. 41, No. 5, pp. 7042-7047. https://doi.org/10.1016/j.ceramint.2015.02.007

Zhang L., Du J. H., Gan G. Y., Yan J. K., Yi J. H. (2012). Preparation and characterization of porous alumina insulation materials by gel-foaming. In Advanced Materials Research, Vol. 412, pp. 207-210. http://dx.doi.org/10.4028/www.scientific.net/AMR.412.207